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Patent • #US11798844B1. A method is provided for making gratings of gold or other metal in silicon substrates. The disclosed method may achieve high aspect ratios. According to the disclosed method, a silicon wafer is through-etched. A seed layer of metal is vapor-deposited on one side of the wafer, and a layer...

Patent • #US10505031B1. A high current density, low contact resistance contact for wide bandgap (WBG) or ultra-wide bandgap materials (UWBG) is disclosed. The contact is lithographically formed so that a total perimeter length of the contact structure is at least twice the length of the side of a contact pad closest to...

Patent • #US9086429B1. A light-pulse atomic interferometry (LPAI) apparatus is provided. The LPAI apparatus comprises a vessel, two sets of magnetic coils configured to magnetically confine an atomic vapor in two respective magneto-optical traps (MOTs) within the vessel when activated, and an optical system configured to irradiate the atomic vapor within the...

Patent • #US8941053B1. An inertial sensing system includes a magneto-optical trap (MOT) that traps atoms within a specified trapping region. The system also includes a cooling laser that cools the trapped atoms so that the atoms remain within the specified region for a specified amount of time. The system further includes a...

Patent • #US9499699B1. The present invention relates to solar absorptive coatings including a ceramic material. In particular, the coatings of the invention are laser-treated to further enhance the solar absorptivity of the material. Methods of making and using such materials are also described.

Patent • #US8451877B1. Tailored doping of barrier layers enables balancing of the radiative recombination among the multiple-quantum-wells in III-Nitride light-emitting diodes. This tailored doping enables more symmetric carrier transport and uniform carrier distribution which help to reduce electron leakage and thus reduce the efficiency droop in high-power III-Nitride LEDs. Mitigation of the...

Patent • #US11434551B1. The present disclosure is directed to novel high entropy alloys, including refractory high entropy alloys, and methods of selecting high entropy alloys and refractory high entropy alloys with select nuclear application predetermined properties.

Patent • #US12331384B1. The present disclosure is directed to novel high entropy alloys, including refractory high entropy alloys, and methods of selecting high entropy alloys and refractory high entropy alloys with select nuclear application predetermined properties.

Patent • #US9196788B1. Ultraviolet light-emitting diodes with tailored AlGaN quantum wells can achieve high extraction efficiency. For efficient bottom light extraction, parallel polarized light is preferred, because it propagates predominately perpendicular to the QW plane and into the typical and more efficient light escape cones. This is favored over perpendicular polarized light...

Patent • #US8408066B1. A shaker assembly for vibration testing includes first and second shakers, where the first shaker includes a piezo-electric material for generating vibration. A support structure permits a test object to be supported for vibration of the test object by both shakers. An input permits an external vibration controller to...

Patent • #US10304977B1. A method, system and apparatus including a device cell having a top side, a bottom side and opposing side walls. A passivation layer is formed along the top side, the bottom side and opposing side walls of the device cell. The passivation layer serves to passivate the device cell...

Patent • #US9580541B1. The present invention relates to functionalized polymers including a poly(phenylene) structure. In some embodiments, the polymers and copolymers of the invention include a highly localized concentration of acidic moieties, which facilitate proton transport and conduction through networks formed from these polymers. In addition, the polymers can include functional moieties,...

Patent • #US9685765B2. A new monolithic resonator metasurface design achieves ultra-high Q-factors while using only one resonator per unit cell. The metasurface relies on breaking the symmetry of otherwise highly symmetric resonators to induce intra-resonator mixing of bright and dark modes (rather than inter-resonator couplings), and is scalable from the near-infrared to...

Patent • #US8344553B1. A method and concomitant apparatus for generating pulses comprising providing a laser light source, disposing a voltage electrode between ground electrodes, generating laser sparks using the laser light source via laser spark gaps between the voltage electrode and the ground electrodes, and outputting pulses via one or more insulated...

Patent • #US8193962B1. Piecewise conversion of an analog input signal is performed utilizing a plurality of relatively lower bit resolution A/D conversions. The results of this piecewise conversion are interpreted to achieve a relatively higher bit resolution A/D conversion without sampling frequency penalty.

Patent • #US10260865B1. The present invention relates to a metallographic system including a measurement module configured to provide precise differential measurements of a sample after serial sectioning, as well as methods of employing such a module. In particular example, the measurement module provides differential measurement(s) without contacting the surface of a sample,...

Patent • #US10371598B1. The present invention relates to an apparatus for testing a bearing, as well as systems including such an apparatus. In one instance, the apparatus allows for torsional losses of a bearing to be determined in a highly sensitive manner. Results can be determined in a controlled environment, as the...

Patent • #US10473687B1. A microelectromechanical systems (MEMS) accelerometer that has high sensitivity to motion along the z axis is discussed. The device includes two symmetrical sets of bilateral, diametrically opposed high aspect ratio flexures that tether a movable proof mass to the frame of the device. The flexures are designed in such...

Patent • #US12615021B1. A radio frequency (RF) switch employing differential signal cancellation is disclosed. The differential RF switch enables high isolation and extremely small size by employing cascode current steering within a differential switching amplifier. Unlike series RF switches, isolation with the differential RF switch is limited by device mismatch, not switch...

Patent • #US9209766B1. An amplifier circuit in a multi-chip module includes a charge to voltage converter circuit, a voltage amplifier a low pass filter and a voltage to current converter. The charge to voltage converter receives a signal representing an electrical charge and generates a voltage signal proportional to the input signal....

Patent • #US11021391B2. The present invention relates to glass composites, including filled glass composites and uses thereof. In particular examples, the composites provide improved thermal expansion characteristics. Also described are methods of forming such composites, such as by adding a particle filler to a glass mixture.