Electrical, Electronics, and Avionics
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Briefs Physical Sciences
Designing Safer, Higher-Performance Lithium Batteries
Examining lithium metal batteries using nuclear magnetic resonance spectroscopy may help in the design of new electrolytes and anode surfaces for high-performance batteries. Read on to learn more.
Briefs Aerospace
Streamlined Microcomb Design Provides Control With The Flip of a Switch
Researchers at the University of Rochester describe new microcomb lasers they have developed that overcome previous limitations and feature a simple design that could open the door to a broad range of uses. Read on to learn more.
Briefs Photonics/Optics
Towards Greater Sensitivity: A Brief FTIR and Infrared-Based Cavity Ring Down Spectroscopy Comparative Study
Cavity Ring-Down spectroscopy (CRDS) is a newer IR absorption-based technique made possible by the use of tunable pulsed lasers. Rather than using a broadband (blackbody) emitter as is done with traditional IR techniques, a pulsed laser is tuned across wavelengths into an optical cavity.
Briefs Photonics/Optics
Fabrication and Electrical Characterization of Correlated Oxide Field Effect Switching Devices for High Speed Electronics
The response of correlated oxides to strong electric fields and their dynamics is investigated using electrical transport measurements and electronic structure studies.
Briefs Mechanical & Fluid Systems
Matrix-Free Assisted Laser Desorption Ionization Using Metal-Organic Frameworks
Matrix-assisted laser desorption/ionization (MALDI) is a soft ionization technique that is widely applied in the characterization of large biomolecules using...
Briefs Photonics/Optics
Spatial Resolution and Contrast of a Focused Diffractive Plenoptic Camera
The concept of an imaging system that captures both spatial and spectral information has existed for a while. An example of one such imaging system that encodes both...
Briefs Photonics/Optics
High-Power Broadband Multispectral Source on a Hybrid Silicon Chip
For applications in manufacturing, remote sensing, medicine, military, and fundamental science, an ideal laser would have high output power and a diffraction-limited beam. The...
Briefs Photonics/Optics
Development of Photoacoustic Sensing Platforms
In recent years, photoacoustic spectroscopy (PAS) has emerged as an attractive and powerful technique well suited for sensing applications. The development of high-power radiation sources and more...
Briefs Data Acquisition
Luminescence Materials as Nanoparticle Thermal Sensors
The purpose of this research program was to create and study novel luminescence particles (phosphors} capable of sensing and retaining the time-temperature information to which they were...
Briefs Semiconductors & ICs
Silicon Based Mid-Infrared SiGeSn Heterostructure Emitters and Detectors
Enhancing the performance of GeSn p-i-n photodiodes using gold metal nanostructures. The goal of this research project was to advance the science and technology of...
Briefs Materials
Epitaxial Growth of Rhenium with Sputtering
Epitaxial superconducting films of refractory metals are a promising new template for single crystal tunnel barriers in Josephson junction quantum bit (qubit) devices. In existing Josephson junction...
Briefs Sensors/Data Acquisition
Multifunctional Core-Shell and Nano-Channel Design for Nano-Sized Thermosensor
This work focused on developing novel nano-sized thermal sensors based on a multifunctional core/shell and nano-channel design that can be used to measure...
Articles Photonics/Optics
Stand-Off Scanning and Pointing with Risley Prisms
With the ever increasing threat of improvised explosive devices, both in the military arena and the civilian realm, there is a growing demand for technologies with the ability to detect...
Briefs Sensors/Data Acquisition
Sensing Suspicious Powders Using Noncontact Optical Methods
Suspicious powder incidents continue to be a disruptive and costly problem. In-situ assessment of suspicious powders within inorganic matrices, particularly with powders of biological...
Briefs Defense
Next-Generation Spectrometers for Rapid Analysis of Complex Mixtures
Molecules have internal motions that are characteristic of their structure and identity. These motions can be studied by spectroscopy in different regions of the...
Briefs Manufacturing & Prototyping
Tin-Based IV-IV Heterostructures Fabricated Using Molecular Beam Epitaxy
The indirect nature of the fundamental energy gap in the elemental semiconductors Si and Ge prevents the use of these materials and their alloys in laser devices. The...
Briefs Physical Sciences
Component Identification in Multi-Chemical Mixtures with Swept-Wavelength Resonant-Raman Spectroscopy
The utilization of ultraviolet resonance Raman spectroscopy for the detection and identification of chemical, biological, and nuclear hazards is of great interest due to the sensitivity and specificity afforded by this technique. Detection by means...
Briefs Physical Sciences
Diode Laser Sensor for Scramjet Inlets
The supersonic combustion ramjet (scramjet) engine is one of the more promising high-speed flight propulsion technologies. One of the reasons for this is the simplicity of the engine design, having no...
Briefs Photonics/Optics
Novel Wavelength Standards in the Near Infrared
The goal of this work was to develop a new class of portable optical frequency references based on sub-Doppler spectroscopy inside gas-filled, hollow-core photonic bandgap (PBG) optical fiber. The change in line width with core size, and narrower transitions inside a new “kagome” structured...
Briefs Photonics/Optics
Solid-State, High-Energy Lasers Based on Rare-Earth Doped Gallium Nitride
Laser-based directed-energy weapons (DEW) are important components for future Army missile defense systems. The diode-pumped, rare-earth (RE)-doped, solid-state laser is a very promising path towards achieving a DEW-sufficient level of average power from a reasonably compact...
Briefs Materials
Cluster-Assembled Soft Magnets for Power Electronics Applications
This technique uses nanocluster assembly to produce model soft magnetic materials with simpler chemical composition than existing materials and well-controlled nanostructure, and...
Briefs Photonics/Optics
Continuous-Wave Laser Diodes Based on a Novel InGaAsNSb Material System
Laser sources operating in the spectral region from 2 to 3.5 μm are in demand for ultra-sensitive laser spectroscopy, medical diagnostics, home security, industrial process monitoring, infrared countermeasures, and optical wireless communications. Currently, solid-state...
Briefs Materials
Gold-Based Nanoparticle Liquids for Electronic Applications
Electrically conductive, solventless nanoparticle liquids, consisting of gold nanoparticles chemically functionalized with large organic molecular groups, have been investigated for...
Briefs Manufacturing & Prototyping
Progress Toward Carbon-Nanotube Arrays for Probing Cells
Progress has been reported in research oriented toward the goal of fabricating arrays of interconnected single-walled carbon nanotubes (SWNTs) that could serve as probes for measuring...
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