Optical Nanofiber Integrated into Optical Tweezers for In Situ Fiber Probing and Optical Binding Studies†
1
Light-Matter Interactions Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa 904-0495, Japan
2
Physics Department, University College Cork, Cork, Ireland
*
Author to whom correspondence should be addressed.
†
This paper is an extended version of our paper published in Proc. SPIE 9164, Optical Trapping and Optical Micromanipulation XI; Ivan Gusachenko, Mary C. Frawley, Viet. G. Truong and Síle Nic Chormaic, “Optical Nanofiber Integrated into an Optical Tweezers for Particle Manipulation and in-Situ Fiber Probing”, 91642X (16 September 2014); doi:10.1117/12.2061442.
Photonics 2015, 2(3), 795-807; https://doi.org/10.3390/photonics2030795
Received: 5 June 2015 / Revised: 29 June 2015 / Accepted: 29 June 2015 / Published: 2 July 2015
(This article belongs to the Special Issue Optical Trapping in Biology and Nanotechnology)
Precise control of particle positioning is desirable in many optical propulsion and sorting applications. Here, we develop an integrated platform for particle manipulation consisting of a combined optical nanofiber and optical tweezers system. We show that consistent and reversible transmission modulations arise when individual silica microspheres are introduced to the nanofiber surface using the optical tweezers. The observed transmission changes depend on both particle and fiber diameter and can be used as a reference point for in situ nanofiber or particle size measurement. Thence, we combine scanning electron microscope (SEM) size measurements with nanofiber transmission data to provide calibration for particle-based fiber assessment. This integrated optical platform provides a method for selective evanescent field manipulation of micron-sized particles and facilitates studies of optical binding and light-particle interaction dynamics.
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Keywords:
optical manipulation; optical nanofiber; optical binding
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MDPI and ACS Style
Gusachenko, I.; Truong, V.G.; Frawley, M.C.; Nic Chormaic, S. Optical Nanofiber Integrated into Optical Tweezers for In Situ Fiber Probing and Optical Binding Studies. Photonics 2015, 2, 795-807.
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