Optoelectronic tweezer

Abstract. Programmable manipulation of particles or cells plays an important role in many biological and medical applications. Here a new programmable micro manipulator, named lab-on-a-display, in which particles are manipulated by optically induced electrokinetic forces generated from an optoelectronic tweezers on a liquid crystal display, is introduced. This optoelectrofluidic platform has been utilized to manipulate various kinds of cells such as blood cells, oocytes, and motile bacteria for several biotechnological applications. 

In 2005, Chiou et al. first introduced an optoelectronic tweezers (OET) device, which is composed of ITO plate electrodes for the application of a voltage and hydrogenated amorphous silicon (a-Si H) as a photoconductive layer deposited on the plate electrode [34]. Since the intrinsic a-Si H has... 

H. Hwang, Y.-J. Choi, W. Choi, S.-H. Kim, J. Jang and J.-K. Park, Interactive manipulation of blood cells using a lens-integrated liquid crystal display based optoelectronic tweezers system. Electrophoresis, 29(6), 1203-1212 (2008). 

H. Hwang, J.-J. Kim and J.-K. Park, Experimental investigation of electrostatic particle-particle interactions in optoelectronic tweezers, The Journal of Physical Chemistry B, 112(32), 9903-9908 (2008). 

W. Choi, S.-W. Nam, H. Hwang, S. Park and J.-K. Park, Programmable manipulation of motile cells in optoelectronic tweezers using a grayscale image. Applied Physics Letters, 93(14), 143901 (2008). 

D.-H. Lee, H. Hwang and J.-K. Park, Droplet manipulation using optically-induced dielectrophoresis in a chaimel-integrated optoelectronic tweezers, The 13th International Conference on Miniaturized Systems for Chemistry and Life Sciences, November 1-5, 2009, Jeju Island, Korea. 

The main advantage of optoelectronic tweezers over optical tweezers is that the required optical power is orders of magnitudes lower... 

Another approach called optoelectronic tweezers shows great promised for cell sorting. Optoelectronic tweezers use direct optical images to create high-resolution DEP electrodes. The optoelectronic tweezers are constructed by assembling a ground layer (indium tin oxide (ITO)-... 

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