High‐speed laser direct writing of tungsten conductors from W(CO)6

1990 ◽  
Vol 56 (25) ◽  
pp. 2581-2583 ◽  
Author(s):  
Y. Nambu ◽  
Y. Morishige ◽  
S. Kishida
Keyword(s):  
High Speed ◽  
Direct Writing ◽  
Laser Direct Writing

Surface Microfabrication of Conventional Glass Using Femtosecond Laser for Microfluidic Applications

2017 ◽  
Vol 11 (6) ◽  
pp. 878-882 ◽  
Author(s):  
Takuma Niioka ◽  
◽  
Yasutaka Hanada
Keyword(s):  
High Resolution ◽  
Microfluidic Chip ◽  
High Speed ◽  
Single Cell Analysis ◽  
Glass Slide ◽  
Cell Analysis ◽  
Microfluidic Chips ◽  
Direct Writing ◽  
Laser Direct Writing ◽  
Fs Laser

Recently, a lot of attention has been paid to a single-cell analysis using microfluidic chips, since each cell is known to have several different characteristics. The microfluidic chip manipulates cells and performs high-speed and high-resolution analysis. In the meanwhile, femtosecond (fs) laser has become a versatile tool for the fabrication of microfluidic chips because the laser can modify internal volume solely at the focal area, resulting in three-dimensional (3D) microfabrication of glass materials. However, little research on surface microfabrication of materials using an fs laser has been conducted. Therefore, in this study, we demonstrate the surface microfabrication of a conventional glass slide using fs laser direct-writing for microfluidic applications. The fs laser modification, with successive wet etching using a diluted hydrofluoric (HF) acid solution, followed by annealing, results in rapid prototyping of microfluidics on a conventional glass slide for fluorescent microscopic cell analysis. Fundamental characteristics of the laser-irradiated regions in each experimental procedure were investigated. In addition, we developed a novel technique combining the fs laser direct-writing and the HF etching for high-speed and high-resolution microfabrication of the glass. After establishing the fs laser surface microfabrication technique, a 3D microfluidic chip was made by bonding the fabricated glass microfluidic chip with a polydimethylsiloxane (PDMS) polymer substrate for clear fluorescent microscopic observation in the microfluidics.

Laser Surface Modification for Copper Deposition on Polyimide

1988 ◽  
Vol 129 ◽  
Author(s):  
Y.S. Liu ◽  
H.S. Cole
Keyword(s):  
Thin Film ◽  
High Speed ◽  
High Sensitivity ◽  
Thin Film Deposition ◽  
Film Deposition ◽  
Direct Writing ◽  
Laser Direct Writing ◽  
Laser Surface Modification ◽  
Deposition Processes ◽  
Surface Modified

ABSTRACTSelective modification of surface reactivities with lasers, using either direct writing or projection method, is intrinsically a sensitive method to prepare a surface for highresolution and high-speed area selective thin film deposition. In this paper, we demonstrated the use of laser direct-writing and projection patterning techniques for selective modification of the electrochemical property of a polyimide surface. High quality and highresolution copper patterns on polyimide surfaces are produced when the surface-modified sample is subsequently placed in an electroless plating solution. These results demonstrated that the use of laser-selective-modification of surface properties in conjunction with other batch thin film deposition processes provides an attractive approach for area-selective metallization for a variety of applications in which high writing speed and high sensitivity are required.

Wavelength tunable fiber Bragg gratings fabricated by stress annealing assisted femtosecond laser direct writing

2021 ◽  
Vol 61 ◽  
pp. 102427
Author(s):  
Xiaoyan Sun ◽  
Zikun Chang ◽  
Li Zeng ◽  
Xinran Dong ◽  
Youwang Hu ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Fiber Bragg Gratings ◽  
Bragg Gratings ◽  
Direct Writing ◽  
Laser Direct Writing ◽  
Wavelength Tunable

Micropatterned Cell‐Repellent Interface Using Femtosecond Laser Direct Writing to Engineer Controlled Cell Organization

2021 ◽  
pp. 2100178
Author(s):  
Wenguang Yang ◽  
Honghui Chu ◽  
Shuxiang Cai ◽  
Wenfeng Liang ◽  
Haibo Yu ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Direct Writing ◽  
Laser Direct Writing ◽  
Cell Organization

scholarly journals Advanced Micro-Actuator/Robot Fabrication Using Ultrafast Laser Direct Writing and Its Remote Control

2020 ◽  
Vol 10 (23) ◽  
pp. 8563
Author(s):  
Sangmo Koo
Keyword(s):  
Three Dimensional ◽  
Processing Technique ◽  
Direct Writing ◽  
Laser Direct Writing ◽  
Precise Control ◽  
Two Photon ◽  
Non Invasive ◽  
Acoustic Control ◽  
Fs Laser ◽  
Invasive Control

Two-photon polymerization (TPP) based on the femtosecond laser (fs laser) direct writing technique in the realization of high-resolution three-dimensional (3D) shapes is spotlighted as a unique and promising processing technique. It is also interesting that TPP can be applied to various applications in not only optics, chemistry, physics, biomedical engineering, and microfluidics but also micro-robotics systems. Effort has been made to design innovative microscale actuators, and research on how to remotely manipulate actuators is also constantly being conducted. Various manipulation methods have been devised including the magnetic, optical, and acoustic control of microscale actuators, demonstrating the great potential for non-contact and non-invasive control. However, research related to the precise control of microscale actuators is still in the early stages, and in-depth research is needed for the efficient control and diversification of a range of applications. In the future, the combination of the fs laser-based fabrication technique for the precise fabrication of microscale actuators/robots and their manipulation can be established as a next-generation processing method by presenting the possibility of applications to various areas.

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