Abstract:In this program, we will develop a breakthrough technology that will enable wafer-scale epitaxial lift-off (ELO) of GaN power device heterostructures from low-dislocation-density bulk GaN substrates. This technology will be used to provide a low-cost vertical junction field effect transistors… more
Abstract:High performance LWIR detectors are highly needed. In order to image from long distance, it is important that imagers have high sensitivity, high resolution, and very low dark currents. This leads to technical goals of having low noise, low dark current in small size pixels in large arrays. While… more
Abstract:This proposal describes development of a new type of quantum-cascade laser for use as a local oscillator at frequencies above 2 THz. The THz source described is a single chip solution that operates at room temperature. In addition, a mechanism for wide tuning (2-4.7 THz) is described that requires… more
Abstract:High performance infrared detectors in the LWIR regime are highly needed in a number of missile defense missions. In order to image targets from long distance, it is important that imagers have high sensitivity and high resolution. This leads to technical goals of having low noise, low dark current… more
Abstract:Infrared countermeasure and standoff chemical detection applications require a light source with high power output, good beam quality, and a wide tuning range. There are a limited number of viable mid-infrared (3-5 micron wavelength) solutions that can provide these features in a compact and power… more
Abstract:Surface emitting semiconductor lasers eliminate the necessity for facet cleaving and allow for wafer scale testing, which increase the manufacturing yield and reduces the cost. However, in the mid-infrared, surface emitting semiconductor lasers are significantly underdeveloped compared to edge… more
Abstract:Existing ultraviolet laser diodes with wavelengths much shorter than 365 nm suffer from poor performance. This is partially due to limited research in this area, but a large part is also due to material and processing issues unique to deep UV lasers. New approaches to achieving 340 nm III-Nitride… more
Abstract:Thomas Jefferson National Accelerator Facility (JLAB) currently uses low efficiency klystrons, with a system of 340 klystrons approaching an MTBF of 170,000 hours. But over the lifetime of the project 60% of the tubes have been replaced, giving an MTBF for a single tube of about five to six years. … more
Abstract:S-Band vacuum loads at the SLAC linac are encountering operational problems now that they have to operate under the stringent requirements of the LCLS: 50 MW peak power, 6 kW average power, and extremely tight phase stability for the linac. Failure mechanisms have been studied which suggest an RF… more
Abstract:Detecting light at the single photon level is a fundamental measurement function that is useful in a wide variety of applications, including such diverse fields as quantum communications, laser ranging, and biological spectroscopy. Avalanche photodiode based single-photon detectors are convenient… more
Abstract:The proposed project will undertake the research, design, and development of key concepts and technologies for a very-low-voltage high-speed semiconductor electro-optic modulator. Low-voltage high-speed optical intensity modulators with voltage 100GHz, and low optical loss<65%.
Abstract:This Small Business Innovation Research (SBIR) Phase I project will study the feasibility of 1) crowd-sourcing smart-phones about street parking availability, and 2) navigating a driver to an available parking slot. The innovation is the Intelligent Parking Assistant (IPA), a software application… more
Abstract:In order to raise the inlet gas temperatures to improve thermal efficiency of industrial gas turbines (IGT), turbine blade materials are required to have superior creep rupture resistance. Ni-base single crystal (SX) blades have higher creep strength in comparison with directionally solidified… more
Abstract:QuesTek proposes to apply its Materials By Design approach to design a high performance, low cost soft magnetic material capable of achieving significant cost savings to approach the DOE motor cost target of $4.7/kW in 2020. In order to meet the ambitious motor targets, traction motors in… more
Abstract:The overall goal of the Phase II program is to move QuesTek"s new stainless bearing steel alloy development efforts from the Phase I prototype scale, to intermediate- and full-scale alloy production. The Phase II program will culminate with a demonstration of the new alloy"s properties at… more
Abstract:Historically, materials discovery has been a costly and slow process that resulted either accidently from trial-and-error Edisonian experimentation or more deliberately based on the intuition gained from the trial-and-error approach. The time and cost needed to discover new materials using current… more
Abstract:In this STTR program, QuesTek Innovations LLC, a leader in the field of computational materials design, proposes to expand its computational Materials by Design technology by developing a thermodynamics-based"design toolkit"that enables the subsequent design and development of novel… more
Abstract:This research work aims to demonstrate the feasibility of applying a novel Acoustography technique for the semi-quantitative evaluation of bond shear strength and assessment of adhesive bond quality in airframe sandwich structures. The proposed approach will utilize thermal and mechanical excitation… more
Abstract:ABSTRACT: There is an urgent Air Force need for an advanced cycle turbo-fan for UAV applications. Spytek Aerospace proposes a 2-ITB, 500 LBT turbo-fan engine equipped with ITB driven fan capable of running a generator, thru a second ITB in variable modes for additional power on demand and at high… more
Abstract:State-of-the-art oil pumps in aircraft engines deliver a volumetric flow rate proportional to the rotor speed of the high-pressure engine core, which drive the pump via the engine gearbox. In emerging aircraft platforms, the fuel and oil systems are used to cool a variety of engine and airframe… more
Abstract:PROJECT SUMMARY Prenatal alcohol exposure is the leading preventable cause of birth defects in the United States, producing an array of neurological, behavioral and physical abnormalities collectively known as fetal alcohol spectrum disorders (FASD). Earlyintervention and treatment programs have… more
Abstract:Future particle physics experiments at the high energy frontier, such as LHC, HL-LHC, ILC, CLIC or Multi-TeV Muon Collider, will all require silicon detectors capable of reconstructing charged particle trajectories with high accuracy in the presence of significant high occupancy. These experiments… more
Abstract:The Navy needs an optical repeater based upon the NGCON (MIL-PRF-64266) because the optical power loss budget on military aircraft is demanding. A bi-directional optical amplifying repeater would address the optical loss issue of connecting a fiber optic link in the aircraft network. Challenges… more
Abstract:Problems of large-scale nonlinear optimization are central to the solution of difficult and novel problems that arise from the need to distribute electric power in the most efficient and reliable way. In recognition of the importance of optimization in this area, DOE & apos;s Office of Advanced… more
Abstract:DESCRIPTION: Fucosylation plays an important role in much cellular process. Fucosylated oligosaccharides in the cell are involved in various types of biochemical recognition processes and in microbial infections, toxin entry, and cancer cells metastasis.These properties make these carbohydrates… more
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