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LEADER 03863nam 2200673Ia 4500

001 ocn402287768;

003 OCoLC;

005 20141212053305.0;

006 m d f ;

007 cr cn|||||||||;

008 090528s2009 mdua ob f000 0 eng d;

029 0 a| DTICEb| ADA497467;

035 a| (Sirsi) o402287768;

035 a| (OCoLC)402287768;

040 a| DTICEc| DTICEd| GPOd| UtOrBLW;

049 a| ERE#;

074 a| 0324-A-01 (online);

086 0 a| D 101.133:4783;

245 00 a| Exploiting unique features of nanodiamonds as an advanced energy source /c| William D. Mattson ..., [and others].;

260 a| Aberdeen Proving Ground, Md. :b| U.S. Army Research Laboratory,c| [2009];

300 a| 1 online resource (vi, 12 pages) :b| digital, PDF file.;

336 a| text2| rdacontent;

337 a| computer2| rdamedia;

338 a| online resource2| rdacarrier;

490 1 a| ARL/TR ;v| 4783;

500 a| Title from title screen (viewed Sept. 9, 2010).;

500 a| "April 2009.";

504 a| Includes bibliographical references (p. 8-9).;

506 a| APPROVED FOR PUBLIC RELEASE.;

520 a| We present a combined experimental and theoretical study on carbon nanodiamonds (NDs) using Raman and DAC experimentation and ab initio calculations. Our calculations confirm the surface reconstruction to a fullerene-like structure, and indicate compression of the diamond core, producing an estimated internal pressure of 50 GPa. Quantum molecular dynamics simulations of hypervelocity collisions of NDs show that upon collision, shock-induced amorphization first occurs, followed by complete disruption of the ND surface and ejection of reactive particles into the vacuum. Raman spectra of oxidized ND samples at increasing pressures showed a subtle increase in the vibrational intensity of the Raman feature centered near 1335 cm-1 near 18 GPa and continued under subsequent pressure increases. The intensification of this vibrational feature is consistent with a thinning of the amorphous carbon outer shell, which results in greater exposure to the diamond core with increasing pressure and may be a precursor to Structural Bond Energy Release (SBER) initiation. Additionally, a nearly twofold increase in the vibrational intensity of the sp2 graphite peak centered near 1630 cm-1 in the spectra of the oxidized nanodiamond sample suggests the possibility of a sluggish partial phase transition from sp3 hybridized diamond to sp2 hybridized graphite.;

650 0 a| Nanodiamonds.=| ^A879612;

650 17 a| Geology, geochemistry and mineralogy.2| scgdst;

650 27 a| Atomic and molecular physics and spectroscopy.2| scgdst;

650 27 a| Non-electrical energy conversion.2| scgdst;

650 17 a| Diamonds.2| dtict;

650 17 a| Molecular dynamics.2| dtict;

650 17 a| Energy transfer.2| dtict;

650 27 a| Fullerenes.2| scgdst;

650 27 a| Carbon.2| scgdst;

650 27 a| Raman spectra.2| scgdst;

650 27 a| Particle collisions.2| scgdst;

650 27 a| Hypervelocity impact.2| scgdst;

650 27 a| Vibration.2| scgdst;

650 27 a| Compression.2| scgdst;

650 27 a| Amorphous materials.2| scgdst;

653 2 a| NDS(NANODIAMONDS);

653 2 a| AMORPHIZATION;

653 2 a| REACTIVE PARTICLES;

653 2 a| SBER(STRUCTURAL BOND ENERGY RELEASE);

700 1 a| Mattson, William D.=| ^A1428870;

710 2 a| U.S. Army Research Laboratory.=| ^A367731;

776 08 i| Paper version:t| Exploiting unique features of nanodiamonds as an advanced energy source.h| vi, 12 p.w| (OCoLC)664559756;

830 0 a| ARL-TR (Aberdeen Proving Ground, Md.) ;v| 4783.=| ^A566074;

856 40 u| https://purl.fdlp.gov/GPO/LPS126034;

949 a| Click on web addressw| ASISh| JOYNER94;

998 a| 2321156;

998 a| u2321156;

596 a| 1;

999 a| CLICK ON WEB ADDRESSw| ASISc| 1i| 2321156-1001l| JNETm| JOYNERr| Ys| Yt| JNE1DOu| 10/18/2010x| EDOCUMENTz| JERESOURCE;

Exploiting unique features of nanodiamonds as an advanced energy source / William D. Mattson ..., [and others].

Other author	Mattson, William D.
Other author	U.S. Army Research Laboratory.
Format	Electronic
Publication Info	Aberdeen Proving Ground, Md. : U.S. Army Research Laboratory, [2009]
Description	1 online resource (vi, 12 pages) : digital, PDF file.
Supplemental Content	https://purl.fdlp.gov/GPO/LPS126034
Subjects	Nanodiamonds.

Series	ARL/TR ; 4783 ARL-TR (Aberdeen Proving Ground, Md.) ; 4783. ^A566074
Abstract	We present a combined experimental and theoretical study on carbon nanodiamonds (NDs) using Raman and DAC experimentation and ab initio calculations. Our calculations confirm the surface reconstruction to a fullerene-like structure, and indicate compression of the diamond core, producing an estimated internal pressure of 50 GPa. Quantum molecular dynamics simulations of hypervelocity collisions of NDs show that upon collision, shock-induced amorphization first occurs, followed by complete disruption of the ND surface and ejection of reactive particles into the vacuum. Raman spectra of oxidized ND samples at increasing pressures showed a subtle increase in the vibrational intensity of the Raman feature centered near 1335 cm-1 near 18 GPa and continued under subsequent pressure increases. The intensification of this vibrational feature is consistent with a thinning of the amorphous carbon outer shell, which results in greater exposure to the diamond core with increasing pressure and may be a precursor to Structural Bond Energy Release (SBER) initiation. Additionally, a nearly twofold increase in the vibrational intensity of the sp2 graphite peak centered near 1630 cm-1 in the spectra of the oxidized nanodiamond sample suggests the possibility of a sluggish partial phase transition from sp3 hybridized diamond to sp2 hybridized graphite.
General note	Title from title screen (viewed Sept. 9, 2010).
General note	"April 2009."
Bibliography note	Includes bibliographical references (p. 8-9).
Access restriction	APPROVED FOR PUBLIC RELEASE.
Issued in other form	Paper version: Exploiting unique features of nanodiamonds as an advanced energy source. vi, 12 p.
GPO item number	0324-A-01 (online)
Govt. docs number	D 101.133:4783

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Exploiting unique features of nanodiamonds as an advanced energy source / William D. Mattson ..., [and others].

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