Tuning and synthesis of semiconductor nanostructures by mechanical compression

Title: Tuning and synthesis of semiconductor nanostructures by mechanical compression

A mechanical compression method can be used to tune semiconductor nanoparticle lattice structure and synthesize new semiconductor nanostructures including nanorods, nanowires, nanosheets, and other three-dimensional interconnected structures. II-VI or IV-VI compound semiconductor nanoparticle assemblies can be used as starting materials, including CdSe, CdTe, ZnSe, ZnS, PbSe, and PbS.

Inventors:: Fan, Hongyou; Li, Binsong

Issue Date:: 2015-11-17

OSTI Identifier:: 1226543

Assignee:: Sandia Corporation (Albuquerque, NM) SNL-A

Patent Number(s):: 9,187,646

Application Number:: 13/905,959

Contract Number:: AC04-94AL85000

Resource Relation:: Patent File Date: 2013 May 30

Research Org:: Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Sponsoring Org:: USDOE

Country of Publication:: United States

Language:: English

Subject:: 75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Full Text
View Full Text

Other works cited in this record:

Pressure-Driven Assembly of Spherical Nanoparticles and Formation of 1D-Nanostructure Arrays
journal, July 2010

Wu, Huimeng; Bai, Feng; Sun, Zaicheng
Angewandte Chemie International Edition, Vol. 49, Issue 45, p. 8431-8434
DOI: 10.1002/anie.201001581

Pressure-induced morphology-dependent phase transformations of nanostructured tin dioxide
journal, September 2009

Dong, Zhaohui; Song, Yang
Chemical Physics Letters, Vol. 480, Issue 1-3, p. 90-95
DOI: 10.1016/j.cplett.2009.08.060

Similar records in DOepatents and OSTI.GOV collections:

Tuning and synthesis of metallic nanostructures by mechanical compression

Patent Fan, Hongyou ; Li, Binsong

The present invention provides a pressure-induced phase transformation process to engineer metal nanoparticle architectures and to fabricate new nanostructured materials. The reversible changes of the nanoparticle unit cell dimension under pressure allow precise control over interparticle separation in 2D or 3D nanoparticle assemblies, offering unique robustness for interrogation of both quantum and classic coupling interactions. Irreversible changes above a threshold pressure of about 8 GPa enables new nanostructures, such as nanorods, nanowires, or nanosheets.
Full Text Available November 2015
Quantum-size-controlled photoelectrochemical etching of semiconductor nanostructures

Patent Fischer, Arthur J. ; Tsao, Jeffrey Y. ; Wierer, Jr., Jonathan J. ; Xiao, Xiaoyin ; Wang, George T.

Quantum-size-controlled photoelectrochemical (QSC-PEC) etching provides a new route to the precision fabrication of epitaxial semiconductor nanostructures in the sub-10-nm size regime. For example, quantum dots (QDs) can be QSC-PEC-etched from epitaxial InGaN thin films using narrowband laser photoexcitation, and the QD sizes (and hence bandgaps and photoluminescence wavelengths) are determined by the photoexcitation wavelength.
Full Text Available March 2016
Stacked mechanical nanogenerator comprising piezoelectric semiconducting nanostructures and Schottky conductive contacts

Patent Wang, Zhong L ; Xu, Sheng

An electric power generator includes a first conductive layer, a plurality of semiconducting piezoelectric nanostructures, a second conductive layer and a plurality of conductive nanostructures. The first conductive layer has a first surface from which the semiconducting piezoelectric nanostructures extend. The second conductive layer has a second surface and is parallel to the first conductive layer so that the second surface faces the first surface of the first conductive layer. The conductive nanostructures depend downwardly therefrom. The second conductive layer is spaced apart from the first conductive layer at a distance so that when a force is applied, the semiconductingmore »« less
Full Text Available August 2011
Dynamic tuning of chemiresistor sensitivity using mechanical strain

Patent Martin, James E ; Read, Douglas H

The sensitivity of a chemiresistor sensor can be dynamically tuned using mechanical strain. The increase in sensitivity is a smooth, continuous function of the applied strain, and the effect can be reversible. Sensitivity tuning enables the response curve of the sensor to be dynamically optimized for sensing analytes, such as volatile organic compounds, over a wide concentration range.
Full Text Available September 2014
Design and synthesis of guest-host nanostructures to enhance ionic conductivity across nanocomposite membranes

Patent Hu, Michael Z ; Kosacki, Igor

An ion conducting membrane has a matrix including an ordered array of hollow channels and a nanocrystalline electrolyte contained within at least some or all of the channels. The channels have opposed open ends, and a channel width of 1000 nanometers or less, preferably 60 nanometers or less, and most preferably 10 nanometers or less. The channels may be aligned perpendicular to the matrix surface, and the length of the channels may be 10 nanometers to 1000 micrometers. The electrolyte has grain sizes of 100 nanometers or less, and preferably grain sizes of 1 to 50 nanometers. The electrolyte maymore »« less
Full Text Available January 2010