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Title: In situ transmission electron microscopy of cadmium selenide nanorod sublimation

Journal Article · · Journal of Physical Chemistry Letters
DOI: https://doi.org/10.1021/jz502566m · OSTI ID:1342936
 [1];  [1];  [1];  [1]
  1. Univ. of California, Berkeley, CA (United States); Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)

In situ electron microscopy is used to observe the morphological evolution of cadmium selenide nanorods as they sublime under vacuum at a series of elevated temperatures. Mass loss occurs anisotropically along the nanorod’s long axis. At temperatures close to the sublimation threshold, the phase change occurs from both tips of the nanorods and proceeds unevenly with periods of rapid mass loss punctuated by periods of relative stability. At higher temperatures, the nanorods sublime at a faster, more uniform rate, but mass loss occurs from only a single end of the rod. Furthermore, we propose a mechanism that accounts for the observed sublimation behavior based on the terrace–ledge–kink (TLK) model and how the nanorod surface chemical environment influences the kinetic barrier of sublimation.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
Materials Sciences Division; USDOE
OSTI ID:
1342936
Report Number(s):
LBNL--1004437; ir:1004437
Journal Information:
Journal of Physical Chemistry Letters, Journal Name: Journal of Physical Chemistry Letters Journal Issue: 4 Vol. 6; ISSN 1948-7185
Publisher:
American Chemical SocietyCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (5)

In Situ Atomic‐Scale Observation of Kinetic Pathways of Sublimation in Silver Nanoparticles journal January 2019
Direct Observation of Early Stages of Growth of Multilayered DNA-Templated Au-Pd-Au Core-Shell Nanoparticles in Liquid Phase journal February 2019
Thermal Stability and Anisotropic Sublimation of Two-Dimensional Colloidal Bi2Te3 and Bi2Se3 Nanocrystals text January 2016
In Situ Atomic‐Scale Observation of Kinetic Pathways of Sublimation in Silver Nanoparticles journal January 2019
Automated analysis of evolving interfaces during in situ electron microscopy journal February 2016

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