A5056407745- Photonic and Optical Devices
- Liquid Crystal Research Advancements
- Ferroelectric and Piezoelectric Materials
- Advanced Fiber Optic Sensors
- Plasmonic and Surface Plasmon Research
- Optical Network Technologies
- Multiferroics and related materials
- Metamaterials and Metasurfaces Applications
- Neural Networks and Reservoir Computing
- Electrowetting and Microfluidic Technologies
- Electrophoretic Deposition in Materials Science
- Biosensors and Analytical Detection
- Catalysis and Oxidation Reactions
- Nonlinear Dynamics and Pattern Formation
- Antenna Design and Optimization
- Polydiacetylene-based materials and applications
- Advanced Biosensing Techniques and Applications
- Photonic Crystals and Applications
- Advanced Antenna and Metasurface Technologies
- Energy Harvesting in Wireless Networks
- Molecular spectroscopy and chirality
- Optical and Acousto-Optic Technologies
- Dielectric properties of ceramics
- Conducting polymers and applications
- Electronic and Structural Properties of Oxides
Wright-Patterson Air Force Base
2017-2023
Azimuth (United States)
2018-2023
University of Dayton
2013-2018
U.S. Air Force Research Laboratory Materials and Manufacturing Directorate
2017-2018
United States Air Force Research Laboratory
2018
A crystalline organic shell provides a 650 times increase in spontaneous polarization nanoscale BaTiO<sub>3</sub> core–shell superparticles.
Colloidal suspensions of ferroelectric BaTiO<sub>3</sub> nanoparticles act as a dispersible polarized interface that can influence the selectivity non-faradaic reactions.
Abstract The cholesteric liquid crystal phase at or near normal incidence selectively reflects circularly polarized light matching the handedness of helicoidal superstructure. At large angles incidence, both senses are reflected over a certain wavelength range. Stabilizing with low concentrations polymer network that maintains structural chirality allows pitch (and accordingly, selective reflection) to be adjusted an electric field. Here, behavior these stabilized crystals is investigated...
BaTiO3 ferroelectric nanoparticles have provided benefits to numerous liquid crystal applications, while the chemistry of these nanocolloids was not fully understood. In this paper, infrared absorption spectra reveal that are more than in heptane with an oleic acid surfactant as previously believed. It is shown ball-milling plays a bigger role just top-down approach for creating nanoparticles; it also means mechanochemical synthesis. This paper demonstrates synthesis responsible converting...
The modern-day resurgence of machine learning has encouraged researchers to revisit older problem spaces from a new perspective. One promising avenue been implementing deep neural networks aid in the simulation physical systems. In field optics, densely connected able mimic wave propagation have recently constructed. These diffractive (D2NN) not only offer insights into propagation, but provide novel tool for investigating and discovering multi-functional elements. this paper, we derive an...
Nanoscale $\mathrm{BaTi}{\mathrm{O}}_{3}$ particles $(\ensuremath{\approx}10$ nm) prepared by ball-milling a mixture of oleic acid and heptane have been reported to an electric polarization several times larger than that for bulk $\mathrm{BaTi}{\mathrm{O}}_{3}$. In this work, detailed local, intermediate, long-range structural studies are combined with spectroscopic measurements develop model structure these materials. The x-ray reveal large Ti off-centering as the key factor producing...
The recent advent of diffractive deep neural networks or D 2 NNs has opened new avenues for the design and optimization multi-functional optical materials; despite effectiveness NN approach, there is a need making these as well algorithms more general computationally efficient. work demonstrated in this paper brings significant improvements to both areas by introducing an algorithm that performs inverse on fully nonlinear network - assisted adjoint sensitivity analysis which we term (DNA) ....
Our research demonstrates the design and fabrication of a biosensor based on tapered optical fiber. The fiber is biconically to diameter approximately 7 μm, which allows evanescent field propagating light interact with molecules attached surface. This sensing platform capable fast, continuous, specific, sensitive, label-free molecular detection in aqueous phase. Detection demonstrated across multiple fibers, individual fibers are reusable. system described previously has been modified for...
This study focuses on the design, fabrication and characterization of a tapered optical fiber platform for label-free detection aqueous gaseous biomolecules. Single mode fibers were to diameter approximately 10 microns, this surface was functionalized with biomolecules (antibody) analytes. Molecular binding changes refractive index thickness biolayer, which interacts propagating light, causing measureable phase shift in output.
Nanoscale BaTiO3 particles (approximately 10 nm) prepared by ball-milling a mixture of oleic acid and heptane have been reported to an electric polarization several times larger than that for bulk BaTiO3. In this work, detailed local, intermediate, long-range structural studies are combined with spectroscopic measurements develop model structure these materials. The X-ray reveal large Ti off-centering as the key factor producing spontaneous in nanoparticles. Temperature-dependent lattice...
Our study examines the transmission characteristics of bi-tapered optical fibers, i.e. fibers that have a tapered down and up span with waist length separating them. The applications to aqueous vapor phase biomolecular sensing demand high sensitivity. A fiber platform is suited for label-free detection can be optimized by modification length, diameter surface properties region. We developed sensitive method based on interference two or more modes we demonstrate our sensitivity order...
The coherent control of cooperative spontaneous emission from two identical non-overlapping three-level atoms in the V-configuration located within a photonic band gap (PBG) material with resonant frequencies near upper edge PBG and confined to region small comparison their radiation wavelengths but still greater than atomic sizes is investigated. dependencies effects which photon emitted by one atom reabsorbed other on inter-atomic separation, initial state two-atom system, strength driving...
Abstract not Available.