Development of Nanocrystalline Graphite from Lignin Sources

2022 ◽  
Author(s):  
Valerie García-Negrón ◽  
Stephen C. Chmely ◽  
Jan Ilavsky ◽  
David J. Keffer ◽  
David P. Harper
Keyword(s):  
Nanocrystalline Graphite

Nanocrystalline Graphite Nanopores for DNA Sensing

Carbon ◽  
2020 ◽  
Author(s):  
Yunjiao Wang ◽  
Min Cheng ◽  
Liang Wang ◽  
Daming Zhou ◽  
Shixuan He ◽  
...  
Keyword(s):  
Dna Sensing ◽  
Nanocrystalline Graphite

scholarly journals Organic matter and water from asteroid Itokawa

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Q. H. S. Chan ◽  
A. Stephant ◽  
I. A. Franchi ◽  
X. Zhao ◽  
R. Brunetto ◽  
...  
Keyword(s):  
Organic Matter ◽  
Solar System ◽  
Parent Body ◽  
Asteroid Belt ◽  
True Nature ◽  
Water Ice ◽  
Nanocrystalline Graphite ◽  
Terrestrial Water ◽  
Solar System Bodies ◽  
Small Dust

AbstractUnderstanding the true nature of extra-terrestrial water and organic matter that were present at the birth of our solar system, and their subsequent evolution, necessitates the study of pristine astromaterials. In this study, we have studied both the water and organic contents from a dust particle recovered from the surface of near-Earth asteroid 25143 Itokawa by the Hayabusa mission, which was the first mission that brought pristine asteroidal materials to Earth’s astromaterial collection. The organic matter is presented as both nanocrystalline graphite and disordered polyaromatic carbon with high D/H and 15N/14N ratios (δD =  + 4868 ± 2288‰; δ15N =  + 344 ± 20‰) signifying an explicit extra-terrestrial origin. The contrasting organic feature (graphitic and disordered) substantiates the rubble-pile asteroid model of Itokawa, and offers support for material mixing in the asteroid belt that occurred in scales from small dust infall to catastrophic impacts of large asteroidal parent bodies. Our analysis of Itokawa water indicates that the asteroid has incorporated D-poor water ice at the abundance on par with inner solar system bodies. The asteroid was metamorphosed and dehydrated on the formerly large asteroid, and was subsequently evolved via late-stage hydration, modified by D-enriched exogenous organics and water derived from a carbonaceous parent body.

Nuclear-magnetic-resonance measurements of the hydrogen dynamics in nanocrystalline graphite

2005 ◽  
Vol 98 (4) ◽  
pp. 044302 ◽  
Author(s):  
E. Stanik ◽  
G. Majer ◽  
S. Orimo ◽  
T. Ichikawa ◽  
H. Fujii
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Nanocrystalline Graphite ◽  
Nuclear Magnetic

scholarly journals Micromachined nanocrystalline graphite membranes for gas separation

Carbon ◽  
2018 ◽  
Vol 138 ◽  
pp. 125-133 ◽  
Author(s):  
S.J. Fishlock ◽  
S.H. Pu ◽  
G. Bhattacharya ◽  
Yisong Han ◽  
J. McLaughlin ◽  
...  
Keyword(s):  
Gas Separation ◽  
Nanocrystalline Graphite

Voltammetric pH sensor based on electrochemically modified pseudo-graphite

The Analyst ◽  
2020 ◽  
Vol 145 (22) ◽  
pp. 7252-7259 ◽  
Author(s):  
Haoyu Zhu ◽  
Tanim Hassan ◽  
Humayun Kabir ◽  
Jeremy May ◽  
Kailash Hamal ◽  
...  
Keyword(s):  
Amorphous Carbon ◽  
Ph Sensor ◽  
Ph Sensing ◽  
Sensing Range ◽  
Nanocrystalline Graphite ◽  
The University ◽  
University Of Idaho

A nanocrystalline graphite-like amorphous carbon (graphite from the University of Idaho thermolyzed asphalt reaction, GUITAR) is electrochemically modified for voltammetric pH sensing. This electrode has a pH sensing range from 0 to 11.

Synthesis in a High-Energy Planetary Mill of Granules Based Onaluminum Alloy Containing Nanocrystalline Graphite

Metallurgist ◽  
2019 ◽  
Vol 63 (7-8) ◽  
pp. 733-741 ◽  
Author(s):  
A. V. Aborkin ◽  
A. I. Elkin ◽  
V. V. Ryabkova ◽  
M. I. Alymov
Keyword(s):  
High Energy ◽  
Planetary Mill ◽  
Nanocrystalline Graphite

4-Terminal Lateral MEMS Silicon Relay with Nanocrystalline Graphite Contact and Polymer Insulating/Mechanical Coupler

2018 ◽  
Author(s):  
J.D. Reynolds ◽  
S. Rana ◽  
J. Mouro ◽  
D. Pamunuwa ◽  
H. Chong
Keyword(s):  
Nanocrystalline Graphite
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