scholarly journals Three decades of many-body potentials in materials research

MRS Bulletin ◽  
2012 ◽  
Vol 37 (5) ◽  
pp. 469-473 ◽  
Author(s):  
Susan B. Sinnott ◽  
Donald W. Brenner
Keyword(s):  
Many Body ◽  
Materials Research ◽  
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Abstract

scholarly journals Tunable Photodetectors via In Situ Thermal Conversion of TiS3 to TiO2

Nanomaterials ◽  
2020 ◽  
Vol 10 (4) ◽  
pp. 711 ◽  
Author(s):  
Foad Ghasemi ◽  
Riccardo Frisenda ◽  
Eduardo Flores ◽  
Nikos Papadopoulos ◽  
Robert Biele ◽  
...  
Keyword(s):  
2D Materials ◽  
Optoelectronic Devices ◽  
Thermal Conversion ◽  
Wide Bandgap ◽  
Common Source ◽  
Many Body ◽  
Two Dimensional Materials ◽  
Materials Research ◽  
Titanium Trisulfide

In two-dimensional materials research, oxidation is usually considered as a common source for the degradation of electronic and optoelectronic devices or even device failure. However, in some cases a controlled oxidation can open the possibility to widely tune the band structure of 2D materials. In particular, we demonstrate the controlled oxidation of titanium trisulfide (TiS3), a layered semicon-ductor that has attracted much attention recently thanks to its quasi-1D electronic and optoelectron-ic properties and its direct bandgap of 1.1 eV. Heating TiS3 in air above 300 °C gradually converts it into TiO2, a semiconductor with a wide bandgap of 3.2 eV with applications in photo-electrochemistry and catalysis. In this work, we investigate the controlled thermal oxidation of indi-vidual TiS3 nanoribbons and its influence on the optoelectronic properties of TiS3-based photodetec-tors. We observe a step-wise change in the cut-off wavelength from its pristine value ~1000 nm to 450 nm after subjecting the TiS3 devices to subsequent thermal treatment cycles. Ab-initio and many-body calculations confirm an increase in the bandgap of titanium oxysulfide (TiO2-xSx) when in-creasing the amount of oxygen and reducing the amount of sulfur.

scholarly journals Itinerancy of Quasiequilibria in One-Dimensional Gravitating Systems

1996 ◽  
Vol 174 ◽  
pp. 385-386
Author(s):  
T. Tsuchiya ◽  
N. Gouda ◽  
T. Konishi
Keyword(s):  
Surface Density ◽  
Mass Density ◽  
Gravitational Attraction ◽  
Many Body ◽  
One Dimensional ◽  
Many Body Systems ◽  
Gravitating Systems ◽  
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One-dimensional self-gravitating many-body systems consist of N identical parallel sheets which have uniform mass density m and infinite in extent in the (y, z) plane. We call the sheets particles in this paper. The particles are free to move along x axis and accelerate as a result of their mutual gravitational attraction. The Hamiltonian of this system has a form of where m, vi, and xi are the mass (surface density), velocity, and position of ith particle respectively.

Computational aspects of many-body potentials

MRS Bulletin ◽  
2012 ◽  
Vol 37 (5) ◽  
pp. 513-521 ◽  
Author(s):  
Steven J. Plimpton ◽  
Aidan P. Thompson
Keyword(s):  
Many Body ◽  
Computational Aspects ◽  
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Abstract

Advances in atom probe tomography instrumentation: Implications for materials research

MRS Bulletin ◽  
2016 ◽  
Vol 41 (1) ◽  
pp. 40-45 ◽  
Author(s):  
Michael P. Moody ◽  
Angela Vella ◽  
Stephan S.A. Gerstl ◽  
Paul A.J. Bagot
Keyword(s):  
Atom Probe Tomography ◽  
Atom Probe ◽  
Materials Research ◽  
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Abstract

scholarly journals VULCAN: A “hammer” for high-temperature materials research

MRS Bulletin ◽  
2019 ◽  
Vol 44 (11) ◽  
pp. 878-885 ◽  
Author(s):  
Ke An ◽  
Yan Chen ◽  
Alexandru D. Stoica
Keyword(s):  
High Temperature ◽  
High Temperature Materials ◽  
Materials Research ◽  
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Abstract

1986 Von Hippel Lecture: The Many-Body Approach to Materials Science

MRS Bulletin ◽  
1987 ◽  
Vol 12 (1) ◽  
pp. 36-40
Author(s):  
Minko Balkanski
Keyword(s):  
Nuclear Physics ◽  
Body Problem ◽  
Materials Science ◽  
The United States ◽  
Massachusetts Institute Of Technology ◽  
Many Body ◽  
Materials Research ◽  
Many Body Systems ◽  
Institute Of Technology ◽  
The Many

I would like to express my gratitude to the Awards Committee and its chairman for bringing me here today. One of the effects, and not the least, of this award is to call on my earliest recollections from the United States. In the Fall of 1956, I arrived in Boston at the Massachusetts Institute of Technology (MIT) as a postdoctoral fellow in the laboratory of Prof. von Hippel. My stay in the Materials Research Laboratory of MIT was a determining influence in my future work.The many-body problem is the study of the effects of interaction between bodies on the behavior of a many-body system. The importance of the many-body problem derives from the fact that almost any real physical system is composed of a set of interacting particles. Another essential aspect is that the many-body problem is not a branch of solid-state or atomic or nuclear physics but deals with general methods applicable to all many-body systems.Because of the complexity of the many-body problem, one of the preferred solutions is simply to ignore it. One can always say, “Let us admit that the particles forming the system do not interact or that their interaction is so weak that the effect can be considered negligible.” In many cases, this method produced good results, and one of the great mysteries is why.

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