This title appears in the Scientific Report :
2018
Please use the identifier:
http://dx.doi.org/10.1039/C7NR07912E in citations.
Shell-binary nanoparticle materials with variable electrical and electro-mechanical properties
Shell-binary nanoparticle materials with variable electrical and electro-mechanical properties
Nanoparticle (NP) materials with the capability to adjust their electrical and electro-mechanical properties facilitate applications in strain sensing technology. Traditional NP materials based on single component NPs lack a systematic and effective means of tuning their electrical and electro-mecha...
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Personal Name(s): | Zhang, P. |
---|---|
Bousack, Herbert / Dai, Y. / Offenhäusser, A. / Mayer, D. (Corresponding author) | |
Contributing Institute: |
Bioelektronik; ICS-8 |
Published in: | Nanoscale, 10 (2018) 3, S. 992 - 1003 |
Imprint: |
Cambridge
RSC Publ.
2018
|
DOI: |
10.1039/C7NR07912E |
PubMed ID: |
29265122 |
Document Type: |
Journal Article |
Research Program: |
Controlling Configuration-Based Phenomena |
Publikationsportal JuSER |
Nanoparticle (NP) materials with the capability to adjust their electrical and electro-mechanical properties facilitate applications in strain sensing technology. Traditional NP materials based on single component NPs lack a systematic and effective means of tuning their electrical and electro-mechanical properties. Here, we report on a new type of shell-binary NP material fabricated by self-assembly with either homogeneous or heterogeneous arrangements of NPs. Variable electrical and electro-mechanical properties were obtained for both materials. We show that the electrical and electro-mechanical properties of these shell-binary NP materials are highly tunable and strongly affected by the NP species as well as their corresponding volume fraction ratio. The conductivity and the gauge factor of these shell-binary NP materials can be altered by about five and two orders of magnitude, respectively. These shell-binary NP materials with different arrangements of NPs also demonstrate different volume fraction dependent electro-mechanical properties. The shell-binary NP materials with a heterogeneous arrangement of NPs exhibit a peaking of the sensitivity at medium mixing ratios, which arises from the aggregation induced local strain enhancement. Studies on the electron transport regimes and micro-morphologies of these shell-binary NP materials revealed the different mechanisms accounting for the variable electrical and electro-mechanical properties. A model based on effective medium theory is used to describe the electrical and electro-mechanical properties of such shell-binary nanomaterials and shows an excellent match with experiment data. These shell-binary NP materials possess great potential applications in high-performance strain sensing technology due to their variable electrical and electro-mechanical properties. |