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Uncovering microstructure evolution mechanisms that accompany the long-term operation of solid oxide fuel cells is a fundamental challenge in designing a more durable energy system for the future. To date, the study of fuel cell stack…

Materials Science · Physics 2023-03-24 Piotr Pawłowski , Szymon Buchaniec , Tomasz Prokop , Hiroshi Iwai , Grzegorz Brus

The extent of phase separation and water percolation in sulfonated membranes are the key to their performance in fuel cells. Toward this, the effect of hydration on the morphology and transport characteristics of sulfonated poly(ether ether…

Soft Condensed Matter · Physics 2017-06-28 Madhusmita Tripathy , P. B. Sunil Kumar , Abhijit P. Deshpande

We study the energy levels of H$_2$ molecules in a superstrong magnetic field ($B\go 10^{12}$ G), typically found on the surfaces of neutron stars. The interatomic interaction potentials are calculated by a Hartree-Fock method with…

Astrophysics · Physics 2009-10-28 Dong Lai , Edwin E. Salpeter

Molecular dynamics simulations using classical force fields were carried out to study energetic and structural properties of rotationally disordered clay mineral-water-CO2 systems at pressure and temperature relevant to geological carbon…

Finding a suitable material for hydrogen storage at ambient atmospheric conditions is challenging for material scientists and chemists. In this work, using a first principles based cluster expansion approach, the hydrogen storage capacity…

Materials Science · Physics 2023-02-22 Pritam Das , Krishnamohan Thekkepat , Young-Su Lee , Seung-Cheol Lee , Satadeep Bhattacharjee

In Isliker et al. (2000b), an extended cellular automaton (X-CA) model for solar flares was introduced. In this model, the interpretation of the model's grid-variable is specified, and the magnetic field, the current, and an approximation…

Astrophysics · Physics 2009-11-07 H. Isliker , A. Anastasiadis , L. Vlahos

Cellular microrheology has shown that cancer cells with high metastatic potential are softer compared to non-tumorigenic normal cells. These findings rely on measuring the apparent Young modulus of whole cells using primarily atomic force…

Biological Physics · Physics 2024-03-19 Marie Dessard , Jean-Baptiste Manneville , Jean-François Berret

6.7 GHz methanol masers are the brightest of class II methanol masers that are regarded as excellent signposts in the formation of young massive stars. We present here a molecular line study of 68 6.7 GHz methanol maser hosts chosen from…

Astrophysics of Galaxies · Physics 2021-11-09 Sonu Tabitha Paulson , Jagadheep D. Pandian

Methanol (CH$_3$OH) is at the root of organic ice chemistry in protoplanetary disks. However, its weak emission has made detections difficult. To date, gas-phase CH$_3$OH has been detected in only one Class II disk, TW Hya. We use the…

Solar and Stellar Astrophysics · Physics 2019-03-20 M. T. Carney , M. R. Hogerheijde , V. V. Guzmán , C. Walsh , K. I. Öberg , E. C. Fayolle , L. I. Cleeves , J. M. Carpenter , C. Qi

Gas-phase methanol was recently detected in a protoplanetary disk for the first time with ALMA. The peak abundance and distribution of methanol observed in TW Hya differed from that predicted by chemical models. Here, the chemistry of…

Earth and Planetary Astrophysics · Physics 2018-09-12 Catherine Walsh , Shreyas Vissapragada , Harry McGee

We investigate the dynamics of water confined in soft ionic nano-assemblies, an issue critical for a general understanding of the multi-scale structure-function interplay in advanced materials. We focus in particular on hydrated…

Materials Science · Physics 2017-08-23 Quentin Berrod , Samuel Hanot , Armel Guillermo , Stefano Mossa , Sandrine Lyonnard

This study introduces a novel approach utilizing Gaussian process model predictive control (MPC) to stabilize the output voltage of a polymer electrolyte fuel cell (PEFC) system by simultaneously regulating hydrogen and airflow rates. Two…

Systems and Control · Electrical Eng. & Systems 2024-03-26 Xiufei Li , Miao Zhang , Yuanxin Qi , Miao Yang

Using porous electrodes containing nickel hexacyanoferrate (NiHCF) nanoparticles, we construct and test a device for capacitive deionization in a two flow-channel device where the intercalation electrodes are in direct contact with an…

Chemical Physics · Physics 2020-03-27 S. Porada , A. Shrivastava , P. Bukowska , P. M. Biesheuvel , K. C. Smith

Multi-valent (MV) battery architectures based on pairing a Mg metal anode with a high-voltage ($\sim$ 3 V) intercalation cathode offer a realistic design pathway toward significantly surpassing the energy storage performance of traditional…

Li-ion rechargeable batteries have enabled the wireless revolution transforming global communication. Future challenges, however, demands distributed energy supply at a level that is not feasible with the current energy-storage technology.…

To study transportation of magnetic flux from large to small scales in protostellar sources, we analyzed the Nobeyama 45-m N2H+ (1-0), JCMT 850 um polarization, and ALMA C18O (2-1) and 1.3 mm and 0.8 mm (polarized) continuum data of the…

During the process of biomineralization, organisms utilize various biostrategies to enhance the mechanical durability of their skeletons. In this work, we establish that the presence of high-Mg nanoparticles embedded within lower Mg calcite…

Biological Physics · Physics 2022-05-11 Nuphar Bianco-Stein , Iryna Polishchuk , Arad Lang , Lotan Portal , Catherine Dejoie , Boaz Pokroy

Soil microbial fuel cells (SMFCs) are an emerging technology which offer clean and renewable energy in environments where more traditional power sources, such as chemical batteries or solar, are not suitable. With further development, SMFCs…

Signal Processing · Electrical Eng. & Systems 2024-06-26 Adam Hess-Dunlop , Harshitha Kakani , Colleen Josephson

Electrical modulus analysis of the frequency dependent conductivity data over the range from 100 Hz to 10 MHz and at temperature range of 140 oC to 300 oC were carried out on the mixed alkali vanadate glass samples having lithium and…

Materials Science · Physics 2018-06-01 Gajanan V Honnavar

We report multi-wavelength monitoring observations of an M-dwarf flare star AD Leonis with Seimei Telescope (6150--7930 {\AA}), SCAT (Spectroscopic Chuo-university Astronomical Telescope; 3700--7500 {\AA}), NICER (Neutron Star Interior…