Strain-Dependent Photoluminescence Behavior of CdSe/CdS Nanocrystals with Spherical, Linear, and Branched Topologies
The photoluminescence of CdSe/CdS core/shell quantum dots, nanorods, and tetrapods is investigated as a function of applied hydrostatic and non-hydrostatic pressure. The optoelectronic properties of all three nanocrystal morphologies are affected by strain. Furthermore, it is demonstrated that the unique morphology of a tetrapod is highly sensitive to non-isotropic stress environments. Seeded tetrapods can thereby serve as an optical strain gauge, capable of measuring forces on the order of nanonewtons. We anticipate that a nanocrystal strain gauge with optical readout will be useful for applications ranging from sensitive optomechanical devices to investigations of biomechanical processes.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- Materials Sciences Division
- DOE Contract Number:
- DE-AC02-05CH11231; PN2EY016546
- OSTI ID:
- 972713
- Report Number(s):
- LBNL-2470E; TRN: US201005%%264
- Journal Information:
- Nano Letters, Journal Name: Nano Letters
- Country of Publication:
- United States
- Language:
- English
Similar Records
Strain-dependent photoluminescence behavior in three geometries of CdSe/CdS nanocrystals
Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals
Giant PbSe/CdSe/CdSe Quantum Dots: Crystal-Structure-Defined Ultrastable Near-Infrared Photoluminescence from Single Nanocrystals
Journal Article
·
Tue May 26 00:00:00 EDT 2009
· Nature Materials
·
OSTI ID:972713
+1 more
Seeded Synthesis of CdSe/CdS Rod and Tetrapod Nanocrystals
Journal Article
·
Wed Dec 11 00:00:00 EST 2013
· Journal of Visualized Experiments
·
OSTI ID:972713
+1 more
Giant PbSe/CdSe/CdSe Quantum Dots: Crystal-Structure-Defined Ultrastable Near-Infrared Photoluminescence from Single Nanocrystals
Journal Article
·
Thu Aug 03 00:00:00 EDT 2017
· Journal of the American Chemical Society
·
OSTI ID:972713
+10 more