Femtosecond-laser direct writing for spatially localized synthesis of PPV

2017 ◽  
Vol 5 (14) ◽  
pp. 3579-3584 ◽  
Author(s):  
Oriana I. Avila ◽  
Juliana M. P. Almeida ◽  
Franciele R. Henrique ◽  
Ruben D. Fonseca ◽  
Gustavo F. B. Almeida ◽  
...  
Keyword(s):  
Laser Pulses ◽  
Photon Absorption ◽  
Direct Laser Writing ◽  
Direct Writing ◽  
Laser Direct Writing ◽  
Thermal Reactions ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Direct Laser ◽  
Fs Laser

Conversion of PTHT into PPV is achieved by direct laser writing. Fs-laser pulses induce photo-thermal reactions due to two-photon absorption, resulting in the microscopic control of PPV polymerization. Such methodology is a promising way towards the fabrication of arbitrary polymeric microcircuits.

Fabrication of gold micro/nanostructures by femtosecond laser direct writing and chemical etching

2014 ◽  
Vol 23 (04) ◽  
pp. 1450048 ◽  
Author(s):  
Hongxin Zhang ◽  
Tianqing Jia ◽  
Kan Zhou ◽  
Jukun Liu ◽  
Donghai Feng ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Chemical Etching ◽  
Ethanol Solution ◽  
Photon Absorption ◽  
Direct Laser Writing ◽  
Direct Writing ◽  
Laser Writing ◽  
Two Photon Absorption ◽  
Direct Laser ◽  
Pentaerythritol Triacrylate

In this paper, we report gold micro/nanostructures fabricated by a method called lithographically patterned nanostructure by chemical etching (LPNCE). In the LPNCE method, the photoresist layer, composed of pentaerythritol triacrylate (PETA, monomer) and isopropyl thioxanthone (ITX, photoinitiator), is dropped on gold film, and subsequently polymerized via two-photon absorption of 800 nm femtosecond laser. Micro/nanostructures are fabricated by the direct laser writing. The unpolymerized photoresist is washed by isopropanol, and the exposed gold is dissolved by KI 3 aqueous solution. Finally, polymers are removed by NaOH ethanol solution. Arbitrary 2D gold micro/nanostructures can be fabricated quickly by the direct laser writing and chemical etching method. The good electro-conductibility of these micro/nanostructures guarantees wide applications in micro-electronic devices, plasmonics and biosensors, etc.

Dual wavelength two-photon absorption in two-beam laser direct writing silver nanowire and the conductivity enhancement

2017 ◽  
Vol 110 (26) ◽  
pp. 263113 ◽  
Author(s):  
Gui-Cang He ◽  
Mei-Ling Zheng ◽  
Xian-Zi Dong ◽  
Jie Liu ◽  
Feng Jin ◽  
...  
Keyword(s):  
Silver Nanowire ◽  
Dual Wavelength ◽  
Photon Absorption ◽  
Direct Writing ◽  
Laser Direct Writing ◽  
Conductivity Enhancement ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Beam Laser

Three-dimensional buried polymer waveguides via femtosecond direct laser writing with two-photon absorption

2014 ◽  
Author(s):  
Duc H. H. Nguyen ◽  
Kerstin Kaleta ◽  
Stefan Hengsbach ◽  
Ute Ostrzinski ◽  
Karl Pfeiffer ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Photon Absorption ◽  
Direct Laser Writing ◽  
Polymer Waveguides ◽  
Laser Writing ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Direct Laser

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.

Two-photon absorption and fluorescence in a spherical micro-cavity illuminated by using two laser pulses: numerical simulations

2002 ◽  
Vol 208 (4-6) ◽  
pp. 371-375 ◽  
Author(s):  
Loı̈c Méès ◽  
Jean-Pierre Wolf ◽  
Gérard Gouesbet ◽  
Gérard Gréhan
Keyword(s):  
Numerical Simulations ◽  
Laser Pulses ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Micro Cavity

Autocorrelation measurements of modelocked Nd:YLF laser pulses using two-photon absorption waveguide autocorrelator

1997 ◽  
Vol 9 (5) ◽  
pp. 645-647 ◽  
Author(s):  
M.M. Karkhanehchi ◽  
C.J. Hamilton ◽  
J.H. Marsh
Keyword(s):  
Laser Pulses ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon

Plasmon-Enhanced Two-Photon Absorption of Infrared Femtosecond Laser Pulses in Thin Gold Films

JETP Letters ◽  
2019 ◽  
Vol 109 (6) ◽  
pp. 382-386 ◽  
Author(s):  
S. I. Kudryashov ◽  
P. A. Danilov ◽  
S. G. Bezhanov ◽  
A. A. Rudenko ◽  
A. A. Ionin ◽  
...  
Keyword(s):  
Femtosecond Laser ◽  
Laser Pulses ◽  
Femtosecond Laser Pulses ◽  
Photon Absorption ◽  
Gold Films ◽  
Two Photon Absorption ◽  
Two Photon

scholarly journals Intensity detection of picosecond ruby laser pulses by two photon absorption

1981 ◽  
Vol 36 (5) ◽  
pp. 419-422 ◽  
Author(s):  
W. Blau ◽  
A. Penzkofer
Keyword(s):  
Ruby Laser ◽  
Laser Pulses ◽  
Photon Absorption ◽  
Two Photon Absorption ◽  
Two Photon
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