Optical conveyor belt for delivery of submicron objects

Tomáš Čižmár, Veneranda Garćs-Chávez, Kishan Dholakia, Pavel Zemánek

Research output: Contribution to journalArticlepeer-review

202 Citations (Scopus)


We demonstrate an optical conveyor belt that provides trapping and subsequent precise delivery of several submicron particles over a distance of hundreds of micrometers. This tool is based on a standing wave (SW) created from two counter-propagating nondiffracting beams where the phase of one of the beams can be changed. Therefore, the whole structure of SW nodes and antinodes moves delivering confined micro-objects to specific regions in space. Based on the theoretical calculations, we confirm experimentally that certain sizes of polystyrene particles jump more easily between neighboring axial traps and the influence of the SW is much weaker for certain sizes of trapped object. Moreover, the measured ratios of longitudinal and lateral optical trap stiffnesses are generally an order of magnitude higher compared to the classical single beam optical trap.

Original languageEnglish
Article number174101
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Issue number17
Publication statusPublished - 2005 Apr 25

Bibliographical note

Funding Information:
This work was partially supported by the ISI IRP (AV0Z20650511), GA AS CR (IAA1065203), EC 6FP NEST ADVENTURE Activity (ATOM3D, Project No. 508952), and European Science Foundation (02-PE-SONS-063-NOMSAN project).

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)


Dive into the research topics of 'Optical conveyor belt for delivery of submicron objects'. Together they form a unique fingerprint.

Cite this