| 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.
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| Source Publication | JOURNAL OF APPLIED PHYSICS
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| 2016 | |
| Volume | 120Issue:4Pages:43107 |
| ISSN | 0021-8979 |
| Abstract | 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 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000382405400007 |
| WOS Research Area | Physics |
| WOS Subject | Physics, Applied |
| Funding Organization | 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. |
| Department | LNM材料的分子/细观统计力学行为 |
| Classification | 二类 |
| Ranking | False |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/59747 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Thadhani, NN (reprint author), Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA. |
| Recommended Citation 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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| a2016-088.pdf（5130KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | View Download | |
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