Award Data

ABSTRACT:Cognitive skills/capabilities are important for the military personnel to fulfill tasks and to ensure mission efficiency and success. In the past decade, there are abundant researches suggesting that non-invasive brain stimulation via transcranial direct current stimulation (tDCS) holds great promise to enhance a soldier's cognitive performances. Although models to predict the tDCS curren ...

ABSTRACT:Modulator linearity and efficiency, in addition to bandwidth, are important parameters in characterizing a modulator. In general, improving modulation efficiency is highly desirable since higher modulation efficiency allows lower RF signal to impose equivalent change in the optical beam whereas improved linearity increases the dynamic range available to analog signals conveyed and process ...

ABSTRACT:Hyperspectral imaging is a technique used to simultaneously capture spatial and spectral information of an object scene, making it a valuable technique for applications in remote sensing and military battlefield environments. In the case of long wave infrared (LWIR) imaging, a hyperspectral approach offers an opportunity to improve upon the detection capabilities of standard broadband sen ...

ABSTRACT: Under the proposed effort, PSI will leverage a novel pmmW imaging technology developed under a prior Navy program to realize the low size, weight, and power sensors required for UAV implementation. This technology is based on an optical upconverted distributed aperture technology that can make use of the full aperture of the aircraft thereby maximizing achievable resolution. This sensor ...

ABSTRACT:In this phase II effort we will commercialize the high speed, high power, modified uni-traveling carrier (MUTC) photodiodes (PDs). To this end, we will develop reliable packaging solutions for discrete PDs, PD arrays, balanced PDs and waveguide based PDs. We will also transition the chip fabrication process for continuous, high volume supply of quality MUTC PD chips. In the first six mont ...

In this proposal, Alphasense, Inc. details the development of a novel microwave NDE sensor for defect inspections in silicon nitride bearing balls. The key innovations of this proposal include the following: a) the use of the spherical bearing ball as a dielectric resonator, thus enabling us to correlate the resonance characteristics of the bearing ball with various defects; b) the measurements in ...

This STTR Phase I proposal is aimed to develop high induction soft magnetic nano-composites (SMNC) capable of high power operations at frequency between 20 kHz to 10 MHz. With Spectrum Magnetics’ proprietary technique, leveraged with research excellence in magnetic materials at the University of Delaware, we will develop magnetic nano-entities of large aspect ratio which effectively eli ...

A novel methodology is proposed for the integration of nanomaterials into structural composite materials, to engineer multi-spectrum (microwave, IR, and optical) electromagnetic properties.   The process is general and a wide range of EM properties can be achieved, such as absorption, reflection, switchable properties, etc.  It is also possible to engineer multiple properties in the same struct ...

Advances in fabrication technology have made it possible to prodce features that are smaller than the wavelength of light. As such a new class of optical devices based on submicron periodic structures has emerged and is referred to as photonic crystals (PhC) or photonic band gap devices (PBGs). Preliminary research indicates that these devices will be capable of performing a wide variety of functi ...

The objectives of the proposed effort are to demonstrate the use of computational fluid dynamics (CFD) as a design tool for reducing engine development time and cost, to reduce fuel nozzle-combustor test requirements, and to demonstrate the capability of CFD to accelerate the incorporation of promising, actively controlled fuel nozzles and combustors into aircraft engines. These overall objectives ...