Prof. Ibrahim Abdulhalim Profile

Prof. Ibrahim Abdulhalim

Professor at Ben-Gurion Univ of the Negev

SPIE Involvement:

Conference Chair | Author | Editor

Publications (64)

SPIE Journal Paper | 10 October 2024

Smart window based on integration of nanoporous microparticles in liquid crystal composite with metamaterial nanostructured VO₂ film

Sofiia Barinova, Saranya Bhupathi, Peter Kazansky, Yi Long, Ibrahim Abdulhalim

JPE, Vol. 14, Issue 04, 048001, (October 2024) https://doi.org/10.1117/12.10.1117/1.JPE.14.048001

KEYWORDS: Windows, Liquid crystals, Visibility, Visible radiation, Infrared radiation, Light scattering, Reflection, Scattering, Temperature control, Composites

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Proceedings Article | 24 June 2024 Presentation + Paper

Smart window based on integration of nanoporous microparticles in liquid crystal composite with metamaterial nanostructured VO2 film

Sofiia Barinova, Saranya Bhupathi, Peter Kazansky, Yi Long, Ibrahim Abdulhalim

Proceedings Volume 13016, 1301604 (2024) https://doi.org/10.1117/12.3016958

KEYWORDS: Windows, Liquid crystals, Infrared radiation, Visible radiation, Visibility, Reflection, Light scattering, Composites, Scattering, Vanadium

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Proceedings Article | 24 June 2024 Poster + Paper

Smart window with reduced operating voltage and frequency by combining NMP-LC and EHDI scattering effects

Niveen Huseen, Zaher M. Judeh, Ibrahim Abdulhalim

Proceedings Volume 13016, 130160N (2024) https://doi.org/10.1117/12.3017080

KEYWORDS: Cochlea, Scattering, Liquid crystals, Windows, Particles, Dielectrics, Air contamination, Opacity, Refractive index, Near infrared

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Proceedings Article | 20 June 2024 Presentation

3D periodic metal nanostructure for multimodal sensing with application for explosives detection using SERS

Ibrahim Abdulhalim, Anand Shrivastav, Mohammad Abutoama

Proceedings Volume 12999, 129991K (2024) https://doi.org/10.1117/12.3023830

KEYWORDS: Gold, Explosives detection, Optical gratings, Nanostructures, Metals, Polarization, Optical design, Electric fields, Polarization gratings, Electromagnetism

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Proceedings Article | 18 June 2024 Poster + Paper

Faster narrowband multi-spectral liquid crystal-based imaging modules tailored to the specific application

Doron Pasha, Majd Abu Aisheh, Marwan Abuleil, Ibrahim Abdulhalim

Proceedings Volume 13016, 130160Q (2024) https://doi.org/10.1117/12.3022206

KEYWORDS: Tunable filters, Imaging systems, Optical filters, Liquid crystals, Reflection, Optical filtering, Imaging spectroscopy, Absorption, Spectroscopy, Multispectral imaging

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Proceedings Article | 18 June 2024 Presentation + Paper

Deep gratings filled with liquid crystal as tunable photonic metamaterial

Majd Abu Aisheh, Amaljith Kalliyadan, Mohammad Abutoama, Marwan Abuleil, Ibrahim Abdulhalim

Proceedings Volume 13016, 1301602 (2024) https://doi.org/10.1117/12.3022150

KEYWORDS: Liquid crystals, Polarization, Optical gratings, Electrooptics, Molecules, Refractive index, Design, Photonic metamaterials, Fabrication, Polarization gratings

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Proceedings Article | 18 June 2024 Presentation

Tunable liquid crystal Fabry-Perot as a spectral modulator for computational spectral imaging

Doron Pasha, Majd Abu Aisheh, Issac August, Ibrahim Abdulhalim

Proceedings Volume PC13016, PC1301606 (2024) https://doi.org/10.1117/12.3016924

KEYWORDS: Modulators, Liquid crystals, Modulation, Fabry Perot interferometers, Imaging spectroscopy, Wave plates, Imaging systems, Algorithm development, Tunable filters, Sensing systems

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Proceedings Article | 6 June 2024 Poster

Metamaterial devices for tunability and energy management in the SWIR region.

Amaljith C. K., Ibrahim Abdulhalim

Proceedings Volume PC12990, PC129901U (2024) https://doi.org/10.1117/12.3022038

KEYWORDS: Short wave infrared radiation, Lithium, Tunable metamaterials, Absorption, Tungsten, Metals, Solar energy, Design, Visible radiation, Sustainability

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SPIE Journal Paper | 9 September 2023 Open Access

Compressive hyperspectral microscopy for cancer detection

Yaniv Oiknine, Marwan Abuleil, Eugene Brozgol, Isaac August, Iris Barshack, Ibrahim Abdulhalim, Yuval Garini, Adrian Stern

JBO, Vol. 28, Issue 09, 096502, (September 2023) https://doi.org/10.1117/12.10.1117/1.JBO.28.9.096502

KEYWORDS: Microscopes, Microscopy, Light sources and illumination, Cancer detection, Imaging spectroscopy, Imaging systems, Biopsy, Optical filters, Tunable filters, Medical image reconstruction

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SignificanceHyperspectral microscopy grants the ability to characterize unique properties of tissues based on their spectral fingerprint. The ability to label and measure multiple molecular probes simultaneously provides pathologists and oncologists with a powerful tool to enhance accurate diagnostic and prognostic decisions. As the pathological workload grows, having an objective tool that provides companion diagnostics is of immense importance. Therefore, fast whole-slide spectral imaging systems are of immense importance for automated cancer prognostics that meet current and future needs.AimWe aim to develop a fast and accurate hyperspectral microscopy system that can be easily integrated with existing microscopes and provide flexibility for optimizing measurement time versus spectral resolution.ApproachThe method employs compressive sensing (CS) and a spectrally encoded illumination device integrated into the illumination path of a standard microscope. The spectral encoding is obtained using a compact liquid crystal cell that is operated in a fast mode. It provides time-efficient measurements of the spectral information, is modular and versatile, and can also be used for other applications that require rapid acquisition of hyperspectral images.ResultsWe demonstrated the acquisition of breast cancer biopsies hyperspectral data of the whole camera area within ∼1 s. This means that a typical 1 × 1 cm2 biopsy can be measured in ∼10 min. The hyperspectral images with 250 spectral bands are reconstructed from 47 spectrally encoded images in the spectral range of 450 to 700 nm.ConclusionsCS hyperspectral microscopy was successfully demonstrated on a common lab microscope for measuring biopsies stained with the most common stains, such as hematoxylin and eosin. The high spectral resolution demonstrated here in a rather short time indicates the ability to use it further for coping with the highly demanding needs of pathological diagnostics, both for cancer diagnostics and prognostics.

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Proceedings Article | 20 August 2020 Presentation

Optically addressed spatial light modulators for photonic neural network implementations

Vladimir Semenov, Xavier Porte, Maxime Jacquot, Laurent Larger, Ibrahim Abdulhalim, Daniel Brunner

Proceedings Volume 11469, 1146905 (2020) https://doi.org/10.1117/12.2570607

KEYWORDS: Neural networks, Optically addressed spatial light modulators, Analog electronics, Energy efficiency, Photonics systems, Data processing, Quantum electronics, Control systems, Wave plates, Mathematical modeling

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SPIE Journal Paper | 12 May 2020

Porous lead sulphide nanowalls structured film for ethanol detection in the short infrared regime

Ashok Chaudhary, Ravi Shukla, Matvey Klebanov, Ibrahim Abdulhalim

JNP, Vol. 14, Issue 02, 026012, (May 2020) https://doi.org/10.1117/12.10.1117/1.JNP.14.026012

KEYWORDS: Lead, Bioalcohols, Sensors, Water, Short wave infrared radiation, Infrared radiation, Dielectrics, Molecules, Infrared sensors, Infrared detectors

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Proceedings Article | 18 October 2019 Presentation

Ellipso-polarimetric multispectral camera based on improved achromatic liquid crystal waveplate and LCTF: concept and applications (Conference Presentation)

Marwan Abu Leil, Ibrahim Abdulhalim

Proceedings Volume 11166, 1116606 (2019) https://doi.org/10.1117/12.2533131

KEYWORDS: Wave plates, Liquid crystals, Cameras, Imaging systems, Polarimetry, Remote sensing, Electro optics, Nanotechnology, Polarization control, Imaging devices

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Polarimetric and Multi-spectro-polarimetric imaging systems have a high potential for different applications such as biomedical, surface evaluation and roughness, remote sensing and imaging through turbid mediums. The liquid crystal variable retarders (LCVRs) are propitious candidates to combine a polarization control devices in polarimetric imaging systems due to their exceptional properties such as retardation tunability using low voltages and minimal power consumption, in addition to being cost-effective and compact. In this work, we present a new broadband ellipso-polarimetric camera[1] based on tunable achromatic waveplate (AWP)[2,3] consisting of LCVRs. This AWP can be tuned between three modes: quarter, half and full waveplate in wide spectral band. Also, the operation band can be tuned with the three modes. By capturing images at the three modes of the AWP, the system can extract various EP parameters: two Stokes parameters (S1 and S3), sin(2ψ) and cos(Δ). Particularly we show that cos(Δ) images are superior over many known polarimetric imaging quantities. The performance of the imaging system was demonstrated in different applications such as tissue for biomedical imaging, fingerprints and its residuals on the surface, old coins and remote sensing. In addition to the spatial and polarimetric information, integrating a narrowband LC tunable filter[4] into imaging systems provides the ability to extract the spectral information which helps to characterize the object better. In this work, we shall present the performance of Multispectral camera and Multi-spectro-polarimetric camera based on our developed LC devices for different applications. References: 1. M. J. Abuleil and I. Abdulhalim, "Broadband ellipso-polarimetric camera utilizing tunable liquid crystal achromatic waveplate with improved field of view," Opt. Express (2019), accepted. 2. I. Abdulhalim and M. J. Abuleil, "Tunable achromatic liquid crystal waveplates," U.S. patent 10,146,095 B2. 3. M. J. Abuleil and I. Abdulhalim, "Tunable achromatic liquid crystal waveplates," Opt. Lett. 39(19), 5487 (2014). 4. M. Abuleil and I. Abdulhalim, "Narrowband multispectral liquid crystal tunable filter," Opt. Lett. 41(9), 1957 (2016).

Proceedings Article | 26 February 2019 Paper

Ellipso-polarimetric schemes for improved surface plasmon resonance detection

Ibrahim Watad, Ibrahim Abdulhalim

Proceedings Volume 10912, 109120T (2019) https://doi.org/10.1117/12.2504380

KEYWORDS: Liquid crystals, Polarization, Reflectivity, Metals, Prisms, Polarimetry, Surface plasmons, Wave plates, Polarizers, Glasses

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Proceedings Article | 17 September 2018 Presentation

Parallel spectroscopic ellipsometry system for fast correction of surface variability in metrology-based systems (Conference Presentation)

Andrey Nazarov, Michael Ney, Ibrahim Abdulhalim

Proceedings Volume 10746, 107460D (2018) https://doi.org/10.1117/12.2320183

KEYWORDS: Spectroscopic ellipsometry, Metrology, Interferometry, Data acquisition, Reliability, Multilayers, Polarizers, Statistical analysis, Error analysis, Spectroscopy

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Proceedings Article | 24 May 2018 Presentation

Parallel phase shift microscopy, vibrometry and focus tracking systems (Conference Presentation)

Ibrahim Abdulhalim, Michael Ney, Amir Aizen, Andrey Nazarov, Avner Safrani

Proceedings Volume 10678, 106780P (2018) https://doi.org/10.1117/12.2316478

KEYWORDS: Phase shifts, Interferometry, Vibrometry, Microscopy, Phase interferometry, Stereoscopy, Image resolution, Detector development, Sensors, Phase imaging

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Parallel phase shift interferometric detection systems were developed using polarized interferometry, three detectors and multiple wavelengths. In phase shift interferometry (PSI) several phase shifted interference images are usually acquired in a sequence and are algebraically combined to extract the phase information. However, phase imaging is limited both by the 2π phase modulo limiting the ability to map structures with heights only up to half the source's wavelength i.e. several hundreds of nm, and also by error induced by the movements of the sample between the acquisitions of phase shifted interference images. Several approaches for dealing with these limitations have been developed that provided only a limited solution, e.g. using a beat wavelength interferogram by a two wavelength illumination but that is more sensitive to phase noise and thus less accurate and parallel PSI in which all phase shifted images are acquired simultaneously but that does not resolve the height limitation. We have developed a combined and improved technique for parallel PSI and three wavelength illumination enabling overcoming both limitations without elevating phase noise sensitivity. Several bench prototypes were built: some allowing video rate 3D imaging of moving samples such as biological live samples or high throughput scanning of metrology samples with nm scale resolution, and others allowing single point very high speed axial motion tracking and vibrometry with sub-nm scale resolution and max step height of few tens of µm. Selected References: 1. Michael Ney, Avner Safrani, Ibrahim Abdulhalim, Instantaneous high-resolution focus tracking and a vibrometery system using parallel phase shift interferometry, J. Opt. A (Letters) 18, 09LT05 (5pp) (2016). 2. Michael Ney, Avner Safrani, Ibrahim Abdulhalim, Three wavelengths parallel phase-shift interferometry for real-time focus tracking and vibration measurement, Optics Letter 42, 719-22 (2017). 3. Avner Safrani and Ibrahim Abdulhalim, High speed 3D imaging using two wavelengths parallel phase shift interferometry, Optics Letters 40, 4651-4 (2015). 4. Avner Safrani and Ibrahim Abdulhalim, Full field parallel interferometry coherence probe microscope for high speed optical metrology, Appl. Opt. 54, 5083-87 (2015). 5. Avner Safrani and I. Abdulhalim, Real Time, Phase Shift, Interference Microscopy, Optics Letters 39, 5220-23 (2014).

Proceedings Article | 25 September 2017 Presentation

Combining three wavelength illumination and parallel phase shift interferometry for high-speed high-resolution and real-time motion tracking and 3D imaging (Conference Presentation)

Michael Ney, Ibrahim Abdulhalim

Proceedings Volume 10376, 103760M (2017) https://doi.org/10.1117/12.2273424

KEYWORDS: Phase shifts, Image resolution, Interferometry, Stereoscopy, Vibrometry, 3D image processing, 3D metrology, Microscopy, Profiling, Computer programming

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Proceedings Article | 19 September 2017 Open Access

Ultrahigh field enhancements from nanostructured metal thin films (Conference Presentation)

Ibrahim Abdulhalim

Proceedings Volume 10356, 1035602 (2017) https://doi.org/10.1117/12.2272143

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Enhancing the optical fields near metal nanostructures is of high importance for sensing, energy harvesting and improving the efficiency of optoelectronic devices. Surface enhanced spectroscopies such as Raman scattering (SERS), fluorescence (SEF) and infrared absorption (SEIRA) are enhanced significantly thus allowing lower detection limit and suprresolved imaging. Solar energy harvesting can be improved by designing structures that enhance the local optical field over wide spectral and angular ranges covering the whole solar spectrum. Detectors for the short wave and mid-IR ranges with higher efficiencies started to appear following an optimum designs incorporating plasmonic nanostructures. During the last few years we have been investigating several plasmonic nanostructured thin films for improved biosensors and lately for energy harvesting devices using variety of configurations: standard Kretchmann-Raether configuration, grating coupling, free space excitation of localized plasmons (LSPs) from nanosculptured thin films, and lately excitation of LSPs via extended surface plasmons (ESPs). The later configuration was shown both theoretically and experimentally (using SEF and SERS) to reveal extraordinary enhancement when the matching conditions between the ESP and the LSP are met. Several configurations for improved SPR biosensors and ultrahigh enhancement of local optical fields will be presented with the potential applications in sensing, solar energy harvesting and optoelectronic devices. Acknowledgments: This research was conducted partially by NTU-HUJ-BGU Nanomaterials for Energy and Water Management Programme under the Campus for Research Excellence and Technological Enterprise (CREATE), that is supported by the National Research Foundation, Prime Minister’s Office, Singapore. References 1. Atef Shalabney, C. Khare, Jens Bauer, B. Rauschenbach, and I. Abdulhalim, J. Nanophoton. 6 (1), 061605 (2012). 2. Alina Karabchevsky, Chinmay Khare, Bernd Rauschenbach, and I. Abdulhalim, J. NanoPhotonics 6, 061508-1, 12pp (2012). 3. I. Abdulhalim, Small 10, 3499-3514 (2014). 4. S.K. Srivastava, A. Shalabney, I. Khalaila, C. Grüner, B. Rauschenbach, and I. Abdulhalim, Small 10, 3579-3587 (2014). 5. Sachin K. Srivastava, H. Ben Hamo, A. Kushmaro, R. S. Marks, C. Gruner, B. Rauschenbach and I. Abdulhalim, Analyst, 140, 3201-3209 (2015). 6. Sachin K. Srivastava, C. Grüner, D. Hirsch, B. Rauschenbach, and I. Abdulhalim, Opt. Exp., Accepted (2017). 7. Anran Li, Sivan Isaacs, Ibrahim Abdulhalim, Shuzhou Li, J. Phys. Chem. C 119, 19382-9 (2015). 8. Anran Li, Sachin Srivastava, Ibrahim Abdulhalim, Shuzhou Li, Nanoscale 8, 15658-664 (2016). 9. Sachin K. Srivastava, Anran Li, Shuzhou Li, Ibrahim Abdulhalim, J. Phys. Chem. C 120, 28735-42 (2016).

Proceedings Article | 25 August 2017 Presentation + Paper

Dielectric permittivity imaging based on a liquid crystal capacitive sensor

Amir Aizen, Ibrahim Abdulhalim

Proceedings Volume 10361, 103610U (2017) https://doi.org/10.1117/12.2273339

KEYWORDS: Liquid crystals, Sensors, Sensing systems, Imaging systems, Imaging devices, Capacitors, Electro optics

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SPIE Journal Paper | 5 April 2017 Open Access

Assessment of intraocular pressure sensing using an implanted reflective flexible membrane

Andrey Nazarov, Boris Knyazer, Tova Lifshitz, Mark Schvartzman, Ibrahim Abdulhalim

JBO, Vol. 22, Issue 04, 047001, (April 2017) https://doi.org/10.1117/12.10.1117/1.JBO.22.4.047001

KEYWORDS: Mercury, Reflectivity, Distance measurement, Wavefront sensors, Wavefronts, Zernike polynomials, Cornea, Monochromatic aberrations, Eye, Gold

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Proceedings Article | 2 November 2016 Presentation

Stokes polarimetry, narrowband filtering, and hyperspectral imaging using a small number of liquid crystal devices (Conference Presentation)

Marwan Abuleil, Isaac August, Yaniv Oiknine, Adrian Stern, Ibrahim Abdulhalim

Proceedings Volume 9940, 99400S (2016) https://doi.org/10.1117/12.2237295

KEYWORDS: Liquid crystals, Tunable filters, Imaging systems, Polarimetry, Hyperspectral imaging, LCDs, Polarization, Wave plates, Tissue optics, Image filtering

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Proceedings Article | 28 August 2016 Paper

Real time parallel phase shift orthogonal polarization interference microscopy

I. Abdulhalim, A. Safrani

Proceedings Volume 9960, 996002 (2016) https://doi.org/10.1117/12.2237473

KEYWORDS: Phase shifts, Microscopy, Polarization, Interferometry, Interferometers, Sensors, Silicon, 3D metrology, Microscopes, Mirrors

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Proceedings Article | 22 April 2016 Presentation + Paper

Comprehensive Monte-Carlo simulator for optimization of imaging parameters for high sensitivity detection of skin cancer at the THz

Michael Ney, Ibrahim Abdulhalim

Proceedings Volume 9721, 97210W (2016) https://doi.org/10.1117/12.2209486

KEYWORDS: Terahertz radiation, Monte Carlo methods, Skin, Skin cancer, Tissues, Polarimetry, Tissue optics, Collagen, Blood vessels, Scattering

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Proceedings Article | 19 April 2016 Presentation + Paper

Architecture, development and implementation of a SWIR to visible integrated up-conversion imaging device

Gabby Sarusi, Tzvi Templeman, Elad Hechster, Nimrod Nissim, Vladimir Vitenberg, Nitzan Maman, Amir Tal, Assi Solodar, Guy Makov, Ibrahim Abdulhalim, Iris Visoly-Fisher, Yuval Golan

Proceedings Volume 9884, 98840L (2016) https://doi.org/10.1117/12.2231526

KEYWORDS: Short wave infrared radiation, Absorption, Photons, Visible radiation, Organic light emitting diodes, Upconversion, Gallium arsenide, Diffusion, Interfaces, Electrons

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SPIE Journal Paper | 24 December 2015 Open Access

Ultrahigh polarimetric image contrast enhancement for skin cancer diagnosis using InN plasmonic nanoparticles in the terahertz range

Michael Ney, Ibrahim Abdulhalim

JBO, Vol. 20, Issue 12, 125007, (December 2015) https://doi.org/10.1117/12.10.1117/1.JBO.20.12.125007

KEYWORDS: Nanoparticles, Skin, Tissues, Scattering, Terahertz radiation, Polarimetry, Skin cancer, Indium nitride, Monte Carlo methods, Particles

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Proceedings Article | 7 October 2014 Paper

Tailored liquid crystal devices for specific imaging applications

A. Safrani, M. Abuleil, S. Isaac, A. Solodar, I. Klapp, M. Kirzhner, I. Abdulhalim

Proceedings Volume 9182, 91820R (2014) https://doi.org/10.1117/12.2062808

KEYWORDS: Liquid crystals, Polarization, Tunable filters, Imaging systems, Wave plates, LCDs, Spatial light modulators, Imaging devices, Optical filters, Polarizers

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Proceedings Article | 27 August 2014 Paper

PbS sculptured thin film and their effect on liquid crystals alignment

Ashok Chaudhary, Matvey Klebanov, Ibrahim Abdulhalim

Proceedings Volume 9172, 917209 (2014) https://doi.org/10.1117/12.2072903

KEYWORDS: Liquid crystals, Lead, Polarizers, Thin films, Birefringence, Optical alignment, Glasses, Ultraviolet radiation, Polymers, Optical microscopes

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SPIE Journal Paper | 3 April 2014

Fiber-coupled polarization independent liquid crystal Fabry–Perot tunable filter

Sivan Isaacs, Francis Placido, Ibrahim Abdulhalim

OE, Vol. 53, Issue 04, 047101, (April 2014) https://doi.org/10.1117/12.10.1117/1.OE.53.4.047101

KEYWORDS: Liquid crystals, Dielectric polarization, Beam splitters, Tunable filters, Optical fibers, Wave plates, Mirrors, Optical filters, Polarization, Prisms

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Proceedings Article | 26 September 2013 Paper

Analysis of skin moles from optical spectropolarimetric images

Yitzhak Yitzhaky, Lior Graham, Ibrahim Abdulhalim

Proceedings Volume 8856, 88562J (2013) https://doi.org/10.1117/12.2024854

KEYWORDS: Skin, Image segmentation, Polarization, Tissue optics, Skin cancer, Light scattering, Visualization, Image analysis, Diagnostics, Cancer

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SPIE Journal Paper | 20 June 2013 Open Access

Classification of skin moles from optical spectropolarimetric images: a pilot study

Lior Graham, Yitzhak Yitzhaky, Ibrahim Abdulhalim

JBO, Vol. 18, Issue 11, 111403, (June 2013) https://doi.org/10.1117/12.10.1117/1.JBO.18.11.111403

KEYWORDS: Skin, Image segmentation, Tissue optics, Image classification, Polarization, Biomedical optics, Skin cancer, Image analysis, Imaging systems, Optical imaging

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Proceedings Article | 13 May 2013 Paper

Low coherence full field interference microscopy or optical coherence tomography: recent advances, limitations and future trends

I. Abdulhalim

Proceedings Volume 8788, 878802 (2013) https://doi.org/10.1117/12.2025199

KEYWORDS: Microscopes, Optical coherence tomography, Microscopy, Coherence (optics), Objectives, Temporal coherence, Spatial coherence, Silicon, Optical metrology, Reflectivity

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SPIE Journal Paper | 9 May 2013

On alignment of nematic liquid crystals infiltrating chiral sculptured thin films

Hadar Reisman, Drew Pulsifer, Raul Martin-Palma, Akhlesh Lakhtakia, Roman Dąbrowski, Ibrahim Abdulhalim

JNP, Vol. 7, Issue 01, 073591, (May 2013) https://doi.org/10.1117/12.10.1117/1.JNP.7.073591

KEYWORDS: Liquid crystals, Molecules, Thin films, Refractive index, Reflectivity, Chalcogenide glass, Glasses, Near infrared, Ultraviolet radiation, Optical fibers

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Proceedings Article | 8 November 2012 Paper

Nano-dimensional short pitch ferroelectric liquid crystal materials and devices with improved performance at oblique incidence

Hadar Krupsky Reisman, Evgeny Pozhidaev, Sofia Torgova, Ibrahim Abdulhalim

Proceedings Volume 8475, 847517 (2012) https://doi.org/10.1117/12.970317

KEYWORDS: Reflectivity, Liquid crystals, Polarizers, Ferroelectric LCDs, Polarization, Modulation, Electro optics, Biomedical optics, Optical imaging, Prisms

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Proceedings Article | 10 October 2012 Paper

On alignment of nematic liquid crystals infiltrating chiral sculptured thin films

Hadar Krupsky Reisman, Drew Pulsifer, Raúl Martín-Palma, Akhlesh Lakhtakia, Roman Dąbrowski, Ibrahim Abdulhalim

Proceedings Volume 8465, 84651E (2012) https://doi.org/10.1117/12.964414

KEYWORDS: Liquid crystals, Molecules, Reflectivity, Refractive index, Thin films, Chalcogenide glass, Optical fibers, Glasses, Near infrared, Polarizers

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SPIE Journal Paper | 25 September 2012 Open Access

Special Section Guest Editorial: Selected Papers from the 4th Mediterranean Conference on Nanophotonics

Zeev Zalevsky, Ekmel Özbay, Ibrahim Abdulhalim

JNP, Vol. 6, Issue 01, 061699, (September 2012) https://doi.org/10.1117/12.10.1117/1.JNP.6.061699

KEYWORDS: Nanophotonics, Photonic crystals, Nanotechnology, Electro optics, Metamaterials, Plasmonics, Photonic crystal devices, Photonic devices, Logic devices, Plasmonic couplers

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SPIE Journal Paper | 18 September 2012

Detailed study of surface-enhanced Raman scattering from metallic nanosculptured thin films and their potential for biosensing

Atef Shalabney, Chinmay Khare, Jens Bauer, Bernd Rauschenbach, Ibrahim Abdulhalim

JNP, Vol. 6, Issue 01, 061605, (September 2012) https://doi.org/10.1117/12.10.1117/1.JNP.6.061605

KEYWORDS: Surface enhanced Raman spectroscopy, Silver, Molecules, Particles, Raman scattering, Nanostructures, Silicon, Raman spectroscopy, Thin films, Bioalcohols

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SPIE Journal Paper | 8 August 2012 Open Access

Publisher's Note: Microspot sensing based on surface-enhanced fluorescence from nanosculptured thin films

Alina Karabchevsky, Ibrahim Abdulhalim, Chinmay Khare, Bernd Rauschenbach

JNP, Vol. 6, Issue 01, 060105, (August 2012) https://doi.org/10.1117/12.10.1117/1.JNP.6.060105

KEYWORDS: Luminescence, Thin films, Electro optics, Nanotechnology

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SPIE Journal Paper | 21 June 2012

Microspot sensing based on surface-enhanced fluorescence from nanosculptured thin films

Alina Karabchevsky, Ibrahim Abdulhalim, Chinmay Khare, Bernd Rauschenbach

JNP, Vol. 6, Issue 01, 061508, (June 2012) https://doi.org/10.1117/12.10.1117/1.JNP.6.061508

KEYWORDS: Luminescence, Silver, Silicon, Gold, Metals, Thin films, Rhodamine, Biosensing, Microscopes, Nanorods

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SPIE Journal Paper | 23 April 2012

Liquid crystal active nanophotonics and plasmonics: from science to devices

Ibrahim Abdulhalim

JNP, Vol. 6, Issue 01, 061001, (April 2012) https://doi.org/10.1117/12.10.1117/1.JNP.6.061001

KEYWORDS: Liquid crystals, Molecules, Nanophotonics, Plasmonics, Nanostructures, Nanoparticles, Dielectrics, Metals, Solids, Particles

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Proceedings Article | 26 September 2011 Paper

Microspot surface enhanced fluorescence from sculptured thin films for control of antibody immobilization

Alina Karabchevsky, Christian Patzig, Bernd Rauschenbach, Ibrahim Abdulhalim

Proceedings Volume 8104, 81040L (2011) https://doi.org/10.1117/12.899616

KEYWORDS: Luminescence, Silver, Metals, Molecules, Thin films, Silica, Receptors, Microscopes, Rhodamine, Biosensing

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Proceedings Article | 13 September 2011 Paper

Optical immunosensor for endocrine disruptor nanolayer detection by surface plasmon resonance imaging

Alina Karabchevsky, Lev Tsapovsky, Robert Marks, Ibrahim Abdulhalim

Proceedings Volume 8099, 809918 (2011) https://doi.org/10.1117/12.899617

KEYWORDS: Silver, Surface plasmons, Glasses, Cobalt, Sensors, Metals, Cameras, Radon transform, Speckle, Biosensors

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SPIE Journal Paper | 1 August 2011 Open Access

Differential optical spectropolarimetric imaging system assisted by liquid crystal devices for skin imaging

Ofir Aharon, Ibrahim Abdulhalim, Ofer Arnon, Lior Rosenberg, Eldad Silberstein, Victor Dyomin

JBO, Vol. 16, Issue 08, 086008, (August 2011) https://doi.org/10.1117/12.10.1117/1.3609003

KEYWORDS: Collagen, Polarization, Imaging systems, Skin, LCDs, Wave plates, Liquid crystals, Biomedical optics, Tissue optics, Tissues

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SPIE Journal Paper | 1 June 2011 Open Access

Modeling of reflectometric and ellipsometric spectra from the skin in the terahertz and submillimeter waves region

Michael Ney, Ibrahim Abdulhalim

JBO, Vol. 16, Issue 06, 067006, (June 2011) https://doi.org/10.1117/12.10.1117/1.3592779

KEYWORDS: Skin, Tissues, Dielectrics, Reflectivity, Picosecond phenomena, Skin cancer, Homogenization, Terahertz radiation, Electromagnetism, Dielectric polarization

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SPIE Journal Paper | 1 January 2011 Open Access

Special Section Guest Editorial: Selected Papers from the 3rd Mediterranean Conference on Nanophotonics

Zeev Zalevsky, Ekmel Ozbay, Ibrahim Abdulhalim

JNP, Vol. 5, Issue 01, 051899, (January 2011) https://doi.org/10.1117/12.10.1117/1.3599054

KEYWORDS: Nanophotonics, Nanotechnology, Electro optics, Research facilities, Metamaterials, Fabrication, Lanthanum

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SPIE Journal Paper | 1 January 2011

Nanoprecision algorithm for surface plasmon resonance determination from images with low contrast for improved sensor resolution

Alina Karabchevsky, Serge Karabchevsky, Ibrahim Abdulhalim

JNP, Vol. 5, Issue 01, 051813, (January 2011) https://doi.org/10.1117/12.10.1117/1.3598138

KEYWORDS: Surface plasmons, Sensors, Silver, Bioalcohols, Optical resolution, Detection and tracking algorithms, Radon transform, Metals, Cameras, Glasses

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SPIE Journal Paper | 1 January 2011

Dual-surface plasmon excitation with thin metallic nanoslits

Alina Karabchevsky, Mark Auslender, Ibrahim Abdulhalim

JNP, Vol. 5, Issue 01, 051821, (January 2011) https://doi.org/10.1117/12.10.1117/1.3609276

KEYWORDS: Metals, Plasmons, Surface plasmons, Diffraction, Silver, Interfaces, Diffraction gratings, Dielectrics, Refractive index, Sensors

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SPIE Journal Paper | 1 July 2010 Open Access

Guest Editorial: Selected Papers from the 2nd Mediterranean Conference on Nanophotonics

Zeev Zalevsky, Ekmel Ozbay, Ibrahim Abdulhalim

JNP, Vol. 4, Issue 01, 041799, (July 2010) https://doi.org/10.1117/12.10.1117/1.3475730

KEYWORDS: Nanophotonics, Physics, Electronics engineering, Nanotechnology, Electro optics, Research facilities, Waveguides, Current controlled current source

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SPIE Journal Paper | 1 March 2010 Open Access

Skin biomedical optical imaging system using dual-wavelength polarimetric control with liquid crystals

Avner Safrani, Ofir Aharon, Shahar Mor, Ofer Arnon, Lior Rosenberg, Ibrahim Abdulhalim

JBO, Vol. 15, Issue 02, 026024, (March 2010) https://doi.org/10.1117/12.10.1117/1.3394338

KEYWORDS: Skin, Polarimetry, Dielectric polarization, Liquid crystals, Dielectric filters, Imaging systems, Tissues, Optical imaging, Near infrared, Biomedical optics

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SPIE Journal Paper | 1 March 2010

Liquid crystal wavelength-independent continuous polarization rotator

Ofir Aharon, Ibrahim Abdulhalim

OE, Vol. 49, Issue 03, 034002, (March 2010) https://doi.org/10.1117/12.10.1117/1.3366545

KEYWORDS: Liquid crystals, Polarization, Wave plates, Polarizers, Polarization control, Birefringence, Spectroscopy, Ultraviolet radiation, Glasses, Optical engineering

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SPIE Journal Paper | 1 November 2009 Open Access

Guest Editorial: Mediterranean Nanophotonics

Zeev Zalevsky, Ekmel Ozbay, Ibrahim Abdulhalim

JNP, Vol. 3, Issue 01, 031799, (November 2009) https://doi.org/10.1117/12.10.1117/1.3271457

KEYWORDS: Nanophotonics, Fabrication, Nanotechnology, Electro optics, Nanolithography, Research facilities, Sensors, Modulation, Current controlled current source

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SPIE Journal Paper | 1 May 2009

Spectropolarimetric method for optic axis, retardation, and birefringence dispersion measurement

Avner Safrani, Ibrahim Abdulhalim

OE, Vol. 48, Issue 05, 053601, (May 2009) https://doi.org/10.1117/12.10.1117/1.3126628

KEYWORDS: Commercial off the shelf technology, Wave plates, Birefringence, Sapphire, Absorption, Error analysis, Optical engineering, Polarizers, Polarization, Liquid crystals

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SPIE Journal Paper | 1 January 2009

Surface plasmon sensor with enhanced sensitivity using top nano dielectric layer

Amit Lahav, Atef Shalabaney, Ibrahim Abdulhalim

JNP, Vol. 3, Issue 01, 031501, (January 2009) https://doi.org/10.1117/12.10.1117/1.3079803

KEYWORDS: Silicon, Dielectrics, Sensors, Silver, Metals, Interfaces, Prisms, Surface plasmons, Waveguides, Reflectivity

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Proceedings Article | 10 September 2008 Paper

Sensitivity enhancement of guided wave surface plasmon resonance sensors using top nano dielectric layer

Amit Lahav, Mark Auslender, I. Abdulhalim

Proceedings Volume 7041, 70410A (2008) https://doi.org/10.1117/12.794167

KEYWORDS: Dielectrics, Sensors, Silver, Metals, Waveguides, Silicon, Surface plasmons, Zirconium dioxide, Interfaces, Prisms

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Proceedings Article | 10 September 2008 Paper

Porosity effect on surface plasmon resonance from metallic sculptured thin films

Ibrahim Abdulhalim, Akhlesh Lakhtakia, Amit Lahav, Fan Zhang, Jian Xu

Proceedings Volume 7041, 70410C (2008) https://doi.org/10.1117/12.794135

KEYWORDS: Contrast transfer function, Metals, Prisms, Aluminum, Thin films, Surface plasmons, Numerical simulations, Interfaces, Glasses, Nanowires

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Proceedings Article | 10 September 2008 Paper

Comparative study of enhanced fluorescence from nano sculptured thin films

I. Abdulhalim, Alina Karabchevsky, Christian Patzig, Bernd Rauschenbach, Bodo Fuhrmann

Proceedings Volume 7041, 70410G (2008) https://doi.org/10.1117/12.795139

KEYWORDS: Luminescence, Silicon, Silver, Metals, Gold, Silica, Thin films, Copper, Nanostructures, Nanoparticles

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Proceedings Article | 29 August 2008 Paper

Grating-based nanophotonic structured configurations for biosensing

Ibrahim Abdulhalim, Mark Auslender, Shlomo Hava

Proceedings Volume 7035, 70350T (2008) https://doi.org/10.1117/12.795897

KEYWORDS: Diffraction gratings, Refractive index, Sensors, Reflectivity, Waveguides, Spectroscopy, Scatterometry, Diffraction, Nanophotonics, Dielectrics

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Proceedings Article | 27 August 2008 Paper

Liquid crystal tunable filters and polarization controllers for biomedical optical imaging

Ofir Aharon, Avner Safrani, Riki Moses, I. Abdulhalim

Proceedings Volume 7050, 70500P (2008) https://doi.org/10.1117/12.795388

KEYWORDS: Liquid crystals, Polarization, Wave plates, Polarizers, Optical filters, Biomedical optics, Tunable filters, Tissue optics, Light scattering, Optical imaging

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SPIE Journal Paper | 1 October 2007

Resonant and scatterometric grating-based nanophotonic structures for biosensing

Ibrahim Abdulhalim, Mark Auselender, Shlomo Hava

JNP, Vol. 1, Issue 01, 011680, (October 2007) https://doi.org/10.1117/12.10.1117/1.2811923

KEYWORDS: Sensors, Waveguides, Scatterometry, Reflectivity, Biosensing, Spectroscopy, Refractive index, Diffraction gratings, Diffraction, Water

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Proceedings Article | 11 July 2007 Paper

Full field frequency domain common path optical coherence tomography with annular aperture

I. Abdulhalim, Ron Friedman, Lior Liraz, Ronen Dadon

Proceedings Volume 6627, 662719 (2007) https://doi.org/10.1117/12.727993

KEYWORDS: Optical coherence tomography, Temporal coherence, Spatial coherence, Microscopes, Objectives, Microscopy, Phase imaging, Confocal microscopy, Optical filters, Spatial resolution

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Proceedings Article | 18 June 2007 Paper

Optical scatterometry with analytic approaches applied to periodic nano-arrays including anisotropic layers

I. Abdulhalim

Proceedings Volume 6617, 661714 (2007) https://doi.org/10.1117/12.726678

KEYWORDS: Silicon, Scatterometry, Reflectivity, Critical dimension metrology, Refractive index, Near infrared, Diffraction, Visible radiation, Algorithm development, Homogenization

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SPIE Journal Paper | 1 January 2007 Open Access

Guest Editorial: Selected Papers from the First Joint Israeli-Turkish Workshop on Nanophotonics

Zeev Zalevsky, Ekmel Ozbay, Ibrahim Abdulhalim

JNP, Vol. 1, Issue 01, 011699, (January 2007) https://doi.org/10.1117/12.10.1117/1.2805217

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Proceedings Article | 23 February 2006 Paper

Anisotropic layers in waveguides for mode tuning and tunable filtering

I. Abdulhalim

Proceedings Volume 6135, 61350R (2006) https://doi.org/10.1117/12.660572

KEYWORDS: Waveguides, Liquid crystals, Dielectrics, Dispersion, Wave propagation, Tunable filters, Switching, Scattering, Anisotropic filtering, Absorption

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Proceedings Article | 15 February 2006 Paper

All-fiber and fiber compatible acousto-optic modulators with potential biomedical applications

I. Abdulhalim, Israel Gannot, C. N. Pannell

Proceedings Volume 6083, 60830K (2006) https://doi.org/10.1117/12.660161

KEYWORDS: Acoustics, Modulators, Modulation, GRIN lenses, Transducers, Bragg cells, Aluminum, Phase modulation, Acousto-optics, Polarization

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SPIE Journal Paper | 1 December 2002

Operation of lateral effect photosensitive position sensors using differential time delay mode

I. Abdulhalim, S. Millward, G. Moores, L. Firth, Francis Placido

OE, Vol. 41, Issue 12, (December 2002) https://doi.org/10.1117/12.10.1117/1.1518505

KEYWORDS: Signal to noise ratio, Modulation, Sensors, Position sensors, Light sources, Electrodes, Amplifiers, Optical amplifiers, Inspection, Time metrology

Proceedings Article | 2 June 2000 Paper

Manufacturing considerations for implementation of scatterometry for process monitoring

John Allgair, David Benoit, Robert Hershey, Lloyd Litt, Ibrahim Abdulhalim, William Braymer, Michael Faeyrman, John Robinson, Umar Whitney, Yiping Xu, Piotr Zalicki, Joel Seligson

Proceedings Volume 3998, (2000) https://doi.org/10.1117/12.386465

KEYWORDS: Scatterometry, Reflectivity, Scanning electron microscopy, Critical dimension metrology, Metrology, Silicon, Atomic force microscopy, Manufacturing, Process control, Semiconducting wafers

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