Strain-dependent photoluminescence behavior in three geometries of CdSe/CdS nanocrystals Page: 8 of 21
This article is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to Digital Library by the UNT Libraries Government Documents Department.
The following text was automatically extracted from the image on this page using optical character recognition software:
In summary, our experiments demonstrate that the optical properties of highly luminescent
CdSe/CdS nanocrystals are altered in response to external stresses. These particles, with the
same long-lasting and narrow-emission advantages of shell-encapsulated quantum dots7,
provide nanonewton-sensitive nanocrystal analog of the mechanoresponsive polymeric
materials recently described24. Core/shell dots, because of their small size, isotropic shape, and
lack of steric hindrance, may be employed to quantify non-hydrostaticity, for example within a
DAC. Tetrapods, due to their unique geometry, are particularly suited for use as an optical strain
gauge. Further development of tetrapods in this capacity requires precise calibration of the
fluorescence emission shift with force by alternate methods, since the strain state inside a DAC
at nanometer size scales cannot be readily determined. Synthetic tunability of size and shape
may allow tetrapods sensitive to forces over a range of magnitudes. An optical strain gauge,
sensing nanonewton forces, will be useful for optomechanical devices and investigations of
Here’s what’s next.
This article can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Article.
Choi, Charina L; Koski, Kristie J; Sivasankar, Sanjeevi & Alivisatos, A Paul. Strain-dependent photoluminescence behavior in three geometries of CdSe/CdS nanocrystals, article, May 26, 2009; Berkeley, California. (https://digital.library.unt.edu/ark:/67531/metadc1013869/m1/8/: accessed May 22, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.