CONFERENCE PROCEEDINGS
Advanced Search
Home > Proceedings > Volume 10074 > Article
Presentation
24 April 2017 Holographic trapping of non-spherical particles with 3D refractive index measurements (Conference Presentation)
Kyoohyun Kim, YongKeun Park
Author Affiliations +
Proceedings Volume 10074, Quantitative Phase Imaging III; 1007405 (2017) https://doi.org/10.1117/12.2251571
Event: SPIE BiOS, 2017, San Francisco, California, United States
Abstract
Holographic optical tweezers (HOTs) have been utilized for trapping microscopic particles in three dimensions with multiple foci generated by wavefront shaping of light, which can manipulate three-dimensional (3-D) positions of colloidal particles as well as exerting an optical force on particles. So far, most experiments using HOTs have been conducted for trapping spherical particles because optical principles can easily predict optical forces and the responding motion of microspheres. For non-spherical particles, however, calculation of optical forces and torques exerting on samples is very complicated, and the orientation control of non-spherical particles is limited since the non-spherical particles tend to align along the optic axis of the trapping beam. Here, we propose and experimentally demonstrate 3-D trapping of non-spherical particles by wavefront shaping of light based on the measurement of 3-D refractive index (RI) distribution of samples. The 3-D RI distribution of non-spherical particles was measured by optical diffraction tomography and the phase hologram which can generate stable optical traps for the samples was calculated by iterative 3-D Gerchberg-Saxton algorithm from the measured 3-D RI distribution. We first validate the proposed method for stable trapping and orientation control of 2-m colloidal PMMA ellipsoids. The proposed method is also exploited for rotating, folding and assembly of red blood cells.
Conference Presentation
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Citation Download Citation
Kyoohyun Kim and YongKeun Park "Holographic trapping of non-spherical particles with 3D refractive index measurements (Conference Presentation)", Proc. SPIE 10074, Quantitative Phase Imaging III, 1007405 (24 April 2017); https://doi.org/10.1117/12.2251571
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
3D metrology
Holography
Refractive index
Optical tweezers
Wavefronts
Diffraction
RELATED CONTENT
Subscribe to Digital Library
Receive Erratum Email Alert
Back to Top