Generation of 2D-arrays of anisotropically shaped nanoparticles by nanosecond laser-induced periodic surface patterning

2021 ◽  
pp. 149803
Author(s):  
Sebastian Durbach ◽  
Norbert Hampp
Keyword(s):  
Surface Patterning ◽  
Nanosecond Laser ◽  
Periodic Surface ◽  
Shaped Nanoparticles ◽  
2D Arrays

Multiscale Surface Patterning of Zirconia by Picosecond Pulsed Laser Irradiation

2020 ◽  
Vol 8 (1) ◽  
Author(s):  
Yuka Yamamuro ◽  
Tomotaka Shimoyama ◽  
Isao Yamashita ◽  
Jiwang Yan
Keyword(s):  
Phase Transformation ◽  
Laser Irradiation ◽  
Pulsed Laser ◽  
Surface Patterning ◽  
Yttria Stabilized Zirconia ◽  
Surface Structures ◽  
Stabilized Zirconia ◽  
Periodic Surface ◽  
Thermally Induced ◽  
Pulsed Laser Irradiation

Abstract Irradiation of yttria-stabilized zirconia (YSZ) was performed by a picosecond pulsed laser to investigate the possibility for multiscale surface patterning. Nanoscale laser-induced periodic surface structures (LIPSS) were successfully generated inside microscale grooves over a large surface area under specific conditions. A thermally induced phase transformation of YSZ was identified after laser irradiation, and this phase transformation was restrained by reducing the laser power or the number of irradiations. Moreover, it was found that the generation of LIPSS greatly changed the surface wettability of YSZ. These results demonstrated the possibility of creating zirconia hybrid patterns with high functionality, which may expand the applications of YSZ in industry.

scholarly journals Nanosecond laser-induced periodic surface structures on wide band-gap semiconductors

2013 ◽  
Vol 278 ◽  
pp. 325-329 ◽  
Author(s):  
Mikel Sanz ◽  
Esther Rebollar ◽  
Rashid A. Ganeev ◽  
Marta Castillejo
Keyword(s):  
Band Gap ◽  
Wide Band ◽  
Surface Structures ◽  
Nanosecond Laser ◽  
Wide Band Gap ◽  
Periodic Surface ◽  
Wide Band Gap Semiconductors

Secondary Grain Growth and Graphoepitaxy in thin Au films on Submicrometer-Period Gratings

1985 ◽  
Vol 47 ◽  
Author(s):  
Chee C. Wong ◽  
Henry I. Smith ◽  
C. V. Thompson
Keyword(s):  
Surface Energy ◽  
Grain Growth ◽  
Room Temperature ◽  
Surface Patterning ◽  
Wave Profile ◽  
Periodic Surface ◽  
Crystalline Films ◽  
Artificial Surface ◽  
Energy Anisotropy ◽  
Oriented Parallel

ABSTRACTSecondary grain growth in thin Au films on SiO2 substrates with periodic surface relief structures was studied as a model for the application of graphoepitaxy (the growth of orientated crystalline films through the use of artificial surface patterning). Secondary grain growth driven by sur-face energy anisotropy produces grains many times larger than the film thickness with uniform texture. In thin films of Au on SiO2, surface-energy- driven secondary grain growth was found to occur at room temperature as soon as the film becomes continuous, and was shown to be responsible for the {111} deposition texture. A square-wave-profile grating of 0.2 μm period, etched into the surface of the substrate, resulted in preferred growth of {111}-textured grains with <112> directions oriented parallel to the grating axis. It is proposed that surface energy minimization is responsible for this phenomenon.

scholarly journals Periodic surface texturing of amorphous-Si thin film irradiated by UV nanosecond laser

2019 ◽  
Vol 9 (11) ◽  
pp. 4247 ◽  
Author(s):  
Min Jin Kang ◽  
Tae Sang Park ◽  
Minyeong Kim ◽  
Eui Sun Hwang ◽  
Seung Hwan Kim ◽  
...  
Keyword(s):  
Thin Film ◽  
Surface Texturing ◽  
Nanosecond Laser ◽  
Periodic Surface ◽  
Amorphous Si ◽  
Si Thin Film

scholarly journals Surface Patterning of Cemented Carbides by Means of Nanosecond Laser

2019 ◽  
Vol 35 (2) ◽  
pp. 123-129 ◽  
Author(s):  
Shiqi Fang ◽  
Víctor Pérez ◽  
Nuria Salán ◽  
Dirk Baehre ◽  
Luis Llanes
Keyword(s):  
Surface Patterning ◽  
Cemented Carbides ◽  
Nanosecond Laser

scholarly journals Submicron and nano surface patterning using nanosecond laser technique

2021 ◽  
Author(s):  
Ali Abdul-Kadhum Husein
Keyword(s):  
Femtosecond Laser ◽  
Pulse Energy ◽  
Repetition Rate ◽  
Laser System ◽  
Surface Patterning ◽  
Optical Path ◽  
Wafer Surface ◽  
Nanosecond Laser ◽  
Direct Writing ◽  
Laser Technique

Direct writing by laser techniques in the micro and nanostructuring scale is very important for the fabrication of new materials and multifunctional devices. They have proven to be very successful tools for precision machining and microfabrication with applications in optical devices, microelectronics, medical device, biomedical, defense applications, and MEMS. Focused nanosecond (ns) laser pulses can produce periodic structures and arrays pattern structures in semiconductors and thin metallic film on shaped surfaces. The achievable structure size is restricted by the wavelength and diffraction limit as well as it is determined by material properties and laser pulse stability. This thesis proposes a nanosecond laser nanostructuring technique in common optical path configuration to examine the limitations of the currently used fabrication methods and type of setups used; the competitive edge is using nanosecond lasers as a tool. Prospectively, this technology can be applied for femtosecond laser fabrication, because this is an easy, simple and common optical path configuration. For this experimental setup, the use of a common optical path configuration for automatic interference offers equals path lengths. It is not required for complicated optical setups while in femtosecond laser setups, it is extremely important to use path compensation in order to offer time delay for one laser beam due to a long path and more optical components. A low repetition rate, low power nanosecond laser system is investigated to preventing the (HAZ) conditions. The influence of the laser repetition rate and pulse energy on the size and quality of submicron features which fabricated on silicon wafers and thin gold film is investigated. In terms of nanomachining below the ablation threshold (surface patterning), the influence of laser fluence, repetition rate and pulse energy on the spacing as well as diameter of dots created on silicon wafer surface is examined. These studies show the capability of the proposed system of nanosecond laser in common optical path configuration in meeting the industry requirements.

scholarly journals Submicron and nano surface patterning using nanosecond laser technique

2021 ◽  
Author(s):  
Ali Abdul-Kadhum Husein
Keyword(s):  
Femtosecond Laser ◽  
Pulse Energy ◽  
Repetition Rate ◽  
Laser System ◽  
Surface Patterning ◽  
Optical Path ◽  
Wafer Surface ◽  
Nanosecond Laser ◽  
Direct Writing ◽  
Laser Technique

Direct writing by laser techniques in the micro and nanostructuring scale is very important for the fabrication of new materials and multifunctional devices. They have proven to be very successful tools for precision machining and microfabrication with applications in optical devices, microelectronics, medical device, biomedical, defense applications, and MEMS. Focused nanosecond (ns) laser pulses can produce periodic structures and arrays pattern structures in semiconductors and thin metallic film on shaped surfaces. The achievable structure size is restricted by the wavelength and diffraction limit as well as it is determined by material properties and laser pulse stability. This thesis proposes a nanosecond laser nanostructuring technique in common optical path configuration to examine the limitations of the currently used fabrication methods and type of setups used; the competitive edge is using nanosecond lasers as a tool. Prospectively, this technology can be applied for femtosecond laser fabrication, because this is an easy, simple and common optical path configuration. For this experimental setup, the use of a common optical path configuration for automatic interference offers equals path lengths. It is not required for complicated optical setups while in femtosecond laser setups, it is extremely important to use path compensation in order to offer time delay for one laser beam due to a long path and more optical components. A low repetition rate, low power nanosecond laser system is investigated to preventing the (HAZ) conditions. The influence of the laser repetition rate and pulse energy on the size and quality of submicron features which fabricated on silicon wafers and thin gold film is investigated. In terms of nanomachining below the ablation threshold (surface patterning), the influence of laser fluence, repetition rate and pulse energy on the spacing as well as diameter of dots created on silicon wafer surface is examined. These studies show the capability of the proposed system of nanosecond laser in common optical path configuration in meeting the industry requirements.

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