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Updated: May 30, 2026

Preparation and Reactivity of Gasless Nanostructured Energetic Materials

Preparation and Reactivity of Gasless Nanostructured Energetic Materials

Published on: April 2, 2015

Electrical sintering of nanoparticle structures.

Mark L Allen¹, Mikko Aronniemi, Tomi Mattila

¹VTT Technical Research Centre of Finland, Sensors, POB 1000, FI-02044 VTT, Espoo, Finland.

|August 10, 2011

Summary

Electrical sintering rapidly enhances silver nanoparticle conductivity over five orders of magnitude, achieving superior results to oven methods for printed electronics applications.

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Area of Science:

Materials Science
Electrical Engineering
Nanotechnology

Background:

Conventional nanoparticle sintering often requires high temperatures, limiting substrate compatibility.
Achieving high conductivity in printed nanoparticle layers is crucial for electronic applications.

Purpose of the Study:

To present a novel electrical sintering method for nanoparticle structures.
To demonstrate the effectiveness of electrical sintering on temperature-sensitive substrates.

Main Methods:

Utilizing an electrical sintering technique by applying voltage to ink-jet-printed silver nanoparticle structures.
Employing temperature-sensitive photopaper as a substrate to test method limitations.

Main Results:

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Processing of Bulk Nanocrystalline Metals at the US Army Research Laboratory

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Achieved conductivity increase of over five orders of magnitude.
Reached a maximum conductivity of 3.7 × 10(7) S m(-1).
Demonstrated rapid sintering (major transition within 2 µs) due to positive feedback.

Conclusions:

Electrical sintering offers a rapid, high-performance alternative to thermal methods.
The technique enables patterning, controlled conductivity, and in situ monitoring for nanoparticle functionalization.