Prof. Sailing He Profile

Prof. Sailing He

Chief Scientist/Professor at Zhejiang Univ

SPIE Involvement:

Conference Chair | Author | Editor | Student Chapter Advisor

Publications (71)

Proceedings Article | 30 September 2024 Presentation + Paper

Organization of droplets at an air-LC interface

Julian Evans, Nan Wang, Sailing He

Proceedings Volume 13121, 1312105 (2024) https://doi.org/10.1117/12.3025388

KEYWORDS: Liquid crystals, Interfaces, Engineering, Colloids, Boundary conditions, Materials properties, Liquids, Electromagnetism, Switching, Spherical lenses

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Proceedings Article | 9 March 2024 Presentation

A 4D smart imaging system for topography and hyperspectral measurement via light-sheet illumination

Zhanpeng Xu, Haodong Zhang, Longqiang Luo, Sailing He

Proceedings Volume PC12890, PC128900D (2024) https://doi.org/10.1117/12.3003158

KEYWORDS: Imaging systems, Light sources and illumination, 3D image processing, Spectral resolution, Image resolution, Hyperspectral imaging, 3D metrology, Inspection, Industrial applications, Imaging spectroscopy

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Proceedings Article | 29 September 2023 Presentation + Paper

Topology in phase separated liquid crystal systems

Julian Evans, Nan Wang, Sailing He

Proceedings Volume 12658, 126580C (2023) https://doi.org/10.1117/12.2672393

KEYWORDS: Liquid crystals, Emulsions, Spherical lenses, Mixtures, Engineering, Elasticity, Vacuum, Scanning electron microscopy

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Proceedings Article | 18 March 2021 Paper

Enhanced field uniformity of holographic near-eye display system based on spatial light modulator

Li Jiang, Shiliang Pu, Chao Yu, Hong Cai, Hui Mao, Sailing He

Proceedings Volume 11780, 117800X (2021) https://doi.org/10.1117/12.2589973

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Proceedings Article | 20 August 2020 Presentation + Paper

Preparing templated optics using cellulose nanocrystal LC

Julian Evans, Nan Wang, Chenxi Li, Tingbiao Guo, Sailing He

Proceedings Volume 11472, 114720J (2020) https://doi.org/10.1117/12.2567152

KEYWORDS: Liquid crystals, Nanocrystals, Solids, Nanoparticles, Glasses, Wave plates, Reflection, Polymers

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SPIE Journal Paper | 23 June 2020 Open Access

Stretching the spectra of Kerr frequency combs with self-adaptive boundary silicon waveguides

Jianhao Zhang, Vincent Pelgrin, Carlos Alonso-Ramos, Laurent Vivien, Sailing He, Eric Cassan

AP, Vol. 2, Issue 04, 046001, (June 2020) https://doi.org/10.1117/12.10.1117/1.AP.2.4.046001

KEYWORDS: Waveguides, Dispersion, Silicon, Frequency combs, Picosecond phenomena, Resonators, Phase matching, Cerenkov radiation imaging, Cladding, Nonlinear optics

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Proceedings Article | 18 November 2019 Paper

Effect of defocus blur on the signal distribution of camera-based remote photoplethysmography

Shuang Yang, Yudong Zhu, Sailing He

Proceedings Volume 11187, 111871A (2019) https://doi.org/10.1117/12.2536628

KEYWORDS: Video, Heart, Photoplethysmography, Blood, Absorption, Facial recognition systems, Nose, Fourier transforms

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Proceedings Article | 29 August 2019 Paper

Hierarchical self-assembly in liquid crystals

Julian Evans, Nan Wang, Chenxi Li, Tingbiao Guo, Sailing He

Proceedings Volume 11092, 110920R (2019) https://doi.org/10.1117/12.2529953

KEYWORDS: Liquid crystals, Molecular self-assembly, Nanoparticles, Nanorods, Interfaces, Thin films

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Proceedings Article | 14 September 2018 Presentation + Paper

Biphasic and colloidal liquid crystal systems

Julian Evans, Nan Wang, Sailing He

Proceedings Volume 10735, 1073512 (2018) https://doi.org/10.1117/12.2323487

KEYWORDS: Liquid crystals, LCDs, Electromagnetism, Molecular self-assembly, Polymers, Molecules, Crystals, Optical spheres, Analytical research, Optical instrument design

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Proceedings Article | 24 July 2018 Paper

ProNet: an accurate and light-weight CNN model for retail products recognition

Wei Yi, Yaoran Sun, Sailing He

Proceedings Volume 10827, 1082715 (2018) https://doi.org/10.1117/12.2326939

KEYWORDS: Convolution, RGB color model, Image processing, Detection and tracking algorithms, Visual process modeling, Machine vision, Computer vision technology, Performance modeling, Neural networks, Databases

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Nowadays, retail products recognition technologies are mostly based on traditional two-stages computer vision methods. Those methods first create features manually, followed by a classification algorithm to distinguish all products. Since deep learning methods have achieved state-of-the-art results on many tasks and have unified pipelines, it would be promising to apply deep models into products recognition. In this paper, we have built up a new light CNN architecture named ProNet for this task. The 27-layers ProNet combines the advantages of ResNet and Mobilenet. Depth-wise separable convolution and residual connection are two main operations in the architecture design. Depth-wise separable convolution is used to cut down the computation cost. Residual connection is used to help network learn better feature representations and converge to a better point during training. Compared with other commonly used CNN architectures, our ProNet is relatively computational efficient, but it can still get good performances on several public datasets. We first test ProNet architecture on ImageNet dataset. Top 1 average accuracy of 70.8% is got. After that, we test ProNet on another public dataset ALOI and our own task-specific retail products dataset GroOpt using transfer learning. Using this base model, we get an average accuracy of 98% on ALOI and 96% on GroOpt, which are both much higher than traditional SIFT based methods. Results show that ProNet is an accurate model. To make ProNet transferable in other environments, we apply the following two strategies: (1) a white balance augmentation algorithm to randomly change the RGB ratio of every image. (2) add another linear classifier on top feature maps to help distinguish very similar samples. Using augmented training set and modified model, we have trained ProNetV2. This improved version gets an accuracy of 99% on both ALOI and GroOpt. We have also embedded ProNetV2 model into a smart phone with 2GB RAM and test it under different situations, including different light illuminations, backgrounds, etc. An average accuracy of 96% and processing time of 0.1s per image are reached. Those results prove the effectiveness and usefulness of our proposed networks.

Proceedings Article | 25 August 2017 Presentation + Paper

Self-assembly in chiral nematic liquid crystal

Julian Evans, Nan Wang, Iam Choon Khoo, Sailing He

Proceedings Volume 10361, 1036103 (2017) https://doi.org/10.1117/12.2272574

KEYWORDS: Liquid crystals, Nanoparticles, Molecular self-assembly, Nanostructures

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Proceedings Article | 15 March 2016 Paper

Two-dimensional designed fabrication of subwavelength grating HCG mirror on silicon-on-insulator

Shen-Che Huang, Kuo-Bin Hong, Tien-Chang Lu, Sailing He

Proceedings Volume 9757, 97570C (2016) https://doi.org/10.1117/12.2212390

KEYWORDS: Mirrors, Silicon, Vertical cavity surface emitting lasers, Optical design, Computer aided design, Reflectivity, Polarization control, Distributed Bragg reflectors, Destructive interference, Semiconductor lasers, Semiconducting wafers, Structural design, Reflectors, Lithography

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Proceedings Article | 10 August 2015 Paper

Hot-wire sandwiched Fabry-Perot interferometer for microfluidic flow rate sensing

Ying Li, Guofeng Yan, Liang Zhang, Sailing He

Proceedings Volume 9620, 96200G (2015) https://doi.org/10.1117/12.2193350

KEYWORDS: Microfluidics, Fiber Bragg gratings, Sensors, Capillaries, Fabry–Perot interferometry, Reflectors, Optical fibers, Single mode fibers, Neodymium, Actuators

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Proceedings Article | 10 August 2015 Paper

Temperature insensitive magnetic field sensor based on an etched TCFMI cascaded with a FBG

Guofeng Yan, Liang Zhang, Sailing He

Proceedings Volume 9620, 96200I (2015) https://doi.org/10.1117/12.2193536

KEYWORDS: Magnetism, Fiber Bragg gratings, Magnetic sensors, Temperature metrology, Cladding, Sensors, Single mode fibers, Etching, Neodymium, Interferometers

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Proceedings Article | 10 August 2015 Paper

Fabry-Perot interferometer based on etched side-hole fiber for microfluidic refractive index sensing

Shengnan Wu, Guofeng Yan, Bin Zhou, Sailing He

Proceedings Volume 9620, 962005 (2015) https://doi.org/10.1117/12.2193322

KEYWORDS: Microfluidics, Refractive index, Etching, Single mode fibers, Fabry–Perot interferometry, Temperature metrology, Wet etching, Sodium, Scanning electron microscopy, Fiber optics

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Proceedings Article | 10 August 2015 Paper

Enlarged-taper tailored Fiber Bragg grating with polyvinyl alcohol coating for humidity sensing

Yanhong Liang, Guofeng Yan, Sailing He

Proceedings Volume 9620, 962007 (2015) https://doi.org/10.1117/12.2193414

KEYWORDS: Cladding, Fiber Bragg gratings, Humidity, Sensors, Reflection, Fiber optics sensors, Single mode fibers, Structural sensing, Coating, Refractive index

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Proceedings Article | 8 March 2014 Paper

Observation of optically induced transparency effect in silicon nanophotonic wires with graphene

Longhai Yu, Jiajiu Zheng, Daoxin Dai, Sailing He

Proceedings Volume 8989, 89890C (2014) https://doi.org/10.1117/12.2047618

KEYWORDS: Graphene, Silicon, Nanophotonics, Modulation, Absorption, Transparency, Doping, Optical lithography, Optoelectronics, Photonics

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Proceedings Article | 8 March 2014 Paper

A novel phase-sensitive SPR biosensor array based on prism phase modulator

Gaoao Ye, Wei Yang, Li Jiang, Jun Qian, Sailing He

Proceedings Volume 8989, 89890Q (2014) https://doi.org/10.1117/12.2047367

KEYWORDS: Prisms, Biosensors, Microfluidics, Modulation, Surface plasmons, Sensors, Modulators, Refractive index, Gold, Fiber optics sensors

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SPIE Journal Paper | 24 January 2014 Open Access

Electric field Monte Carlo simulation of focused stimulated emission depletion beam, radially and azimuthally polarized beams for in vivo deep bioimaging

Fuhong Cai, Sailing He

JBO, Vol. 19, Issue 01, 011022, (January 2014) https://doi.org/10.1117/12.10.1117/1.JBO.19.1.011022

KEYWORDS: Monte Carlo methods, Stimulated emission depletion microscopy, Scattering, Laser scattering, Spherical lenses, Microscopy, Optical simulations, Polarization, In vivo imaging, Diffraction

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Proceedings Article | 6 March 2013 Paper

Hybrid nanoplasmonic waveguides and nanophotonic integrated devices on silicon

Daoxin Dai, Xiaowei Guan, Sailing He

Proceedings Volume 8628, 862808 (2013) https://doi.org/10.1117/12.2007917

KEYWORDS: Plasmonic waveguides, Silicon, Waveguides, Metals, Silica, Plasmonics, Nanoplasmonics, Resonators, Dielectrics, Wave propagation

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Proceedings Article | 4 March 2013 Paper

Tea quality and classification evaluation using multi-wavelength light-emitting diodes induced fluorescence spectroscopy

Chao Feng, Xuan Liu, Chunsheng Yan, Sailing He, Liang Mei

Proceedings Volume 8641, 864122 (2013) https://doi.org/10.1117/12.2004479

KEYWORDS: Light emitting diodes, Luminescence, Principal component analysis, Fluorescence spectroscopy, Laser induced fluorescence, Classification systems, Remote sensing, Light sources, Statistical analysis, Feature extraction

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Proceedings Article | 25 April 2012 Paper

Luminescent photonic crystal cavities for fiber-optic sensors, coupled dissimilar cavities and optofluidics

Mehmet Dündar, Bowen Wang, Timothy Siahaan, Joost Voorbraak, Noud Speijcken, Richard Nötzel, Marinus van der Hoek, Sailing He, Andrea Fiore, Rob Van der Heijden

Proceedings Volume 8425, 842508 (2012) https://doi.org/10.1117/12.921919

KEYWORDS: Liquids, Sensors, Waveguides, Particles, Photonic crystals, Fiber optics sensors, Glasses, Refractive index, Microfluidics, Scanning electron microscopy

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SPIE Journal Paper | 6 April 2012 Open Access

Using graphics processing units to accelerate perturbation Monte Carlo simulation in a turbid medium

Fuhong Cai, Sailing He

JBO, Vol. 17, Issue 04, 040502, (April 2012) https://doi.org/10.1117/12.10.1117/1.JBO.17.4.040502

KEYWORDS: Monte Carlo methods, Scattering, Photodetectors, Sensors, Graphics processing units, Absorption, Computer simulations, Detection and tracking algorithms, Single photon detectors, Electromagnetism

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Proceedings Article | 2 February 2012 Paper

Integrated silicon photonic nanocircuits and technologies for optical interconnect and optical sensing

Daoxin Dai, Sailing He

Proceedings Volume 8265, 82650L (2012) https://doi.org/10.1117/12.910940

KEYWORDS: Waveguides, Plasmonic waveguides, Silicon, Microrings, Metals, Optical sensors, Optical sensing, Resonators, Reflectivity, Nanowires

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Proceedings Article | 28 November 2011 Paper

Switchable polarization-sensitive surface plasmon resonance of highly stable gold nanorods liquid crystals composites

Qingkun Liu, Jun Qian, Fuhong Cai, Ivan Smalyukh, Sailing He

Proceedings Volume 8308, 830810 (2011) https://doi.org/10.1117/12.905435

KEYWORDS: Liquid crystals, Surface plasmons, Gold, Composites, Optical metamaterials, Nanoparticles, Polarizers, Magnetism, Polarization, Nanorods

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Proceedings Article | 8 September 2011 Paper

Two-pump four-wave mixing in silicon waveguides for broadband wavelength conversion

Shiming Gao, Lizhong Cao, En-Kuang Tien, Yuewang Huang, Qiang Liu, Qi Song, Salih Kalyoncu, Sailing He, Ozdal Boyraz

Proceedings Volume 8120, 81200O (2011) https://doi.org/10.1117/12.892882

KEYWORDS: Waveguides, Silicon, Four wave mixing, Telecommunications, Signal attenuation, Wave propagation, Tunable lasers, Optical communications, Nonlinear optics, Absorption

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Proceedings Article | 1 March 2011 Paper

InGaAsP photonic crystal slot nanobeam waveguides for refractive index sensing

Bowen Wang, Mehmet Dündar, Richard Nötzel, Fouad Karouta, Sailing He, Rob van der Heijden

Proceedings Volume 7946, 79461C (2011) https://doi.org/10.1117/12.873709

KEYWORDS: Waveguides, Refractive index, Water, Slow light, Photonic crystals, Scanning electron microscopy, Sensors, Luminescence, Liquids, Mirrors

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Proceedings Article | 3 January 2011 Paper

Silicon-nanowire-based optical sensor with high sensitivity and large measurement range by using Mach-Zehnder interferometer-coupled microring

Jianwei Wang, Sailing He, Daoxin Dai

Proceedings Volume 7990, 79900V (2011) https://doi.org/10.1117/12.888453

KEYWORDS: Microrings, Refractive index, Silicon, Liquids, Optical sensors, Sensors, Reflectivity, Cladding, Optical sensing, Nanowires

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SPIE Journal Paper | 1 January 2011 Open Access

Multifunctional optical imaging using dye-coated gold nanorods in a turbid medium

Fuhong Cai, Jun Qian, Li Jiang, Sailing He

JBO, Vol. 16, Issue 1, 016002, (January 2011) https://doi.org/10.1117/12.10.1117/1.3526700

KEYWORDS: Raman spectroscopy, Luminescence, Signal detection, Absorption, Gold, Optical imaging, Molecules, Nanoparticles, Tissues, Nanorods

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SPIE Journal Paper | 1 June 2010 Open Access

Experimental demonstration of an ultracompact polarization beamsplitter based on a multimode interference coupler with internal photonic crystals

Y. Shi, Naeem Shahid, M. Li, Audrey Berrier, Sailing He, Srinivasan Anand

OE, Vol. 49, Issue 06, 060503, (June 2010) https://doi.org/10.1117/12.10.1117/1.3454377

KEYWORDS: Polarization, Brain-machine interfaces, Beam splitters, Photonic crystals, Waveguides, Optical communications, Birefringence, Anisotropy, Wave propagation, Optical engineering

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SPIE Journal Paper | 1 February 2010

Tunable multicolored hybrid metallic nanoparticles for live human cancer cell imaging

Rui Hu, Ken-Tye Yong, Hong Ding, Paras Prasad, Sailing He

JNP, Vol. 4, Issue 01, 041545, (February 2010) https://doi.org/10.1117/12.10.1117/1.3361662

KEYWORDS: Nanoparticles, Silver, Cancer, Polymers, Gold, Transmission electron microscopy, Visible radiation, Near infrared, Microscopes, Nanorods

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Proceedings Article | 3 December 2009 Paper

Observation of the thermal nonlinear optical effect in a microring resonator based on a small SU-8 polymer ridge optical waveguide

Liu Yang, Daoxin Dai, Jianjun He, Sailing He

Proceedings Volume 7631, 76310B (2009) https://doi.org/10.1117/12.851789

KEYWORDS: Thermal effects, Waveguides, Polymers, Nonlinear optics, Microrings, Absorbance, Resonators, Brain-machine interfaces, Polymer multimode waveguides, Thermography

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Proceedings Article | 2 December 2009 Paper

Phase-tunable polarization division multiplexing DPSK receiver using a single demodulator

Ying Gao, Yanqiao Xie, Lei Xu, Sailing He

Proceedings Volume 7630, 763003 (2009) https://doi.org/10.1117/12.852310

KEYWORDS: Polarization, Receivers, Phase shift keying, Birefringence, Phase modulation, Signal detection, Multiplexing, Modulation, Signal generators, Demodulation

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Proceedings Article | 2 December 2009 Paper

Bragg grating-assisted optical triplexer using two silicon nanowire-based directional couplers

Ning Zhu, Zhechao Wang, Lech Wosinski, Sailing He

Proceedings Volume 7630, 76300W (2009) https://doi.org/10.1117/12.851132

KEYWORDS: Silicon, Fiber Bragg gratings, Directional couplers, Modulation, Nanophotonics, Optical design, Photonics, Waveguides, Refractive index, Silica

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Proceedings Article | 26 November 2009 Paper

Experimental demonstration of an ultracompact polarization beam splitter based on a bidirectional grating coupler

Zhechao Wang, Yongbo Tang, Ning Zhu, Lech Wosinski, Daoxin Dai, Urban Westergren, Sailing He

Proceedings Volume 7631, 763103 (2009) https://doi.org/10.1117/12.851621

KEYWORDS: Polarization, Photonics, Beam splitters, Silicon, Waveguides, Diffraction gratings, Etching, Electron beam lithography, Optical design, Refractive index

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Proceedings Article | 5 August 2009 Paper

Experimental demonstration of a centralized light source OCDMA-PON based on polarization multiplexing

Jie Liu, Changjian Guo, Dawei Wang, Sailing He

Proceedings Volume 7386, 73861B (2009) https://doi.org/10.1117/12.838651

KEYWORDS: Polarization, Clocks, Light sources, Computer programming, Modulation, Multiplexing, Modulators, Optical amplifiers, Optical filters, Eye

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Proceedings Article | 12 May 2009 Paper

Transmission enhancement of light through a metallic nano-slit with periodic metallic nanostrips

Yanxia Cui, Yi Jin, Yoichi Okuno, Sailing He

Proceedings Volume 7353, 73530S (2009) https://doi.org/10.1117/12.819919

KEYWORDS: Metals, Silver, Waveguides, Electromagnetism, Antennas, Light harvesting, Modulation, Surface plasmons, Reflection, Magnetism

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Proceedings Article | 18 February 2009 Paper

Compact silicon-based wavelength-selective photonic integrated devices and the applications

Daoxin Dai, Sailing He

Proceedings Volume 7220, 72200D (2009) https://doi.org/10.1117/12.808474

KEYWORDS: Waveguides, Brain-machine interfaces, Polarization, Silicon, Silica, Reflectivity, Reflectors, Photonic integrated circuits, Photonic devices, Nanowires

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SPIE Journal Paper | 1 January 2009 Open Access

Colloidal mesoporous silica nanoparticles with protoporphyrin IX encapsulated for photodynamic therapy

Jun Qian, Arash Gharibi, Sailing He

JBO, Vol. 14, Issue 01, 014012, (January 2009) https://doi.org/10.1117/12.10.1117/1.3083427

KEYWORDS: Nanoparticles, Silica, Luminescence, Photodynamic therapy, Molecules, Absorption, Tumors, Oxygen, Cancer, In vitro testing

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