A versatile system for optical manipulation experiments

Dag Hanstorp; Maksym Ivanov; Ademir F. Alemán Hernández; Jonas Enger; Ana M. Gallego; Oscar Isaksson; Carl-Joar Karlsson; Ricardo Monroy Villa; Alvin Varghese; Kelken Chang

doi:10.1117/12.2272983

25 August 2017 A versatile system for optical manipulation experiments

Dag Hanstorp, Maksym Ivanov, Ademir F. Alemán Hernández, Jonas Enger, Ana M. Gallego, Oscar Isaksson, Carl-Joar Karlsson, Ricardo Monroy Villa, Alvin Varghese, Kelken Chang

Author Affiliations +

Proceedings Volume 10347, Optical Trapping and Optical Micromanipulation XIV; 103472C (2017) https://doi.org/10.1117/12.2272983
Event: SPIE Nanoscience + Engineering, 2017, San Diego, California, United States

Abstract

In this paper a versatile experimental system for optical levitation is presented. Microscopic liquid droplets are produced on demand from piezo-electrically driven dispensers. The charge of the droplets is controlled by applying an electric field on the piezo-dispenser head. The dispenser releases droplets into a vertically focused laser beam. The size and position in 3 dimensions of trapped droplets are measured using two orthogonally placed high speed cameras. Alternatively, the vertical position is determined by imaging scattered light onto a position sensitive detector. The charge of a trapped droplets is determined by recording its motion when an electric field is applied, and the charge can be altered by exposing the droplet to a radioactive source or UV light. Further, spectroscopic information of the trapped droplet is obtained by imaging the droplet on the entrance slit of a spectrometer. Finally, the trapping cell can be evacuated, allowing investigations of droplet dynamics in vacuum. The system is utilized to study a variety of physical phenomena, and three pilot experiments are given in this paper. First, a system used to control and measure the charge of the droplet is presented. Second, it is demonstrated how particles can be made to rotate and spin by trapping them using optical vortices. Finally, the Raman spectra of trapped glycerol droplets are obtained and analyzed. The long term goal of this work is to create a system where interactions of droplets with the surrounding medium or with other droplets can be studied with full control of all physical variables.

Citation Download Citation

Dag Hanstorp, Maksym Ivanov, Ademir F. Alemán Hernández, Jonas Enger, Ana M. Gallego, Oscar Isaksson, Carl-Joar Karlsson, Ricardo Monroy Villa, Alvin Varghese, and Kelken Chang "A versatile system for optical manipulation experiments", Proc. SPIE 10347, Optical Trapping and Optical Micromanipulation XIV, 103472C (25 August 2017); https://doi.org/10.1117/12.2272983

ACCESS THE FULL ARTICLE

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