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We have developed a microscale flexible image projection device, integrating a matrix addressable blue/green two-dimensional LED array to a multicore imaging fiber. Spatiotemporal patterns of illumination have been used to study amphibian visual system development.
We have developed a prototype cortical neural interface device for brain implantable neuroengineering application, featuring fiber optic guided all optical telemetry for neural data transmission as well as power/clock delivery to the implantable unit.
A prototype cortical neural interface microsystem has been developed for brain implantable neuroengineering applications, featuring hybrid RF (radio- frequency) inductive and IR (infrared) optical telemetries. The system is aimed at neural recording from primates by converting cortical signals to a digital stream of IR light pulses, while acquiring clock signal and electrical power through RF induction...
We report on study of optically activated functional electrical stimulation using a high efficiency microscale photovoltaic device as a neuro stimulator, integrated with a biocompatible, lossless, interference-free glass optical fiber for signal and energy transport.
We report on the incorporation of thin organic layers as part of GaN/InGaN blue light emitting diodes. The integration of two such contrasting classes of materials as electronic part of a single device structure may offer new opportunities in the design of flexible optoelectronic devices.
‘Caged’ compounds are biological molecules that are rendered inactive by a protecting (cage) group. Photocleaving of chemical bonds associated with the cage species with intense UV light results in the release of the active molecules. This technique, called flash photolysis, allows for real-time study of interacting biological molecules and typically involves the use of high intensity lasers or flash...
In vitro neuronal networks with geometrically defined features are desirable for studying long-term electrical activity within the neuron assembly and for interfacing with external microelectronic circuits. In standard cultures, the random spatial distribution and overlap of neurites makes this aim difficult; hence, many recent efforts have been made on creating patterned cellular circuits. Here,...
A compact sensor for physically sorting bio-aerosols based on fluorescence spectra excited using UV-LED arrays is presented. The optical system integrates electronics for real-time processing of spectral data and a miniaturized aerodynamic deflector for particle separation.
We report on study of GaN/InGaN-organic semiconductor heterostructures where electronic transport in planar junction structures shows electron or/and hole injection across the interfaces resulting e.g. light emission from the nitride quantum wells.
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