scholarly journals Laser-Induced Transfer of Noble Metal Nanodots with Femtosecond Laser-Interference Processing

Nanomaterials ◽  
2021 ◽  
Vol 11 (2) ◽  
pp. 305
Author(s):  
Yoshiki Nakata ◽  
Koji Tsubakimoto ◽  
Noriaki Miyanaga ◽  
Aiko Narazaki ◽  
Tatsuya Shoji ◽  
...  
Keyword(s):  
Thin Film ◽  
Femtosecond Laser ◽  
Noble Metal ◽  
Processing Technique ◽  
Femtosecond Laser Irradiation ◽  
Single Shot ◽  
Forward Transfer ◽  
Highly Sensitive Detection ◽  
Solid Liquid ◽  
Au Nanodots

Noble metal nanodots have been applied to plasmonic devices, catalysts, and highly sensitive detection in bioinstruments. We have been studying the fabrications of them through a laser-induced dot transfer (LIDT) technique, a type of laser-induced forward transfer (LIFT), in which nanodots several hundred nm in diameter are produced via a solid–liquid–solid (SLS) mechanism. In the previous study, an interference laser processing technique was applied to LIDT, and aligned Au nanodots were successfully deposited onto an acceptor substrate in a single shot of femtosecond laser irradiation. In the present experiment, Pt thin film was applied to this technique, and the deposited nanodots were measured by scanning electron microscopy (SEM) and compared with the Au nanodots. A typical nanodot had a roundness fr=0.98 and circularity fcirc=0.90. Compared to the previous experiment using Au thin film, the size distribution was more diffuse, and it was difficult to see the periodic alignment of the nanodots in the parameter range of this experiment. This method is promising as a method for producing large quantities of Pt particles with diameters of several hundred nm.

scholarly journals Uncertainty Analysis of Melting and Resolidification of Gold Film Irradiated by Nano- to Femtosecond Lasers Using Stochastic Method

2016 ◽  
Vol 138 (6) ◽  
Author(s):  
Nazia Afrin ◽  
Yuwen Zhang ◽  
J. K. Chen
Keyword(s):  
Femtosecond Laser ◽  
Laser Fluence ◽  
Gold Film ◽  
Control Volume ◽  
Coupling Factor ◽  
Femtosecond Laser Irradiation ◽  
Free Standing ◽  
Input Parameters ◽  
Lattice Coupling ◽  
Solid Liquid

A sample-based stochastic model is presented to investigate the effects of uncertainties of various input parameters, including laser fluence, laser pulse duration, thermal conductivity constants for electron, and electron–lattice coupling factor, on solid–liquid phase change of gold film under nano- to femtosecond laser irradiation. Rapid melting and resolidification of a free-standing gold film subject to nano- to femtosecond laser are simulated using a two-temperature model incorporated with the interfacial tracking method. The interfacial velocity and temperature are obtained by solving the energy equation in terms of volumetric enthalpy for control volume (CV). The convergence of variance (COV) is used to characterize the variability of the input parameters, and the interquartile range (IQR) is used to calculate the uncertainty of the output parameters. The IQR analysis shows that the laser fluence and the electron–lattice coupling factor have the strongest influences on the interfacial location, velocity, and temperatures.

scholarly journals Uncertainty Analysis of Melting and Resolidification of Gold Film Irradiated by Nano- to Femtosecond Lasers Using Stochastic Method

2016 ◽  
Author(s):  
Nazia Afrin ◽  
Yuwen Zhang ◽  
J. K. Chen
Keyword(s):  
Femtosecond Laser ◽  
Laser Fluence ◽  
Gold Film ◽  
Control Volume ◽  
Coupling Factor ◽  
Femtosecond Laser Irradiation ◽  
Free Standing ◽  
Input Parameters ◽  
Lattice Coupling ◽  
Solid Liquid

A sample-based stochastic model is presented to investigate the effects of uncertainties of various input parameters, including laser fluence, laser pulse duration, thermal conductivity constants for electron, and electron-lattice coupling factor, on solid-liquid phase change of gold film under nano- to femtosecond laser irradiation. Rapid melting and resolidification of a free standing gold film subject to nano- to femtosecond laser are simulated using a two-temperature model incorporated with the interfacial tracking method. The interfacial velocity and temperature are obtained by solving the energy equation in terms of volumetric enthalpy for control volume. The convergence of variance (COV) is used to characterize the variability of the input parameters, and the interquartile range (IQR) is used to calculate the uncertainty of the output parameters. The IQR analysis shows that the laser fluence and the electron-lattice coupling factor have the strongest influences on the interfacial location, velocity, and temperatures.

scholarly journals Micro-patterning of Indium thin film for generation of micron and submicron particles using femtosecond laser-induced forward transfer

2015 ◽  
Vol 33 (3) ◽  
pp. 449-454 ◽  
Author(s):  
Kamlesh Alti ◽  
Sudhanshu Dwivedi ◽  
Santhosh Chidangil ◽  
Deepak Mathur ◽  
Alika Khare
Keyword(s):  
Thin Film ◽  
Femtosecond Laser ◽  
Submicron Particles ◽  
Donor Substrate ◽  
Micro Patterning ◽  
Close Proximity ◽  
Forward Transfer ◽  
Deposition Dose

AbstractThis paper reports on micro-pattering of Indium thin film (donor substrate) using a higher deposition dose than previously reported. The threshold deposition dose required for micro-patterning was measured. Ejected material from the micro-patterned thin film was deposited onto an accepter substrate kept in close proximity; it clearly shows deposition of micron and submicron particles of Indium. Moreover, a clean line like structure was deposited onto the accepter substrate when the accepter substrate was moved with the same velocity as that of the donor substrate.

Femtosecond Laser-Induced Precipitation and Manipulation of Noble Metal Nanoparticles in Silicate Glass

2007 ◽  
Vol 345-346 ◽  
pp. 1195-1200
Author(s):  
Kazuyuki Hirao ◽  
Bin Hua ◽  
Masayuki Nishi ◽  
Yasuhiko Shimotuma ◽  
Kiyotaka Miura
Keyword(s):  
Femtosecond Laser ◽  
Metal Nanoparticles ◽  
Noble Metal ◽  
Heat Diffusion ◽  
Femtosecond Laser Irradiation ◽  
Noble Metal Nanoparticles ◽  
Laser Source ◽  
High Peak Power ◽  
Selective Precipitation ◽  
Small Structure

Femtosecond laser is a perfect laser source for materials processing when high accuracy and small structure size are required. Due to the ultra short interaction time and the high peak power, the process is generally characterized by the absence of heat diffusion and, consequently molten layers. Various induced structures have been observed in glasses after the femtosecond laser irradiation. Here, we report on space-selective precipitation and manipulation of noble metal nanoparticles in the femtosecond laser-irradiated glasses.

Research on Periodic Structures Aroused by Femtosecond Laser Irradiation on Single-Crystalline Silicon Wafer

2006 ◽  
Vol 315-316 ◽  
pp. 779-783
Author(s):  
Yan Shen Wang ◽  
Shen Dong ◽  
Yan Qiang Yang ◽  
Ying Chun Liang ◽  
Y.H. Wang
Keyword(s):  
Femtosecond Laser ◽  
Energy Deposition ◽  
Crystalline Silicon ◽  
Periodic Structures ◽  
Single Point ◽  
Femtosecond Laser Irradiation ◽  
Single Shot ◽  
Laser Polarization ◽  
Single Crystalline Silicon ◽  
Light Waves

Ripples in the area of femtosecond laser irradiated discrete points and continuous lines were studied. The characteristics of interference-induced ripples (LSFL) in the area irradiated by single shot were investigated by AFM. During single point irradiation, morphology of the irradiated area changed with energy deposition. Morphologies of the irradiated continuous lines with and without ablated groove inside were both investigated. The intensity of interfered light waves varied in different positions of each energy stripes. Thus the characteristics of ripples in the irradiated area varied with different positions. Ripples much larger than LSFL were found perpendicular to laser polarization.

scholarly journals Initial Morphology and Feedback Effects on Laser-Induced Periodic Nanostructuring of Thin-Film Metallic Glasses

Nanomaterials ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 1076
Author(s):  
Mathilde Prudent ◽  
Florent Bourquard ◽  
Alejandro Borroto ◽  
Jean-François Pierson ◽  
Florence Garrelie ◽  
...  
Keyword(s):  
Thin Film ◽  
Femtosecond Laser ◽  
Surface Topography ◽  
Metallic Glasses ◽  
Physical Vapor Deposition ◽  
Thermomechanical Properties ◽  
Femtosecond Laser Irradiation ◽  
Columnar Microstructure ◽  
Morphological Response ◽  
Feedback Effects

Surface nanostructuring by femtosecond laser is an efficient way to manipulate surface topography, creating advanced functionalities of irradiated materials. Thin-film metallic glasses obtained by physical vapor deposition exhibit microstructures free from grain boundaries, crystallites and dislocations but also characterized by a nanometric surface roughness. These singular properties make them more resilient to other metals to form laser-induced nanopatterns. Here we investigate the morphological response of Zr65Cu35 alloys under ultrafast irradiation with multipulse feedback. We experimentally demonstrate that the initial columnar microstructure affects the surface topography evolution and conditions the required energy dose to reach desired structures in the nanoscale domain. Double pulses femtosecond laser irradiation is also shown to be an efficient strategy to force materials to form uniform nanostructures even when their thermomechanical properties have a poor predisposition to generate them.

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