Search Results - optics

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Embedded Active Fiber Optic Sensing Network for Structural Health Monitoring in Harsh Environments
This optical fiber based distributed sensing system is able to monitor structure health, temperature and strain of the surrounding structure simultaneously in harsh environment of high temperature (1000 C). The distributed non-destructive evaluation is achieved by an all-fiber NDE structure and is immune to EMI and high temperature. And it can detect...
Published: 11/27/2017   |   Inventor(s): Chennan Hu, Anbo Wang, Bo Dong, Cheng Ma, Zhuoxuan Li, Jianmin Gong
Category(s): Optics
Methods and Apparatus of Interferometry for Quanitative Imaging and Sensing
Interferometry is the enabling technique in numerous measurement and imaging devices. For example, nearly all modern microscopes have built-in phase contrast (PhC) microscopy and differential interference contrast (DIC) microscopy capabilities, both of which are based on interferometry and for decades has been indispensable in research and industry....
Published: 3/22/2019   |   Inventor(s): Yizheng Zhu
Category(s): Biomedical, Devices, Imaging, Optics
Additive Manufacturing of Magnetic Components
A paste based additive process is used to produce complex, multi-material, capacitive, magnetic, and resistive components. The method allows for concurrent manufacturing of components from stable magnetic and metallic pastes at low temperatures. By forming inductors and transformers with complex structures, the flux density distribution may be...
Published: 11/27/2017   |   Inventor(s): Guo-Quan Lu, William Monzel, Yi Yan
Category(s): Electrical, Optics
Methods and Apparatus of High-Sensitivity Quantitative Phase Microscopy
Quantitative phase microscopy (QPM) is a group of techniques that measure the optical path delays associated with a sample, which may be transparent, translucent or opaque. QPM systems can provide quantitative data about an object and have seen fast growing applications in a variety of fields including metrology, live cell imaging and multi-phase flow....
Published: 11/27/2017   |   Inventor(s): Yizheng Zhu
Category(s): Imaging, Optics
A Laser/Vision-Based Underwater Distance Measuring Unit
The Laser/Vision-Based Underwater Distance Measuring Unit is a low cost sensor designed to determine the relative distance to unknown objects in underwater environments. The sensor is designed to (and for) use in underwater environments when the use of acoustic-based measurement sensors is not feasible either due to price or the underwater environments...
Published: 11/27/2017   |   Inventor(s): Alexander Leonessa, Christopher Cain, Brian Boothe
Category(s): Optics
Multiple Exposure Patterning in a Single Photoresist Layer
VT researchers have developed a photolithography technique that cuts the cost of double patterning in half, simplifies single exposure photolithography, and significantly reduces diffraction distortion of complex patterns. This approach also supports higher processing throughput and greater fidelity of the smallest features. The result is the potential...
Published: 12/5/2022   |   Inventor(s): Coumba Ndoye, Marius Orlowski
Category(s): Optics
Sensor Based on Producing Long Thin Holes in Optical Fibers
This innovation consists of a novel optical fiber for use as a pressure sensing device. The optical fiber described includes a random, non-uniform array of holes along the length of the fiber created by a gas during the fiber drawing process. Sensitivity to applied load or pressure change is improved since the optical fiber experiences a large wavelength...
Published: 11/27/2017   |   Inventor(s): Gary Pickrell, Daniel Kominsky, Rogers Stolen, Jeong Kim, Anbo Wang, Ahmad Safaai-Jazi
Category(s): Communication, Chemicals, Devices, Diagnostic, Engineering, Imaging, Materials, Optics
Construction of Thin Films with Significant Nonlinear Susceptibilities Using Water Soluble, Reactive, Monomeric Chromophores
This novel scientific development introduces a new method and new materials to produce multilayered, nonlinear optical films. Potential applications include electro-optic modulators and frequency doubling devices. The materials and processing steps used result in high degree of non-centrosymmetry in the film, thus forming high net polar ordering which...
Published: 11/27/2017   |   Inventor(s): Kevin Van Cott, James Heflin, Harry Gibson, Richey Davis
Keywords(s): Materials/Films and Coatings, Materials/Other
Category(s): Materials, Chemicals, Engineering, Energy, Biomedical, Imaging, Optics, Process/Procedures, Consumer Products, Devices