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Evaluating Plasmonic Transport in Current-carrying Silver Nanowires
Published on: December 11, 2013
Shape evolution of silver nanoplates through heating and photoinduction
Bin Tang1, Shuping Xu, Xueliang Hou
1Institute for Frontier Materials, Deakin University, Geelong, Victoria 3216, Australia.
ACS Applied Materials & Interfaces
|January 10, 2013
Summary
Silver nanoprisms transform into nanodisks with heat and light, then revert. Dissolved oxygen and citrate are key to these shape conversions and tuning localized surface plasmon resonance (LSPR) properties.
Area of Science:
- Nanotechnology
- Materials Science
- Physical Chemistry
Background:
- Silver nanoplates exhibit tunable optical properties based on their shape.
- Controlling nanoparticle morphology is crucial for advanced applications.
Purpose of the Study:
- To investigate shape conversions of silver nanoplates using thermal and light stimuli.
- To understand the mechanisms and key factors influencing these transformations.
- To demonstrate the tuning of localized surface plasmon resonance (LSPR) properties.
Main Methods:
- Heating and light irradiation of silver nanoprisms.
- Transmission electron microscopy (TEM) for morphological analysis.
- Extinction spectroscopy to study LSPR properties.
- Investigating the role of dissolved oxygen and citrate.
Main Results:
- Silver nanoprisms converted to nanodisks upon heating, possibly via atom dissolution and readsorption.
- Light irradiation reversed the nanodisk to nanoprism shape.
- Dissolved oxygen was critical for nanoprism-to-nanodisk conversion.
- Citrate was essential for the photoinduced shape reversal.
- Shape conversion effectively tuned the LSPR properties of silver nanoplates.
Conclusions:
- Shape conversion of silver nanoplates is achievable through controlled heating and light irradiation.
- The process is influenced by dissolved oxygen and citrate, highlighting chemical roles in morphology control.
- Tunable LSPR properties via shape manipulation offer potential for optical applications.
