Electronic waste management remains an ongoing challenge both domestically and abroad. Scrap components of electronics such as computers, cellphones and refrigerators contain high amounts of heavy met...
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Photodetectors convert light signals into electrical signals and are indispensible components in most optoelectronic applications. These devices comprise various designs and materials. In recent years...
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Photoreceptors are specialized cells that capture and convert light into signals that can be processed by the retina and visual centers of the brain. Supportive cells called the retinal pigment epithe...
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Diamond is considered a good material candidate for power electronics, offering reliability, low weight and power switching efficiency. Single-crystalline diamond (SCD) has the best overall properties...
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Distributed Bragg reflectors (DBRs) are found in photodetectors, solar cells and other optical sensors. Stacks of DBRs are incorporated in vertical-cavity surface emitting lasers (VCSELs), which are a...
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Conventional light-emitting diodes (LEDs) are made of an upper ‘p-type’ layer, a middle ‘intrinsic region’ and a bottom ‘n-type’ layer. Such layered structures are called PIN diodes. Curre...
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During electrocorticography (ECoG), electrodes are placed directly on the exposed surface of the brain or spinal cord to record electrical signals. The practice is used to conduct neuroscience researc...
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Fast, flexible electronics operating at radio frequencies (greater than 1 GHz) are attractive because of their versatility, power savings and wide applicability. Uses include wireless and high-speed c...
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Photodetectors based on hydrogen-doped, single-crystalline germanium, including waveguide integrated photodetectors for photonic chip applications are provided. Hydrogen doping provides the single-cry...
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P-N diodes that include p-type doped diamond and devices, such as p-n-p heterojunction bipolar transistors, that incorporate the p-n diodes are provided. In the p-n diodes, the diamond at the p-n junc...
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Blue and UV light-emitting diodes (LEDs) are key to modern, energy-saving lighting and are used in a range of applications including efficient home, farm and building lighting, high-speed networking, ...
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Light-emitting devices having a multiple quantum well (MQW) diode structure and methods of making and using the devices are provided. The devices include aluminum nitride/aluminum oxide bilayers on th...
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Future advances in semiconductor electronics for computers will require three-dimensional (3-D) integrated circuits that are not limited by the physics of thin film processing. In addition, flexible e...
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Silicon is a relatively inexpensive material for making integrated power amplifiers for communications devices such as cell phones; however, these power amplifiers are generally limited to low power a...
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PIN diodes are semiconductor devices that include an undoped intrinsic semiconductor region between the p-type and n-type regions. These diodes are commonly integrated as photodetectors on silicon CMO...
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Flexible transistors and electronic circuits incorporating the transistors are provided. The flexible transistors promote heat dissipation from the active regions of the transistors while preserving t...
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Photoreceptor scaffolds that can be used for transplantation of organized photoreceptor tissue, with or without retinal pigment epithelial cells, which may improve grafted cell survival, integration, ...
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UW-Madison researchers have developed photoreceptor scaffolds that can be used for transplantation of organized photoreceptor tissue, with or without retinal pigment epithelial cells, which may improv...
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Thin-film transistors often use a single-crystal layer of silicon semiconductor attached to a flexible plastic substrate to allow flexibility in the electronics. However, transistors using some types ...
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UW-Madison and University of Chicago researchers have developed a method for directed self-assembly of block copolymer films that relies on obtaining the correct balance of surface energies for the te...
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The demand for smaller wireless communication devices that use less power is growing. In particular, radio frequency identification (RFID) systems require small, low-power transmitters to label or “...
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Semiconductor deep-ultraviolet (DUV) light-emitting diodes (LEDs) operating at sub-250 nm wavelengths are of interest due to their applications in areas such as sterilization, biosensing, medical trea...
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Silicon is a major component in semiconductors due to its good electrical properties, reasonable cost and manufacturability. Zinc oxide is promising as a semiconductive material because it has a large...
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Patterning methods for forming patterned device substrates are provided. Also provided are devices made using the methods. The methods utilize photoresist features have re-entrant profiles to form a s...
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Improvements in technologies such as cell phones, laptops and small digital electronics are the result of the increasing capability of electronics and photonics. However, there is a continuing need fo...
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