David T. Crouse
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View article: On the Nature of Discrete Space-Time Part 2: Special Relativity in Discrete Space-Time
On the Nature of Discrete Space-Time Part 2: Special Relativity in Discrete Space-Time Open
In this paper -- Part 2 of our series on discrete spacetime -- we first provide a review of the previously published Part 1 that included the first important steps in the development of a new model of discrete spacetime (DST): the Isotropi…
View article: Computational design of a sensitive, selective phase-changing sensor protein for the VX nerve agent
Computational design of a sensitive, selective phase-changing sensor protein for the VX nerve agent Open
The VX nerve agent is one of the deadliest chemical warfare agents. Specific, sensitive, real-time detection methods for this neurotoxin have not been reported. The creation of proteins that use biological recognition to fulfill these requ…
View article: Recent advance in phase transition of vanadium oxide based solar reflectors and the fabrication progress
Recent advance in phase transition of vanadium oxide based solar reflectors and the fabrication progress Open
Vanadium dioxide (VO2) as a phase-change material controls the transferred heat during phase transition process between metal and insulator states. At temperature above 68C, the rutile structure VO2 keeps the heat out and increases the IR …
View article: Design, fabrication, and spectral characterization of temperature-dependent liquid crystal-based metamaterial to tune dielectric metasurface resonances
Design, fabrication, and spectral characterization of temperature-dependent liquid crystal-based metamaterial to tune dielectric metasurface resonances Open
Tunable dielectric meta-surface nanostructures offer incredible performance in optical application due to their extraordinary tunability of the polarization and engineering the dispersion of light with low loss in infrared range. In this a…
View article: Design, fabrication, and spectral characterization of TM-polarized metamaterials-based narrowband infrared filter
Design, fabrication, and spectral characterization of TM-polarized metamaterials-based narrowband infrared filter Open
Hyperbolic Metamaterials, as a non-magnetic anisotropic artificial structure, show metal properties in one direction and dielectric behavior in orthogonal directions. The proposed hyperbolic metamaterial filter in this project is designed …
View article: Babinet's principle and saturation of the resonance frequency of scaled-down complementary metasurfaces
Babinet's principle and saturation of the resonance frequency of scaled-down complementary metasurfaces Open
It has been previously demonstrated that the resonant frequency of the Split Ring Resonator (SRR) reaches a saturation value when its size is continuously scaled down, and at the same time, the resonance is attenuated. Now, it is demonstra…
View article: Helical Bragg gratings filter for orbital angular momentum wave
Helical Bragg gratings filter for orbital angular momentum wave Open
Effective filtration of orbital angular momentum (OAM) modes is essential to achieve multiple-channel data transmission in an OAM fiber for telecommunication applications. The nature of helical-shaped OAM wave propagation possessing many t…
View article: On the Nature of Discrete Space-Time: Part 1: The distance formula, relativistic time dilation and length contraction in discrete space-time
On the Nature of Discrete Space-Time: Part 1: The distance formula, relativistic time dilation and length contraction in discrete space-time Open
In this work, the relativistic phenomena of Lorentz-Fitzgerald contraction and time dilation are derived using a modified distance formula that is appropriate for discrete space. This new distance formula is different than the Pythagorean …
View article: On the Nature of Discrete Space-Time: Part 1: The distance formula, relativistic time dilation and length contraction in discrete space-time
On the Nature of Discrete Space-Time: Part 1: The distance formula, relativistic time dilation and length contraction in discrete space-time Open
In this work, the relativistic phenomena of Lorentz-Fitzgerald contraction and time dilation are derived using a modified distance formula that is appropriate for discrete space. This new distance formula is different than the Pythagorean…
View article: Focused apodized forked grating coupler
Focused apodized forked grating coupler Open
The forked grating coupler (FGC) is an optical vortex interface for silicon photonics. Using the structure of a Bragg grating coupler with a calculated forked hologram, the FGC couples optical vortex modes into confined waveguide modes of …
View article: Solar Desalination: High Solar Desalination Efficiency Achieved with 3D Cu<sub>2</sub>ZnSnS<sub>4</sub> Nanosheet‐Assembled Membranes (Adv. Sustainable Syst. 10/2017)
Solar Desalination: High Solar Desalination Efficiency Achieved with 3D Cu<sub>2</sub>ZnSnS<sub>4</sub> Nanosheet‐Assembled Membranes (Adv. Sustainable Syst. 10/2017) Open
Plasmonic structures allow for light to be trapped into subwavelength units, suggesting benefits for light harvesting and related applications. In article number 1700064, Yuanqiang Song and co-workers introduce a monocrystalline Cu2ZnSnS4 …
View article: High Solar Desalination Efficiency Achieved with 3D Cu<sub>2</sub>ZnSnS<sub>4</sub> Nanosheet‐Assembled Membranes
High Solar Desalination Efficiency Achieved with 3D Cu<sub>2</sub>ZnSnS<sub>4</sub> Nanosheet‐Assembled Membranes Open
Plasmonic structures are gaining tremendous interest due to their unique capability to trap light into subwavelength units, beneficial for high efficient light harvesting and related applications. Here, a plasmonic structure realized on a …
View article: Relativistic Time Dilation and Length Contraction in Discrete Space-Time using a Modified Distance Formula
Relativistic Time Dilation and Length Contraction in Discrete Space-Time using a Modified Distance Formula Open
In this work, the relativistic phenomena of Lorentz contraction and time dilation are derived using a modified distance formula appropriate for discrete space. This new distance formula is different than Pythagoras's theorem but converges …
View article: On the nature of discrete space-time: The atomic theory of space-time and its effects on Pythagoras's theorem, time versus duration, inertial anomalies of astronomical bodies, and special relativity at the Planck scale
On the nature of discrete space-time: The atomic theory of space-time and its effects on Pythagoras's theorem, time versus duration, inertial anomalies of astronomical bodies, and special relativity at the Planck scale Open
In this work, resolutions will be given for commonly stated problems associated with a model that assumes that space and time are discretized (i.e., atomized). This model is in contrast to the continuous space-time model that is used in al…
View article: The lattice world, quantum foam and the universe as a metamaterial
The lattice world, quantum foam and the universe as a metamaterial Open
This work describes the gravitational effects of an ordered array of Planck masses, arrayed in a cubic lattice with a lattice constant equal to the Planck length. This work adds the property of spatial order to the concept of quantum foam …
View article: ANISOTROPIC ZERO INDEX MATERIAL: A METHOD OF REDUCING THE FOOTPRINT OF VIVALDI ANTENNAS IN THE UHF RANGE
ANISOTROPIC ZERO INDEX MATERIAL: A METHOD OF REDUCING THE FOOTPRINT OF VIVALDI ANTENNAS IN THE UHF RANGE Open
In this work, an anisotropic zero index material is designed for use in Vivaldi antennas.The metasurface structures are placed within the aperture of a Vivaldi antenna to improve the directivity and gain of the emitted radiation.The range …