Tootfinder

Large Bulk Photovoltaic Effect of Nitride Perovskite LaWN3 as Photocatalyst for Hydrogen Evolution Reaction: First Principles Calculation
Keyu An, Zhuang Qian, Haoqiang Ai, Zhichao Yu, Shuangpeng Wang, Hui Pan
https://arxiv.org/abs/2405.04132

Large Bulk Photovoltaic Effect of Nitride Perovskite LaWN3 as Photocatalyst for Hydrogen Evolution Reaction: First Principles Calculation
Bulk photovoltaic effect in noncentrosymmetric materials is a fundamental and significant property that holds potential for high-efficiency energy harvesting, such as photoelectric application and photocatalysis. Here, based on first principles calculation, we explore the electronic structure, dielectric property, shift current, and photocatalytic performance of novel nitride perovskite LaWN3. Our calculations show that LaWN3 possesses large dielectric constants and shift current. The shift cur…

Does light slowdown in dielectric media?
Vernon Cooray, Gerald Cooray, Farhad Rachidi, Marcos Rubinstein
https://arxiv.org/abs/2403.02766 https://

Does light slowdown in dielectric media?
Observations and theoretical principles indicate that electromagnetic waves, including light, propagate in dielectric media at speeds lower than those in free space, as eloquently expressed in Maxwell's equations featuring material-dependent permittivity and permeability. This study reveals that the observed slower propagation of waves in dielectric media arises from an interference between two types of waves: a forward-moving primary wave and a set of secondary waves induced by the primary wav…

Dual-Frequency Radar Wave-Inversion for Sub-Surface Material Characterization
Ishfaq Aziz, Elahe Soltanaghai, Adam Watts, Mohamad Alipour
https://arxiv.org/abs/2403.19853

Dual-Frequency Radar Wave-Inversion for Sub-Surface Material Characterization
Moisture estimation of sub-surface soil and the overlaying biomass layer is pivotal in precision agriculture and wildfire risk assessment. However, the characterization of layered material is nontrivial due to the radar penetration-resolution tradeoff. Here, a waveform inversion-based method was proposed for predicting the dielectric permittivity (as a moisture proxy) of the bottom soil layer and the top biomass layer from radar signals. Specifically, the use of a combination of a higher and a …

For 30 years, a single Japanese company called #Ajinomoto has made billions producing #dielectric #film.
Competitors have struggled to outdo them, and today Ajinomoto has more than 90% of the market in the product, which is use…

This US startup makes a crucial chip material and is taking on a Japanese giant
Federal funding is spurring US companies like Thintronics to disrupt semiconductor manufacturing. Success is far from guaranteed.

"The West Virginia House passed House Bill 4654 – removing bona fide schools, public libraries, and museums from the list of exemptions from criminal liability relating to distribution and display to a minor of obscene matter – in a 85-12 vote Friday, sending the bill to the state Senate."
The vague law would open librarians to criminal prosecution if "obscene" material is found in their library.

West Virginia House passes bill allowing prosecution of librarians
CHARLESTON — The West Virginia House of Delegates debated the merits of removing protections for public librarians and school librarians from criminal prosecution in the off chance a minor encounters books and content some consider to be obscene. The House passed House Bill 4654 – removing bona fide schools, public libraries, and museums from the […]

Hyperbolic phonon-plasmon polaritons in a hBN-graphene van der Waals structure
Yu. V. Bludov, D. A. Bahamon, N. M. R. Peres, C. J. S. de Matos
https://arxiv.org/abs/2403.00722

Hyperbolic phonon-plasmon polaritons in a hBN-graphene van der Waals structure
In this paper a thorough theoretical study of a new class of collective excitations, dubbed hyperbolic surface phonon plasmon polaritons, is performed. This new type of light-matter excitations are shown to have unique properties that allows to explore them both as the basis of ultra-sensitive devices to the dielectric nature of its surroundings. The system is a van der Waals heterostructure -- a layered metamaterial, composed of different 2D materials in direct contact one with another, namely…

A numerical analysis of the impact of gas pressure and dielectric material on the generation of body force in an air gas plasma actuator
Sajad Hajikhani, Ramin Mehrabifard, Hamed Soltani Ahmadi
https://arxiv.org/abs/2404.13384

A numerical analysis of the impact of gas pressure and dielectric material on the generation of body force in an air gas plasma actuator
Plasma technology has undeniably revolutionized industrial processes in recent decades. Atmospheric pressure plasma (APP) has emerged as a prominent and widely applicable tool in various scientific disciplines. Notably, plasma-assisted flow control has become a subject of intense interest, particularly applying surface dielectric barrier discharge (SDBD) plasma actuators for aerodynamic flow control. In this study, a two-dimensional model of the SDBD plasma actuator is developed using the COMSO…

Non-contact in situ multi-diagnostic NMR/dielectric spectroscopy
Alysson F. Morais, Sambhu Radhakrishnan, Gavriel Arbiv, Dirk Dom, Karel Duerinckx, Vinod Chandran C., Johan A. Martens, Eric Breynaert
https://arxiv.org/abs/2402.09183

Non-contact in situ multi-diagnostic NMR/dielectric spectroscopy
Introduction of a dielectric material in an NMR probe head modifies the frequency response of the probe circuit, a phenomenon revealed by the detuning of the probe. For NMR spectroscopy, this detuning is corrected for by tuning and matching the probe head prior to the NMR measurement. The magnitude of the probe detuning - the dielectric shift - provides direct access to the dielectric properties of the sample, enabling NMR spectrometers to simultaneously perform both dielectric and NMR spectros…

Linear response theory for light dark matter-electron scattering in materials
Riccardo Catena, Nicola Spaldin
https://arxiv.org/abs/2402.06817 https://

Linear response theory for light dark matter-electron scattering in materials
We combine the non-relativistic effective theory of dark matter (DM) - electron interactions with linear response theory to obtain a formalism that fully accounts for screening and collective excitations in DM-induced electronic transition rate calculations for general DM-electron interactions. In the same way that the response of a dielectric material to an external electric field in electrodynamics is described by the dielectric function, so in our formalism the response of a detector materia…

This https://arxiv.org/abs/2402.05745 has been replaced.
link: https://scholar.google.com/scholar?q=a

All dielectric integrable optical isolators
On-chip optical isolators, functioning as unidirectional gates for light, play a crucial role in maintaining signal integrity, preventing laser destabilization, and fortifying the overall performance of optical systems. In this paper, we propose a five-layered heterostructure consisting of a magneto-optic material sandwiched between parallel dielectric slab waveguides. Under TMOKE configuration, the coupled optical modes undergo an electromagnetic profile transformation that can be harnessed to…