Microdroplet deposition by laser-induced forward transfer

Willis, David A.; Grosu, Vicentiu

doi:10.1063/1.1944895

Cited by 145 publications

(98 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…With ns-LIFT this process has been shown to facilitate sublaser spot size printing. 11 In this letter we demonstrate that the same process can occur with fs-LIFT and also that the restriction of lateral heat diffusion in the film by the ultrashort time scales involved can result in significantly smaller depositions than previously reported. 3,11 The clear advantage of such fs-LIFT processing lies in the intrinsically high repetition rates from such laser systems, leading to the potential for large area direct writing.…”

mentioning

confidence: 63%

“…11 In this letter we demonstrate that the same process can occur with fs-LIFT and also that the restriction of lateral heat diffusion in the film by the ultrashort time scales involved can result in significantly smaller depositions than previously reported. 3,11 The clear advantage of such fs-LIFT processing lies in the intrinsically high repetition rates from such laser systems, leading to the potential for large area direct writing. Although the results we present here involve a 1 kHz laser pulse train, the technique requires only hundreds of nanojoule pulse energies, which are achievable with megahertz repetition rate femtosecond lasers.…”

mentioning

confidence: 63%

See 1 more Smart Citation

Nanodroplets deposited in microarrays by femtosecond Ti:sapphire laser-induced forward transfer

Banks

Grivas

Mills

et al. 2006

Applied Physics Letters

140

108

View full text Add to dashboard Cite

The authors present the deposition of nanoscale droplets of Cr using femtosecond Ti:sapphire laser-induced forward transfer. Deposits around 300 nm in diameter, significantly smaller than any previously reported, are obtained from a 30 nm thick source film. Deposit size, morphology, and adhesion to a receiver substrate as functions of applied laser fluence are investigated. The authors show that deposits can be obtained from previously irradiated areas of the source material film with negligible loss of deposition quality, allowing subspot size period microarrays to be produced without the need to move the source film. © 2006 American Institute of Physics. ͓DOI: 10.1063/1.2386921͔The laser-induced forward transfer ͑LIFT͒ technique exists as a method for the direct writing of a wide variety of materials with a minimum achievable resolution around 1 m. 1 It is of particular interest due to the ability to pattern material in air and at room temperature onto virtually any substrate. 2 In recent years, significant study has been directed towards extending the range of materials that can be deposited using LIFT; metals, 3 oxides, 2 superconductors, 4 DNA, 5 proteins, 6 fungal spores, 7 polycrystalline Si, 8 and various important electronic and sensing materials 9 have all been transferred. In contrast, efforts to reduce the minimum achievable deposition dimensions have received comparatively little attention. LIFT using nanosecond pulsed lasers ͑ns-LIFT͒ typically produces depositions which at best reproduce the shape and size of the laser focal spot. 10 Femtosecond-LIFT ͑fs-LIFT͒ using an UV excimer laser has been shown to be capable of subspot size depositions with diameters around 0.5 m. 3 Recently, it was demonstrated that ns-LIFT could also be used to produce subspot size deposits by carefully controlling the laser fluence just above the threshold for material transfer. 11 In LIFT, a thin film of the material to be deposited ͑the "source film"͒ is coated onto one face of a transparent substrate ͑the "carrier"͒ and brought into close contact with another substrate ͑the "receiver"͒. A single laser pulse is then focused through the carrier onto the carrier-film interface, where it is absorbed in a shallow layer of the film ͓Fig. 1͑a͔͒. Conventionally, LIFT then occurs by vaporization of film material at the constrained interface, with the resultant pressure buildup propelling film material to the receiver. However, this is the case only for thicker films and high laser fluence; for thin films and fluence just above the threshold for material transfer, it is possible for LIFT to occur solely by melt-through of the source film ͓Fig. 1͑b͔͒. With precise control of the laser fluence, only the center of the melt front reaches the free surface of the film ͓Fig. 1͑c͔͒, allowing molten material under pressure to expand through an unconstrained, subspot size region. With ns-LIFT this process has been shown to facilitate sublaser spot size printing. 11 In this letter we demonstrate that the same process can occur with fs-LIFT...

show abstract

mentioning

confidence: 63%

mentioning

confidence: 63%

Nanodroplets deposited in microarrays by femtosecond Ti:sapphire laser-induced forward transfer

Banks

Grivas

Mills

et al. 2006

Applied Physics Letters

140

108

View full text Add to dashboard Cite

show abstract

“…This method is based on laser-induced transfer of molten nanodroplets initiated by tightly focused laser pulses. A similar approach has already been applied to the controlled fabrication of metal nanoparticles [27][28][29][30][31][32] . A more sophisticated method using a ring-shaped femtosecond laser intensity distribution has been recently applied for the generation of single Si nanoparticles from bulk Si targets 17 .…”

Section: Resultsmentioning

confidence: 99%

Laser printing of silicon nanoparticles with resonant optical electric and magnetic responses

et al. 2014

View full text Add to dashboard Cite

Silicon nanoparticles with sizes of a few hundred nanometres exhibit unique optical properties due to their strong electric and magnetic dipole responses in the visible range. Here we demonstrate a novel laser printing technique for the controlled fabrication and precise deposition of silicon nanoparticles. Using femtosecond laser pulses it is possible to vary the size of Si nanoparticles and their crystallographic phase. Si nanoparticles produced by femtosecond laser printing are initially in an amorphous phase (a-Si). They can be converted into the crystalline phase (c-Si) by irradiating them with a second femtosecond laser pulse. The resonance-scattering spectrum of c-Si nanoparticles, compared with that of a-Si nanoparticles, is blue shifted and its peak intensity is about three times higher. Resonant optical responses of dielectric nanoparticles are characterized by accumulation of electromagnetic energy in the excited modes, which can be used for the realization of nanoantennas, nanolasers and metamaterials.

show abstract

“…The principle of LIFT technique is as follows: The laser beam passes through the supporting transparent substrate and focuses on the thin film (the so-called donor), and then the illuminated materials can be ablated forward and deposited on the opposite substrate (so-called receiver). Generally speaking, the separation between the receiver and donor in the LIFT technique can be varied from a few micrometers (noncontact-mode LIFT) to zero (contact-mode LIFT), that can lead to different fabricated structures on the donor [32]. In this paper, the contact-mode fs-LIFT is utilized to fabricate the metamaterial of multilayer structures.…”

Section: Introductionmentioning

confidence: 99%

“…A number of materials have been patterned by the LIFT technique, such as metals [31,32], carbon nanotube [33], chalcogenide glass [34], and DNA [35], etc. The principle of LIFT technique is as follows: The laser beam passes through the supporting transparent substrate and focuses on the thin film (the so-called donor), and then the illuminated materials can be ablated forward and deposited on the opposite substrate (so-called receiver).…”

Section: Introductionmentioning

confidence: 99%

Fabrication of multilayer metamaterials by femtosecond laser‐induced forward‐transfer technique

Tseng

Sun

et al. 2012

Laser & Photonics Reviews

View full text Add to dashboard Cite

A novel method based on femtosecond laser‐induced forward transfer for high‐throughput and efficient fabrication of periodic multilayer plasmonic metamaterials is demonstrated. With precisely controlling laser raster path applied on sputtered multilayer thin films, the laser‐ablated materials can be transferred to another substrate leaving the fabricated multilayer structure on the original substrate. Subsequently, three‐dimensional metamaterials can be made by multilayer structuring. Moreover, all the experimental results show that to create such multilayer split resonant rings (SRRs) with uniform profile, the laser fluence should be fine controlled under proper conditions. The optical property of fabricated multilayer SRR array is investigated by optical measurements and finite‐difference time‐domain simulations, showing various resonant modes in the middle‐IR region. The calculated induced current distributions exhibit rich resonance properties of the structures as well. This work markedly extends the laser direct writing technique to a wide application in fabricating complicated metamaterials and plasmonic devices efficiently.

show abstract

Microdroplet deposition by laser-induced forward transfer

Cited by 145 publications

References 8 publications

Nanodroplets deposited in microarrays by femtosecond Ti:sapphire laser-induced forward transfer

Nanodroplets deposited in microarrays by femtosecond Ti:sapphire laser-induced forward transfer

Laser printing of silicon nanoparticles with resonant optical electric and magnetic responses

Fabrication of multilayer metamaterials by femtosecond laser‐induced forward‐transfer technique

Contact Info

Product

Resources

About