Abstract

We study the behavior of silicon microparticles in a 1064 nm Gaussian-beam optical tweezers, showing that this semiconductor can be used to perform different types of optical manipulation experiments. Depending on the focal position and the laser power used, the particles can present an oscillatory dynamics in the tweezers or can be stably 3D-trapped with a trap stiffness that allows the application of femtoNewton forces with accuracy. A new, to the best of our knowledge, interpretation based on the photoexcitation of electrons in the valence band is proposed to explain the oscillations, and the quantities associated with such dynamics (e.g., amplitude, period, etc.) were characterized as a function of relevant parameters to optical tweezers setups.

© 2020 Optical Society of America

Cell manipulation by use of diamond microparticles as handles of optical tweezers

Chi-Kuang Sun, Yin-Chieh Huang, Ping Chin Cheng, Hung-Chi Liu, and Bai-Ling Lin
J. Opt. Soc. Am. B 18(10) 1483-1489 (2001)

Microsphere-coupled optical tweezers

Mohammad Hossein Khosravi, Vahid Shahabadi, and Faegheh Hajizadeh
Opt. Lett. 46(17) 4124-4127 (2021)

Microparticle transport networks with holographic optical tweezers and cavitation bubbles

Pedro A. Quinto-Su
Opt. Lett. 44(18) 4610-4613 (2019)

Acousto-holographic optical tweezers

R. Bola, D. Treptow, A. Marzoa, M. Montes-Usategui, and E. Martín-Badosa
Opt. Lett. 45(10) 2938-2941 (2020)

Size-scaling effects for microparticles and cells manipulated by optoelectronic tweezers

Shuailong Zhang, Weizhen Li, Mohamed Elsayed, Pengfei Tian, Alasdair W. Clark, Aaron R. Wheeler, and Steven L. Neale
Opt. Lett. 44(17) 4171-4174 (2019)