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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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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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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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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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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Flexible single-crystalline semiconductors used in high-performance micro- and macro-electronics have been intensely studied in recent years.  Thin-film transistors using single crystalline silicon, ...
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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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Optoelectronic devices that use very thin single-crystalline inorganic semiconductor films as phonon-absorbing layers in combination with non-lattice optical cavities are provided.
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Switches for electromagnetic radiation, including radiofrequency switches and optical switches, are provided. Also provided are methods of using the switches. The switches incorporate layers of high q...
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Piezoresistive composite materials comprising electrically conductive particles in a polymeric phase change material are provided. Also provided are strain sensors incorporating the composites and met...
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Composite materials comprising electrically conductive particles in a form-stable phase change materials (PCMs) are provided. Also provided as radiation sensors incorporating the composites and method...
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Stretchable high frequency transmission lines and high-frequency filters comprising the transmission lines are provided. The transmission lines provide low power loss, even at microwave and millimeter...
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Tandem solar cells comprising two or more solar cells connected in a solar cell stack via pn diode tunnel junctions and methods for fabricating the tandem solar cells using epitaxial lift off and tran...
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Superlattice structures composed of single-crystal semiconductor wells and amorphous barriers are provided. Also provided are methods for fabricating the superlattice structures and electronic, optoel...
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Radiation detectors based on high electron mobility transistors (HEMTs) are provided. Methods for detecting ultraviolet radiation using the HEMTs are also provided. The transistors are constructed fro...
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