Exploration of CdTe quantum dots as mesoscale pressure sensors via time-resolved shock-compression photoluminescent emission spectroscopy

doi:10.1063/1.4959257

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	Exploration of CdTe quantum dots as mesoscale pressure sensors via time-resolved shock-compression photoluminescent emission spectroscopy
	Kang ZT; Banishev AA; Lee G; Scripka DA; Breidenich J; Xiao P(肖攀); Christensen J; Zhou M; Summers CJ; Dlott DD; Thadhani NN; Thadhani, NN (reprint author), Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA.
发表期刊	JOURNAL OF APPLIED PHYSICS
	2016
卷号	120 期号:4 页码:43107
ISSN	0021-8979
摘要	The nanometer size of CdTe quantum dots (QDs) and their unique optical properties, including size-tunable narrow photoluminescent emission, broad absorption, fast photoluminescence decay, and negligible light scattering, are ideal features for spectrally tagging the shock response of localized regions in highly heterogeneous materials such as particulate media. In this work, the time-resolved laser-excited photoluminescence response of QDs to shock-compression was investigated to explore their utilization as mesoscale sensors for pressure measurements and in situ diagnostics during shock loading experiments. Laser-driven shock-compression experiments with steady-state shock pressures ranging from 2.0 to 13 GPa were performed on nanocomposite films of CdTe QDs dispersed in a soft polyvinyl alcohol polymer matrix and in a hard inorganic sodium silicate glass matrix. Time-resolved photoluminescent emission spectroscopy was used to correlate photoluminescence changes with the history of shock pressure and the dynamics of the matrix material surrounding the QDs. The results revealed pressure-induced blueshifts in emitted wavelength, decreases in photoluminescent emission intensity, reductions in peak width, and matrix-dependent response times. Data obtained for these QD response characteristics serve as indicators for their use as possible time-resolved diagnostics of the dynamic shock-compression response of matrix materials in which such QDs are embedded as in situ sensors. Published by AIP Publishing.
DOI	10.1063/1.4959257
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000382405400007
WOS研究方向	Physics
WOS类目	Physics, Applied
项目资助者	The collaborative work described in this paper was funded through two separate projects supported by the Defense Threat Reduction Agency (DTRA) Grant No. HDTRA1-12-1-0052 at Georgia Tech and HDTRA1-12-1-0011 at the University of Illinois at Urbana Champaign. The authors gratefully acknowledge the encouragement and support provided by the program monitors Dr. Suhithi Peiris and Dr. Douglas (Allen) Dalton. The work was also supported in part by the U.S. Air Force Office of Scientific Research under Award No. FA9550-15-1-0499, at Georgia Tech, and FA9550-16-1-0042 at the University of Illinois at Urbana Champaign.
课题组名称	LNM材料的分子/细观统计力学行为
论文分区	二类
力学所作者排名	False
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/59747
专题	非线性力学国家重点实验室
通讯作者	Thadhani, NN (reprint author), Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA.
推荐引用方式 GB/T 7714	Kang ZT,Banishev AA,Lee G,et al. Exploration of CdTe quantum dots as mesoscale pressure sensors via time-resolved shock-compression photoluminescent emission spectroscopy[J]. JOURNAL OF APPLIED PHYSICS,2016,120,4,:43107.
APA	Kang ZT.,Banishev AA.,Lee G.,Scripka DA.,Breidenich J.,...&Thadhani, NN .(2016).Exploration of CdTe quantum dots as mesoscale pressure sensors via time-resolved shock-compression photoluminescent emission spectroscopy.JOURNAL OF APPLIED PHYSICS,120(4),43107.
MLA	Kang ZT,et al."Exploration of CdTe quantum dots as mesoscale pressure sensors via time-resolved shock-compression photoluminescent emission spectroscopy".JOURNAL OF APPLIED PHYSICS 120.4(2016):43107.

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