Microscope-integrated micromanipulator based on multiple VCSEL traps

Bing Shao, Sanja Zlatanovic, Sadik Esener

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The compactness of VCSELs (Vertical Cavity Surface Emitting Lasers) provides them the ability to meet the demands of current biochip technologies. In earlier research, optical trapping of live biological cells and microspheres based on VCSEL array has been realized in the form of parallel static traps on a translation stage. In microfluidic systems (lab-on-a-chip devices), the background flow introduces complexity and uncertainty in velocity and force analysis on target microparticles, making the capability of transporting biological objects without moving sample highly desirable. Moreover independently controllable traps offer more flexibility in microparticle manipulation. In this paper, a microscope-integrated VCSEL trapping system capable of independent control and batch processing of microparticles is devised and demonstrated. Optical design considerations for keeping stable trapping performance while multiplexing are addressed. Both a single optical trap and a trap array can be controlled independently by tilting mirror while their relative depth can be adjusted without power loses in optical system. In the micromanipulator, a single VCSEL trap serves as a collector and distributor, while a VCSEL array provides the carrier for synchronous processing and small range shift. Potential improvement based on two independently controlled VCSEL arrays is discussed and related applications are investigated.

Original languageEnglish (US)
Article number08
Pages (from-to)62-72
Number of pages11
JournalUnknown Journal
Volume5514
DOIs
StatePublished - 2004
Externally publishedYes

Fingerprint

Micromanipulators
Surface emitting lasers
surface emitting lasers
Lasers
Microscopes
microscopes
traps
cavities
laser arrays
microparticles
Optical Tweezers
trapping
batch processing
lab-on-a-chip devices
distributors
Biochips
Lab-on-a-chip
Optical Devices
Microfluidics
Optical design

Keywords

  • Lab-on-a-chip
  • Microfluidic System
  • Micromanipulator
  • Optical tweezers
  • VCSEL

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Condensed Matter Physics

Cite this

Microscope-integrated micromanipulator based on multiple VCSEL traps. / Shao, Bing; Zlatanovic, Sanja; Esener, Sadik.

In: Unknown Journal, Vol. 5514, 08, 2004, p. 62-72.

Research output: Contribution to journalArticle

Shao, Bing ; Zlatanovic, Sanja ; Esener, Sadik. / Microscope-integrated micromanipulator based on multiple VCSEL traps. In: Unknown Journal. 2004 ; Vol. 5514. pp. 62-72.
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