Processing Characteristics and Parametric Effects on Picosecond Laser Nanoscaled Patterning of Poly(methyl methacrylate)

2020 ◽  
Vol 20 (8) ◽  
pp. 5142-5146
Author(s):  
Ching-Yen Ho ◽  
Zui-Wei Liu ◽  
Xian-Liang Chen ◽  
Dongkai Qiao ◽  
Chang-Wei Xiong ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Laser Fluence ◽  
Electronic Devices ◽  
Pulsed Laser ◽  
Picosecond Laser ◽  
Ablation Rate ◽  
Poly Methyl Methacrylate ◽  
Nanoscale Patterning ◽  
Parametric Effects ◽  
Noncontact Processing

Characteristics of picosecond laser processing for poly(methyl methacrylate) (PMMA) are studied in this text. Poly(methyl methacrylate) (PMMA) can be applied to micro- or nano-scale electronic devices. Short-pulsed laser is usually used for noncontact processing of nanoscale patterning of poly(methyl methacrylate) (PMMA). This study considers optical energy of laser to be transferred into decomposition energy of poly(methyl methacrylate) (PMMA). Using the condition of the energy balance at the decomposition interface, the variation of the ablation rate with the logarithm of the laser fluence is calculated for poly(methyl methacrylate) (PMMA) and agrees with the measured data. This study also discusses parametric effects of poly(methyl methacrylate) (PMMA) on the variation of the ablation rate with the logarithm of the laser fluence.

Three-Dimensional Optical Bit Memory in Sm(DBM)3Phen-Doped and Un-Doped Poly(methyl methacrylate)

2011 ◽  
Vol 284-286 ◽  
pp. 2251-2254
Author(s):  
Zhao Gang Nie ◽  
Xin Zhong Li ◽  
Yu Ping Tai ◽  
Ki Soo Lim ◽  
Myeongkyu Lee
Keyword(s):  
Refractive Index ◽  
Methyl Methacrylate ◽  
Signal To Noise Ratio ◽  
Three Dimensional ◽  
Pulsed Laser ◽  
High Signal ◽  
Signal To Noise ◽  
Fluorescent Signal ◽  
Poly Methyl Methacrylate ◽  
Noise Ratio

The feasibility of three-dimensional optical bit memory is demonstrated by using the change of fluorescence and refractive index in Sm(DBM)3Phen-doped and un-doped Poly(methyl methacrylate). After a femtosecond pulsed laser irradiation, a refractive-index bit and a fluorescent bit can be formed at the same position inside the bulk sample. Multilayer patterns recorded by tightly focusing the pulsed laser beam were read out by a reflection-type fluorescent confocal microscope, which can detect the reflection signal and also the fluorescent signal of the stored bits. The signal-to-noise ratio via the two retrieval modes was compared as a function of recording depth. The stored bits were retrieved with a high signal-to-noise ratio in the absence of any crosstalk and the detection of the fluorescent signal enables retrieval of the stored bits with a higher S/N ratio.

The improved interfacial polarization in a poly(vinylidene fluoride-co-chlorotrifluoroethylene) composite with hyperbranched polyethylene-graft-poly(methyl methacrylate) modified boron nitride nanosheets

2020 ◽  
Vol 8 (37) ◽  
pp. 12819-12828
Author(s):  
Huijian Ye ◽  
Wenqing Liu ◽  
Xuanhe Zhang ◽  
Lixin Xu
Keyword(s):  
Boron Nitride ◽  
Methyl Methacrylate ◽  
Power Density ◽  
Vinylidene Fluoride ◽  
Electronic Devices ◽  
Interfacial Polarization ◽  
Large Power ◽  
Poly Methyl Methacrylate ◽  
Boron Nitride Nanosheets ◽  
Poly Vinylidene Fluoride

Polymer capacitors are promising candidates for the miniaturization and integration of electronic devices due to their flexibility and large power density.

Picosecond Laser Ablation of Polydimethylsiloxane (PDMS)

2009 ◽  
Author(s):  
Hansong Zeng ◽  
Yi Zhao ◽  
Benxin Wu ◽  
Chris Taylor ◽  
Ronald L. Jacobsen ◽  
...  
Keyword(s):  
Laser Ablation ◽  
Laser Fluence ◽  
Picosecond Laser ◽  
Ablation Rate ◽  
Pulse Number ◽  
Hole Diameter ◽  
Replica Molding

Picosecond laser ablation of Polydimethylsiloxane (PDMS) has been studied experimentally. The measurements show that laser ablation rate per pulse increases with laser fluence and pulse number. The laser-drilled hole diameter increases with pulse number, and it saturates above certain pulse number for low fluence. The study shows that picosecond laser ablation may provide a good solution for micromachining PDMS, which is more flexible and versatile than the replica molding technique.

scholarly journals Enhanced UV protection and water adsorption properties of transparent poly(methyl methacrylate) films through incorporation of amorphous magnesium carbonate nanoparticles

2021 ◽  
Vol 28 (8) ◽  
Author(s):  
Jiaojiao Yang ◽  
Junxin Wang ◽  
Maria Strømme ◽  
Ken Welch
Keyword(s):  
Methyl Methacrylate ◽  
Uv Light ◽  
Electronic Devices ◽  
Magnesium Carbonate ◽  
Uv Degradation ◽  
Poly Methyl Methacrylate ◽  
Visible Wavelengths ◽  
Uv C ◽  
Better Than ◽  
Adsorbed Moisture

AbstractA simple solution casting approach was used to obtain transparent and flexible poly(methyl methacrylate) (PMMA) films incorporated with 1 – 4% by weight amorphous magnesium carbonate nanoparticles. Optical transparency was retained in visible wavelengths, while transmittance in the UV-B region was reduced by 22% at 310 nm and 58% at 256 nm with the addition of 4 wt. % nanoparticles. Furthermore, the incorporation of the nanoparticles was shown to provide protection for the films under UV-C irradiation (254 nm wavelength, 5 mW cm−2), with the amount of UV degradation decreasing with increasing concentration of nanoparticles. Films with incorporated nanoparticles were also shown to be able to retain adsorbed moisture much better than neat PMMA films; whereas neat PMMA films did not retain moisture, approximately 50% of the adsorbed moisture was retained in films containing 4 wt. % nanoparticles. These enhanced properties of PMMA are of great interest in applications such as flexible and transparent screens for personal electronic devices that require protection from both UV light and moisture.

One-Pot Hybrid SnO2/Poly(methyl methacrylate) Nanocomposite Formation through Pulsed Laser Irradiation

ChemPhysChem ◽  
2017 ◽  
Vol 18 (12) ◽  
pp. 1635-1641 ◽  
Author(s):  
Gianvito Caputo ◽  
Alice Scarpellini ◽  
Francisco Palazon ◽  
Athanassia Athanassiou ◽  
Despina Fragouli
Keyword(s):  
Methyl Methacrylate ◽  
Laser Irradiation ◽  
Pulsed Laser ◽  
One Pot ◽  
Poly Methyl Methacrylate ◽  
Pulsed Laser Irradiation

ANTIMICROBIAL TESTING, MORPHOLOGICAL CHARACTERIZATION, AND SURFACE POTENTIAL MAPPING OF SILVER-POLY-(METHYL METHACRYLATE) NANOCOMPOSITE FILMS MADE THROUGH MATRIX-ASSISTED PULSED LASER DEPOSITION AGAINST S. AUREUS

Nano LIFE ◽  
2010 ◽  
Vol 01 (01n02) ◽  
pp. 145-152
Author(s):  
MISHAE KHAN ◽  
SHAUN D. GITTARD ◽  
ROGER J. NARAYAN ◽  
DANIEL M BUBB
Keyword(s):  
Thin Films ◽  
Antimicrobial Activity ◽  
Methyl Methacrylate ◽  
Pulsed Laser Deposition ◽  
Surface Potential ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Laser Evaporation ◽  
Poly Methyl Methacrylate ◽  
Nanocomposite Thin Films

Silver-poly(methyl methacrylate) nanocomposite thin films were deposited on silicon substrates by means of matrix-assisted pulsed laser deposition. Atomic force microscopy revealed that the surface morphologies of the silver-poly(methyl methacrylate) nanocomposite thin films were dependent on the matrix-assisted pulsed laser evaporation processing parameters. Films produced using 4% (by weight of solvent) silver nanoparticles exhibited the highest antimicrobial activity. Antimicrobial activity of the thin films was dependent on the silver concentration, the microenvironment created by the polymer–silver interaction, and the surface potential.

Mechanism of poly(methyl methacrylate) film formation by pulsed laser deposition

2006 ◽  
Vol 100 (1) ◽  
pp. 014906 ◽  
Author(s):  
Erik Süske ◽  
Thorsten Scharf ◽  
Hans-Ulrich Krebs ◽  
Thomas Junkers ◽  
Michael Buback
Keyword(s):  
Methyl Methacrylate ◽  
Pulsed Laser Deposition ◽  
Film Formation ◽  
Pulsed Laser ◽  
Laser Deposition ◽  
Poly Methyl Methacrylate
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