In accordance with the invention, features can be directly imprinted into the surface of a solid substrate. Specifically, a substrate is directly imprinted with a desired pattern by the steps of providing a mold (20) having a molding surface (21) to imprint the pattern, disposing the molding surface adjacent or against the substrate (24) surface (25) to be imprinted, and irradiating the substrate surface with radiation to soften or liquefy the surface. The molding surface is pressed into the softened or liquefied surface to directly imprint the substrate. The substrate can be any one of a wide variety of solid materials such as semiconductors, metals, or polymers. In a preferred embodiment the substrate is silicon, the laser is a UV laser, and the mold is transparent to the UV radiation to permit irradiation of the silicon workpiece through the transparent mold. Using this method, applicants have directly imprinted into silicon large area patterns with sub-10 nanometer resolution in sub-250 nanosecond processing time. The method can also be used with a flat molding surface to planarize the substrate.

Laser assisted direct imprint lithography

In accordance with the invention, an article comprising a nanoscale surface pattern, such as a grating, is provided with a nanoscale patterns of reduced edge and/or sidewall roughness. Smooth featured articles, can be fabricated by nanoimprint lithography using a mold having sloped profile molding features. Another approach uses a mold especially fabricated to provide smooth sidewalls of reduced roughness, and a third approach adds a post-imprint smoothing step. These approaches can be utilized individually or in various combinations to make the novel articles.

Articles Comprising Nanoscale Patterns With Reduced Edge Roughness and Methods of Making Same

The present invention provides an integrated self-contained lighting module which can be used on its own, or in conjunction with other modules to produce white light, or light of any other colour within the colour spectrum. Each module comprises one or more light-emitting elements, a drive and control system, a feedback system, thermal management system, optical system, and optionally a communication system enabling communication between modules and/or other control systems. Depending on the configuration, the lighting module can operate autonomously or its functionality can be determined based on either or both internal signals and externally received signals.

Integrated Modular Light Unit

System and method for selectively applying electrical energy to structures within or on the surface of a patient's body and controlling the flow of an electrically conductive fluid from the application site to provide or maintain a desired operating condition of the electrosurgical device. An electrosurgical probe is in communication with a fluid transport apparatus through a fluid transport lumen having an opening at an end proximate the application site and disposed proximate the electrosurgical probe. A controller in communication with the fluid transport apparatus provides control signals to the fluid transport apparatus in response to at least one operating parameter associated with the system. Based on the received control signals, the fluid transport apparatus adjusts a flow rate of the electrically conductive fluid at the application site through the fluid transport lumen in response to at least one operating parameter associated with the system.

Electrosurgical system with suction control, apparatus, system and method

A solid state sub-nanometer-scale electron beam emitter comprising a multi-layered structure having a nano-tip electron emitter and tunnel emission junction formed on substrate, an initial electron beam extraction electrode, a “nano-sandwich Einzel” electrode, and a topmost protective layer.

Integrated sub-nanometer-scale electron beam systems

A method is provided for creating additional takeoff and landing slots at airports that are constrained from operation by curfews that limit the hours when aircraft can operate. Aircraft may be moved on the ground to and from takeoff and landing runways without operation of the aircraft's engines entirely by tow vehicles, aircraft transfer apparatus, or non-engine drive means so that aircraft are ready to take off at the expiration of an airport's morning curfew. Aircraft may also land just prior to start of an airport's evening curfew and be moved to parking destinations entirely by tow vehicles, aircraft transfer apparatus, or non-engine drive means without operating engines. Airport capacity may be increased without requiring infrastructure expansion.

Method for slot creation at an airport

The Power Chips technology employs a gap of 4–10 nanometers in a gap diode to allow for efficient thermal conversion with very low thermal leakage. The design ΔT is on the order of 400 degrees single stage, with operation possible from 1 K to 1600 K, depending on configuration and meeting engineering challenges. Efficiency is projected to be in the range of 70% of Carnot‐defined maximum. RD thin film and packaging issues remain. The technology is anticipated to be ideal in terms of size, weight, efficiency, and reliability. Power Chips can be packaged identically as conventional thermoelectrics making them a drop‐in replacement in many cases including RTGs. Applications for Power Chips include RTGs as well as thermal conversion from a waste heat stream or solar‐thermal conversion. This paper was originally published without all of the proper acknowledgments.

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Power Chips for Efficient Energy Conversion

A method for designing and operating an aircraft nose landing gear wheel-mounted electric taxi system moves aircraft with optimal torque during a broad range of ground travel conditions. Electric taxi system components may be sized to produce optimal ground travel torque to move aircraft during the majority of aircraft ground travel conditions and operated to produce a maximum or breakaway torque to move the aircraft with the electric taxi system when a higher level of torque is required. Turning the nose landing gear wheels to a selected angle or through a range of angles simultaneously as the electric taxi system is operated produces the breakaway torque required to get the aircraft moving. When lower torque is needed, the aircraft may be driven with the nose landing gear wheels parallel to the longitudinal axis to produce optimal torque for electric taxi system-powered aircraft ground travel.

Aircraft electric taxi system design and operation

An integrated monitoring system and method are provided with the capability for monitoring ground surface movements of electric taxi drive system-driven aircraft, ground vehicles and personnel, and objects within airport ramp areas. Monitoring units may include a scanning LiDAR device with and without cameras or other sensing devices to transmit meshed real time encrypted data from multiple locations to an artificial intelligence-based processing system that generates a visual display of the monitored area for communication to aircraft cockpits and locations responsible for controlling ramp operations. Monitoring units may be mounted in single or multiple exterior locations on aircraft and/or in locations on ground vehicles and equipment, ground personnel, and the airside portion of an airport terminal.

Airport Ramp Surface Movement Monitoring System

A method is provided for improving overall air quality at airports during ground operations that includes providing a plurality of aircraft landing and taking off from an airport with onboard drive means controllable to move the aircraft on the ground without reliance on aircraft main engines or external tow vehicles while significantly minimizing operating time of aircraft engines after landing and/or prior to takeoff. As the number of aircraft equipped with onboard drive means for ground movement increases, levels of undesirable engine exhaust components in airport exterior ambient air, in airport ground facilities interior air, and in geographical areas surrounding the airport decrease as a result of the replacement of both the aircraft engines and the operation of external tow vehicles by the onboard drive means. Aircraft engines are not started until the aircraft reaches a takeoff runway where engine exhaust emissions are more readily dissipated by the taxiing aircraft.

Isaiah W. Cox

Papers

Method for slot creation at an airport

Power Chips for Efficient Energy Conversion

Aircraft electric taxi system design and operation

Airport Ramp Surface Movement Monitoring System

Method for improving overall airport air quality during aircraft ground operations