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      Permanent link:
      https://www.ias.ac.in/article/fulltext/pram/082/02/0433-0437

    • Keywords

       

      Optoelectronic tweezers; optically-induced dielectrophoresis; AC dielectrophoresis.

    • Abstract

       

      We report the development of an optoelectronic tweezers set-up which works by lightinduced dielectrophoresis mechanism to manipulate microparticles. We used thermal evaporation technique for coating the organic polymer, titanium oxide phthalocyanine (TiOPc), as a photoconductive layer on ITO-coated glass slide. Compare to the conventional optical tweezers, the technique requires optical power in 𝜇W range and provides a manipulation area of a few mm2. The set-up was used to manipulate the polystyrene microspheres and red blood cells (RBCs). The RBCs could be attracted or repelled by varying the frequency of the applied AC bias.

    • Author Affiliations

       

      R S Verma1 R Dasgupta1 N Kumar1 S Ahlawat1 A Uppal1 P K Gupta1

      1. Raja Ramanna Centre for Advanced Technology, Indore 452 013, India
    • Dates

       
  • Pramana – Journal of Physics | News

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      Posted on July 25, 2019

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