Transformation of silver nanowires into nanoparticles by Rayleigh instability: Comparison between laser irradiation and heat treatment

2018 ◽  
Vol 427 ◽  
pp. 65-73 ◽  
Author(s):  
Harim Oh ◽  
Jeeyoung Lee ◽  
Myeongkyu Lee
Keyword(s):  
Heat Treatment ◽  
Laser Irradiation ◽  
Silver Nanowires ◽  
Rayleigh Instability

Silver nanowires prepared on PET structured by laser irradiation

2014 ◽  
Vol 117 ◽  
pp. 184-187 ◽  
Author(s):  
Robert Krajcar ◽  
Jakub Siegel ◽  
Petr Slepička ◽  
Přemysl Fitl ◽  
Václav Švorčík
Keyword(s):  
Laser Irradiation ◽  
Silver Nanowires

Electrical Properties of Solid Phase Crystallized Silicon Films

2001 ◽  
Vol 664 ◽  
Author(s):  
Tadashi Watanabe ◽  
Hajime Watakabe ◽  
Toshiyuki Sameshima
Keyword(s):  
Heat Treatment ◽  
Electrical Conductivity ◽  
Energy Density ◽  
Laser Irradiation ◽  
Carrier Mobility ◽  
Crystalline Silicon ◽  
Solid Phase ◽  
Laser Energy ◽  
Silicon Films ◽  
Laser Energy Density

ABSTRACTIn this study, the carrier mobility and density for solid phase crystallized (SPC) silicon films fabricated at 600 °C for 48 hours are analyzed by free carrier optical absorption. The carrier mobility is 40 cm2/Vs for SPC films doped with 6×1019-cm−3-phosphorus atoms. This analysis suggests the SPC films have fine crystalline grains closed to single crystalline silicon. In addition, initial carrier density was 3×1019 cm−3, which increased to 6×1019 cm−3by XeCl excimer laser irradiation of 500mJ/cm2. The inactivated regions in SPC films are reduced by laser irradiation. However, the electrical conductivity after laser irradiation for SPC films doped with 6×1018-cm−3-phosphorus atoms decreased from 3.3 to 0.018 S/cm as laser energy density increased to 500mJ/cm2. On the other hand, the electrical conductivity increased from 14.7 to 31.3 S/cm with similar increase of laser energy density after H2O vapor heat treatment at 260°C for 3 hours with 1.3 MPa. Furthermore, the characteristics of n-channel TFTs fabricated with initial SPC films as well as SPC films which was irradiated by laser at 425mJ/cm2 are also researched. The threshold voltage is decreased from 3.8 to 2.0 V by laser irradiation. Threshold voltages of both cases are decreased from 3.8 to 2.4 V for no-laser irradiation and from 2.0 to 0.8 V for laser irradiation, after H2O vapor heat treatment at 310°C for 1 hour with 9.0MPa. Based on the above trial, the defect reduction method combining laser irradiation and H2O vapor heat treatment has proved to be very effective for SPC films and SPC TFTs.

Influence of Femtosecond Laser Irradiation and Heat Treatment on Precipitation of Silver Nanoparticles in Glass

2003 ◽  
Vol 20 (6) ◽  
pp. 932-934 ◽  
Author(s):  
Zeng Hui-Dan ◽  
Qiu Jian-Rong ◽  
Jiang Xiong-Wei ◽  
Qu Shi-Liang ◽  
Zhu Cong-Shan ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Silver Nanoparticles ◽  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Femtosecond Laser Irradiation

On-Machine Heat Treatment System Using YAG Laser: Laser Hardening of Micro-Cutting Edge

2010 ◽  
Vol 447-448 ◽  
pp. 203-207 ◽  
Author(s):  
Keiji Ogawa ◽  
Heisaburo Nakagawa ◽  
Akira Ohtsuka
Keyword(s):  
Heat Treatment ◽  
Machine Tool ◽  
Laser Irradiation ◽  
Cutting Edge ◽  
Laser Hardening ◽  
Treatment System ◽  
Yag Laser ◽  
Micro Cutting ◽  
Laser Quenching ◽  
Machining Center

This paper describes the laser hardening of micro-cutting edges using an on-machine heat treatment system with a YAG laser. Various laser conditions were evaluated to perform laser quenching on a machine tool without melting at the edges. We also investigated the influence of the motion accuracy of the machining center on the quenching characteristic of micro-cutting edges after laser irradiation. We clarified that we could quench both the straight and curved corner parts by arranging proper laser irradiation conditions considering the motion accuracy of the machining center.

scholarly journals Joining of Silver Nanowires by Femtosecond Laser Irradiation Method

2015 ◽  
Vol 56 (7) ◽  
pp. 981-983 ◽  
Author(s):  
Su Ding ◽  
Yanhong Tian ◽  
Zhi Jiang ◽  
Chunqing Wang
Keyword(s):  
Femtosecond Laser ◽  
Laser Irradiation ◽  
Silver Nanowires ◽  
Femtosecond Laser Irradiation
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