CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 9922 > Article
Presentation
10 November 2016 Enhanced and preferential optical trapping in a slot-graphite photonic crystal (Conference Presentation)
Aravind Krishnan, Michelle L. Povinelli, Shao-Hua Wu, Ningfeng Huang
Author Affiliations +
Proceedings Volume 9922, Optical Trapping and Optical Micromanipulation XIII; 99221Z (2016) https://doi.org/10.1117/12.2238966
Event: SPIE Nanoscience + Engineering, 2016, San Diego, California, United States
Abstract
Optical trapping serves as a powerful tool for the manipulation of matter on the nanoscale and ultra-precise measurement of weak forces. However, the applicability of these tools is limited by the available laser power and trap efficiency. We utilized the strong confinement of light in a slot-graphite photonic crystal to develop high-efficiency parallel trapping over a large area. The stiffness is several orders of magnitude higher than conventional optical tweezers and two orders of magnitude higher than our previously demonstrated on-chip, near field traps. We demonstrate the ability to trap both dielectric and metallic nanoparticles of sub-micron size. We find that the growth kinetics of nanoparticle arrays on the slot-graphite template depends on particle size. Smaller particles diffuse more, more readily occupying the available trap sites and inhibiting the trapping of larger particles. Smaller particles also sink more into the holes in the photonic crystal, resulting in stronger mechanical confinement and a deeper potential well. We use these differences to selectively trap one type of particle out of a binary colloidal mixture, creating an efficient optical sieve. This technique has rich potential in the fields of trace analysis, optical diagnostics, and enrichment and sorting of microscopic entities and molecules.
Conference Presentation
© (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Aravind Krishnan, Michelle L. Povinelli, Shao-Hua Wu, and Ningfeng Huang "Enhanced and preferential optical trapping in a slot-graphite photonic crystal (Conference Presentation)", Proc. SPIE 9922, Optical Trapping and Optical Micromanipulation XIII, 99221Z (10 November 2016); https://doi.org/10.1117/12.2238966
ACCESS THE FULL ARTICLE
ORGANIZATIONAL
Sign in with credentials provided by your organization.
INSTITUTIONAL
Select your institution to access the SPIE Digital Library.
SELECT YOUR INSTITUTION
PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.
PERSONAL SIGN IN
No SPIE Account? Create one
PURCHASE THIS CONTENT
SUBSCRIBE TO DIGITAL LIBRARY
50 downloads per 1-year subscription
Members: $195
Non-members: $335 ADD TO CART
25 downloads per 1 - year subscription
Members: $145
Non-members: $250 ADD TO CART
PURCHASE SINGLE ARTICLE
Includes PDF, HTML & Video, when available
Members: $17.00
Non-members: $21.00 ADD TO CART
PROCEEDINGS
 PRESENTATION
WATCH
PRESENTATION SAVE TO MY LIBRARY
GET CITATION
Advertisement
Advertisement
KEYWORDS
Particles
Optical tweezers
Photonic crystals
Nanoparticles
Binary data
Dielectrics
Molecules
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top