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Blister formation in dynamic release mirror structures using femtosecond laser pulses
Optics Express
|October 27, 2022
Summary
We developed a new method to control laser-induced blister formation for Laser-Induced Forward Transfer (LIFT) applications. This technique uses a metal film to enable precise energy deposition, allowing for contaminant-free material transfer.
Area of Science:
- Materials Science
- Laser Physics
- Nanotechnology
Background:
- Laser-Induced Forward Transfer (LIFT) relies on blister formation for material transfer.
- Controlling blister dynamics is crucial for efficient and precise LIFT.
Purpose of the Study:
- To present a novel method for controlling blister formation in LIFT.
- To enable LIFT using nonlinear absorption regimes without damaging transfer materials.
Main Methods:
- Utilized a trilayer structure: two polymer films sandwiching a thin metal film.
- Investigated blister formation and expansion using a helium ion microscope.
- Analyzed laser energy deposition within the trilayer system.
Main Results:
- Laser energy is primarily absorbed in the metal layer, leaving the top polymer layer intact.
- Blister expansion is driven by laser-induced spallation of the metal film.
- Achieved controlled blister formation across a wide range of laser pulse energies.
Conclusions:
- The novel trilayer structure effectively controls blister formation for LIFT.
- This method facilitates contaminant-free LIFT by enabling nonlinear absorption beyond the diffraction limit.
- The technique offers a viable platform for advanced microfabrication and material transfer.
