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Assembling Magnetic Nanoparticles on Nanomechanical Resonators for Torque Magnetometry
Tayyaba Firdous1,2, David K Potter1
1Department of Physics, University of Alberta, Edmonton, AB T6G 2E1, Canada.
International Journal of Molecular Sciences
|February 7, 2020
Summary
We developed a new method to pattern nanoparticle arrays on nanomechanical devices. This technique successfully created functional nanomechanical torque magnetometers with self-assembled nanoparticle arrays.
Area of Science:
- Nanotechnology
- Materials Science
- Mechanical Engineering
Background:
- Micro- and nanomechanical devices require precise patterning of functional materials.
- Existing nanoparticle patterning methods can be complex and lack versatility.
Purpose of the Study:
- To report a highly compliant process for patterning nanoparticle arrays on micro- and nanomechanical devices.
- To demonstrate this process using nanomechanical torque magnetometers.
Main Methods:
- Fabrication of nanomechanical devices on silicon-on-insulator substrates.
- Single-layer self-assembly of nanoparticles onto released nanomechanical devices.
- Utilizing a hybrid top-down and bottom-up approach for nanoparticle arrangement.
Main Results:
- Successfully fabricated sizable arrays of nanomechanical devices.
- Demonstrated self-assembly of nanoparticles into specific geometrical shapes.
- Achieved detection of magnetic torque signals using the fabricated devices.
Conclusions:
- The developed nanoparticle patterning process is highly compliant and versatile.
- This method enables the creation of functional nanomechanical sensors.
- The process is applicable to various nanoparticle types and device geometries.
