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A troubleshooting guide for laser pulling platinum nanoelectrodes.

Koun Lim¹, Sondrica Goines¹, Mingchu Deng¹

¹Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA. jedick@email.unc.edu.

|June 14, 2023

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This study offers a detailed, step-by-step guide for fabricating platinum (Pt) nanoelectrodes using laser-assisted methods and affordable equipment. It also provides troubleshooting tips for common issues encountered during the nanoelectrode fabrication process.

Area of Science:

Electrochemistry
Materials Science
Nanotechnology

Background:

Laser-assisted fabrication of platinum (Pt) nanoelectrodes is widely published.
Replicating fabrication procedures across different labs and equipment is challenging due to variations in methods.
Few publications detail specific fabrication parameters or offer troubleshooting guidance.

Purpose of the Study:

To provide a standardized, step-by-step protocol for laser-assisted Pt nanoelectrode fabrication.
To offer practical solutions for common failures encountered during nanoelectrode fabrication.
To guide novice researchers in successfully fabricating Pt nanoelectrodes.

Main Methods:

Utilized a laser puller for Pt nanoelectrode fabrication.
Employed cyclic voltammetry for characterization.

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Used cell phone microscopy for imaging and quality assessment.

Documented specific fabrication parameters and common troubleshooting steps.

Main Results:

Successfully developed a reproducible laser-assisted fabrication protocol for Pt nanoelectrodes.
Identified and documented common failure modes during fabrication.
Provided effective troubleshooting strategies to overcome fabrication challenges.
Demonstrated the use of low-cost equipment for fabrication and characterization.

Conclusions:

The provided guide enhances the reproducibility of Pt nanoelectrode fabrication.
Troubleshooting advice aids beginners in overcoming common fabrication hurdles.
Low-cost equipment and detailed protocols make nanoelectrode fabrication more accessible.