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The visible light communications properties of a microLED-pumped inorganic perovskite quantum dot color converter are reported. Free-space data communications at 364 Mb/s, using solely the color-converted light as the data signal optical carrier, is demonstrated.
In this paper, a tracking control scheme is proposed for optical manipulation of biological cell with unknown trapping stiffness. The requirement on the model of the trapping stiffness is eliminated in the proposed formulation and thus system identification and calibration are not needed. The unknown trapping stiffness and the uncertain dynamic parameters are estimated separately, with on-line update...
Microscopic optics and cameras are commonly used in micromanipulation or biomanipulation workstations since they provide a large spectrum of visual details and information. The visual feedback information also improves robustness to uncertainty and accuracy of micromanipulation. Among various micromanipulation systems, optical tweezers are one of the most useful instruments that utilize a focused...
Optical tweezer is a useful tool for non-contact micromanipulation tasks because it can manipulate biological cells precisely without causing damage to the cells. In many optical manipulation techniques, the measurement of the velocity of the cell is necessary. Since it is difficult to measure the velocity of the cell, the velocity information is usually obtained by differentiating the position of...
Current manipulation techniques of optical tweezers treat the position of the laser beam as the control input and an open-loop kinematic controller is designed to move the laser source. In this paper, a closed-loop robotic control method for optical tweezers is formulated and solved. While robotic manipulation has been a key technology driver in factory automation, robotic manipulation of cells or...
From our investigation of damp heat (DH)-induced degradation of the main component materials and complete CIGS devices in recent years, this paper summarizes the results on the (1) DH stability of several transparent conducting oxides deposited on glass substrates, including ZnO-based thin films, Sn-doped In2O3 (ITO), and InZnO, and (2) effectiveness of physical and chemical mitigations for ZnO. The...
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