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Updated: May 6, 2026

Generating Lap Joints Via Friction Stir Spot Welding on DP780 Steel

Generating Lap Joints Via Friction Stir Spot Welding on DP780 Steel

Published on: August 13, 2019

Note: Resistance spot welding using a microgripper.

G Hwang¹, P Podrzaj, H Hashimoto

¹Laboratory for Photonics and Nanostructures, National Center for Scientific Research, Marcoussis 91460, France.

The Review of Scientific Instruments

|November 5, 2013

Summary

This summary is machine-generated.

A new micro-scale resistance spot welding (RSW) technique uses a microgripper to assemble ultra-thin nanostructures. This method creates stable electrical contacts and mechanical strength for nanoelectronics and nanoelectromechanical systems (NEMS).

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Last Updated: May 6, 2026

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Area of Science:

Materials Science
Nanotechnology
Mechanical Engineering

Background:

Growing interest in thin-film nanostructures for advanced electronics.
Need for reliable connection methods in nanoelectronics and nanoelectromechanical systems (NEMS).
Limitations of existing micro-assembly techniques.

Purpose of the Study:

To introduce a novel micron-scale resistance spot welding (RSW) technique.
To demonstrate the assembly of ultra-thin film nanostructures using a microgripper.
To evaluate the stability and strength of the welded connections.

Main Methods:

Development of a microgripper with integrated mobile spot welding electrodes.
Application of RSW for assembling three-dimensional helical nanobelt (HNB) based devices.
In-situ monitoring of the welding process using a capacitive micro force sensor.

Main Results:

Successful assembly of HNB-based devices using the microgripper RSW system.
Demonstration of stable electrical contact post-welding.
Confirmation of sufficient mechanical strength for device construction.

Conclusions:

The microgripper-based RSW technique is effective for assembling nanostructures.
This method offers a viable solution for creating robust connections in nanoelectronic devices.
The technique shows promise for fabricating complex nanodevices like those based on HNBs.