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Measurement of Compressive Stress-Strain Response at Small-Strains
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An open-source platform to study uniaxial stress effects on nanoscale devices
G Signorello1, M Schraff1, P Zellekens1
1IBM Research-Zurich, 8803 Rüschlikon, Switzerland.
The Review of Scientific Instruments
|June 3, 2017
Summary
We developed an open-source platform for characterizing nanodevices under uniaxial stress using electrical and optical methods. This tool enhances the study of nanoscale materials and electronics, particularly for piezo-resistance in indium arsenide (InAs) nanowires.
Area of Science:
- Materials Science
- Nanotechnology
- Condensed Matter Physics
Background:
- Characterizing nanodevices under mechanical stress is crucial for advancing nanoscale electronics.
- Existing methods for measuring piezo-resistance in nanowires can be complex and limited.
- Understanding strain effects is key to developing new electronic materials and devices.
Purpose of the Study:
- To present an automated measurement platform for characterizing nanodevices under uniaxial stress.
- To detail the mechanical device, substrate design, fabrication, and open-source software.
- To demonstrate the platform's capability using indium arsenide (InAs) nanowire piezo-resistance.
Main Methods:
- Integrated electrical transport and optical spectroscopy (Raman spectroscopy).
- Uniaxial stress application via a custom mechanical device.
- Open-source instrument control software for automated measurements.
- Fabrication of specialized substrates for nanodevice integration.
Main Results:
- Successfully characterized the piezo-resistance of an InAs nanowire device.
- Demonstrated the platform's effectiveness in combining electrical and optical measurements under stress.
- Highlighted advantages over current state-of-the-art piezo-resistance measurement techniques.
Conclusions:
- The developed platform offers a versatile and efficient method for nanodevice characterization under strain.
- This open-source approach facilitates further research into strain effects in nanoscale materials.
- Strain engineering shows potential as a significant factor in boosting nanoscale electronics performance.
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