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Laser-induced forward transfer of intact, solid-phase inorganic materials

Laser-induced forward transfer of intact, solid-phase inorganic materials
Laser-induced forward transfer of intact, solid-phase inorganic materials
Laser-induced forward transfer (LIFT) is a technique for the micro- and nanofabrication of photonic, electronic and biomedical devices. Compared to conventional methods of device microfabrication, LIFT offers the unique features of transfer of functional and sensitive thin films with a minimum of material damage in an intact state and a user-defined shape. The objective of this thesis is the definition of conditions and the demonstration of applications for LIFT-printing of inorganic solid thin films using spatially-shaped laser pulses to reduce the need of additional sacrificial layers, lithographic or annealing process steps.

The LIFT-printing of piezoelectric and thermoelectric materials onto planar target substrates (receivers) was studied and their dynamics, transfer velocity and the existence of shock waves was examined via time-resolved shadowgraphy. The deposit-receiver impact phase was modelled via finite-element analysis and was compared to experimental results of the nanosecond-LIFT of thermoelectric chalcogenide films. The printing onto elastomer-coated substrates improved the transfer quality, the adhesion between deposit and receiver, and enabled single pad sizes of 15mm2 leading to the fabrication of a working energy harvesting device exclusively via LIFT. Advancements to the LIFT technique were presented, enabling the transfer of intact single-crystalline donors and
conductive lines from molten copper micro-droplets. Shaping of the spatial laser pulse profile via digital micromirror arrays and homogenising optics increased the efficiency and the direct-write capability of the laser-machining setup for LIFT and ablation.

The results of this thesis contributed to expand the range of applicable thin films, led to the identification of regimes for the LIFT of brittle inorganic solid thin films in an intact state, and introduced improvements to the laser-machining setup for rapid-prototyping and device manufacturing without the need of additional post processing steps.
University of Southampton
Feinäugle, M.
3b15dc5b-ff52-4232-9632-b1be238a750c
Feinäugle, M.
3b15dc5b-ff52-4232-9632-b1be238a750c
Eason, Robert
e38684c3-d18c-41b9-a4aa-def67283b020

Feinäugle, M. (2013) Laser-induced forward transfer of intact, solid-phase inorganic materials. University of Southampton, Physical Sciences and Engineering, Doctoral Thesis, 225pp.

Record type: Thesis (Doctoral)

Abstract

Laser-induced forward transfer (LIFT) is a technique for the micro- and nanofabrication of photonic, electronic and biomedical devices. Compared to conventional methods of device microfabrication, LIFT offers the unique features of transfer of functional and sensitive thin films with a minimum of material damage in an intact state and a user-defined shape. The objective of this thesis is the definition of conditions and the demonstration of applications for LIFT-printing of inorganic solid thin films using spatially-shaped laser pulses to reduce the need of additional sacrificial layers, lithographic or annealing process steps.

The LIFT-printing of piezoelectric and thermoelectric materials onto planar target substrates (receivers) was studied and their dynamics, transfer velocity and the existence of shock waves was examined via time-resolved shadowgraphy. The deposit-receiver impact phase was modelled via finite-element analysis and was compared to experimental results of the nanosecond-LIFT of thermoelectric chalcogenide films. The printing onto elastomer-coated substrates improved the transfer quality, the adhesion between deposit and receiver, and enabled single pad sizes of 15mm2 leading to the fabrication of a working energy harvesting device exclusively via LIFT. Advancements to the LIFT technique were presented, enabling the transfer of intact single-crystalline donors and
conductive lines from molten copper micro-droplets. Shaping of the spatial laser pulse profile via digital micromirror arrays and homogenising optics increased the efficiency and the direct-write capability of the laser-machining setup for LIFT and ablation.

The results of this thesis contributed to expand the range of applicable thin films, led to the identification of regimes for the LIFT of brittle inorganic solid thin films in an intact state, and introduced improvements to the laser-machining setup for rapid-prototyping and device manufacturing without the need of additional post processing steps.

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More information

Published date: November 2013
Organisations: University of Southampton, Optoelectronics Research Centre

Identifiers

Local EPrints ID: 361940
URI: http://eprints.soton.ac.uk/id/eprint/361940
PURE UUID: d11fe46e-4580-4447-aa5c-a898efda6735
ORCID for Robert Eason: ORCID iD orcid.org/0000-0001-9704-2204

Catalogue record

Date deposited: 10 Feb 2014 14:48
Last modified: 30 Jul 2019 00:39

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Contributors

Author: M. Feinäugle
Thesis advisor: Robert Eason ORCID iD

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