A Mass Spectrometric and Ion Energy Study of the Continuous Wave Plasma Polymerization of Acrylic Acid

Langmuir ◽  
2000 ◽  
Vol 16 (13) ◽  
pp. 5654-5660 ◽  
Author(s):  
David B. Haddow ◽  
Richard M. France ◽  
Robert D. Short ◽  
James W. Bradley ◽  
David Barton
Keyword(s):  
Acrylic Acid ◽  
Plasma Polymerization ◽  
Continuous Wave ◽  
Mass Spectrometric ◽  
Ion Energy

The effect of ion energy upon plasma polymerization deposition rate for acrylic acid

2003 ◽  
pp. 348-349 ◽  
Author(s):  
David Barton ◽  
Robert D. Short ◽  
Stuart Fraser ◽  
James W. Bradley
Keyword(s):  
Acrylic Acid ◽  
Deposition Rate ◽  
Plasma Polymerization ◽  
Ion Energy

Mechanistic approach to the plasma polymerization of acrylic acid by a pulsed MW(ECR) plasma

1998 ◽  
Vol 98 (1-3) ◽  
pp. 875-878 ◽  
Author(s):  
J. Behnisch ◽  
F. Mehdorn ◽  
A. Holländer ◽  
H. Zimmermann
Keyword(s):  
Acrylic Acid ◽  
Plasma Polymerization ◽  
Ecr Plasma ◽  
Mechanistic Approach

scholarly journals Time-Resolved Quadrupole Mass Spectrometric Studies on Pulsed Laser Ablation of TiO2

1999 ◽  
Vol 18 (3) ◽  
pp. 99-109 ◽  
Author(s):  
Yongxin Tang ◽  
Zhenhui Han ◽  
Qizong Qin
Keyword(s):  
Laser Ablation ◽  
Continuous Wave ◽  
Center Of Mass ◽  
Pulsed Laser ◽  
Pulsed Laser Ablation ◽  
Ionic Species ◽  
Mass Spectrometric ◽  
Quadrupole Mass ◽  
Time Resolved ◽  
Ambient Oxygen

Pulsed laser ablation of TiO2 at 355 nm and 532 nm has been investigated using an angleand time-resolved quadrupole mass spectrometric technique. The major ablated species include O (m/e = 16), O2 (m/e = 32), Ti (m/e = 48), TiO (m/e = 64) and TiO2 (m/e = 80). The time-of-flight (TOF) spectra of ablated species are measured for the ionic and neutral ablated species, and they can be fitted by a Maxwell – Boltzmann (M – B) distribution with a center-of-mass velocity. The measured angular distributions of the ionic species (O+ and Ti+) and the neutral species (O and Ti) can be fitted with cos⁡nθ and a cos⁡θ + (1−a)cos⁡nθ, respectively. In addition, a continuous wave oxygen molecular beam is introduced into the ablated plume, and the enhancement of the signal intensities of TiO is observed. It implies that the ablated Ti atoms/ions species can react with ambient oxygen molecules in the gas phase. In the meanwhile, the physicochemical mechanism of pulsed laser ablation of TiO2 is discussed.

Plasma Surface Modification of Silica and its Application in Epoxy Molding Compounds for Large-Scale Integrated Circuits Packaging

2010 ◽  
Vol 158 ◽  
pp. 184-188 ◽  
Author(s):  
Ming Shan Yang ◽  
Lin Kai Li ◽  
Jian Guo Zhang
Keyword(s):  
Surface Modification ◽  
Acrylic Acid ◽  
Integrated Circuits ◽  
Plasma Polymerization ◽  
High Speed ◽  
Large Scale ◽  
Treatment Time ◽  
Rf Plasma ◽  
Formaldehyde Resin ◽  
Molding Compounds

The surface modification of silica for epoxy molding compounds (EMC) was conducted by plasma polymerization using RF plasma (13.56MPa), and the modification factors such as plasma power, gas pressure and treatment time were investigated systematically in this paper. The monomers utilized for the plasma polymer coatings were pyrrole, 1,3-diaminopropane, acrylic acid and urea. The plasma polymerization coating of silica was characterized by FTIR, contact angle. Using the silica treated by plasma as filler, ortho-cresol novolac epoxy as main resin, novolac phenolic-formaldehyde resin as cross-linking agent and 2-methylmizole as curing accelerating agent, the EMCs used for the packaging of large-scale integrated circuits were prepared by high-speed pre-mixture and twin roller mixing technology. The results have shown that the surface of silica can be coated by plasma polymerization of pyrrole, 1,3-diaminopropane, acrylic acid and urea, and the comprehensive properties of EMC were improved.

scholarly journals Nanomaterials and continuous wave laser-based efficient desorption for atmospheric pressure mass spectrometric imaging of live hippocampal tissue slices

RSC Advances ◽  
2018 ◽  
Vol 8 (15) ◽  
pp. 8021-8025 ◽  
Author(s):  
Jae Young Kim ◽  
Eun Seok Seo ◽  
Hee Jin Lim ◽  
Hyunmin Kim ◽  
Ji-Won Park ◽  
...  
Keyword(s):  
Atmospheric Pressure ◽  
Continuous Wave ◽  
Mass Spectrometric ◽  
Continuous Wave Laser ◽  
Mass Spectrometric Imaging ◽  
Tissue Slices ◽  
Hippocampal Tissue ◽  
Wave Laser ◽  
532 Nm ◽  
Resolution Mass

Micrometer-resolution mass spectrometric imaging of live hippocampal tissue is achieved with a highly efficient desorption of biomolecules using a 532 nm continuous wave laser and gold nanoparticles or graphene oxide as an energy transporter.

A Study on Plasma Polymerization of Acrylic Acid Using APF Plasma Focus Device

2010 ◽  
Vol 30 (2) ◽  
pp. 184-189 ◽  
Author(s):  
M. H. S. Alavi ◽  
M. Habibi ◽  
R. Amrollahi ◽  
F. Afshar Taromi
Keyword(s):  
Acrylic Acid ◽  
Plasma Focus ◽  
Plasma Polymerization ◽  
Plasma Focus Device

scholarly journals Plasma Treated High-Density Polyethylene (HDPE) Medpor Implant Immobilized with rhBMP-2 for Improving the Bone Regeneration

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Jin-Su Lim ◽  
Min-Suk Kook ◽  
Seunggon Jung ◽  
Hong-Ju Park ◽  
Seung-Ho Ohk ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Plasma Polymerization ◽  
High Density ◽  
Bone Morphogenetic Protein 2 ◽  
Carboxyl Groups ◽  
Alkaline Phosphatase Assay ◽  
Morphogenetic Protein ◽  
Human Bone Morphogenetic Protein ◽  
Generation Capacity ◽  
Phosphatase Assay

We investigate the bone generation capacity of recombinant human bone morphogenetic protein-2 (rhBMP-2) immobilized Medpor surface through acrylic acid plasma-polymerization. Plasma-polymerization was carried out at a 20 W at an acrylic acid flow rate of 7 sccm for 5 min. The plasma-polymerized Medpor surface showed hydrophilic properties and possessed a high density of carboxyl groups. The rhBMP-2 was immobilized with covalently attached carboxyl groups using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide and N-hydroxysuccinimide. Carboxyl groups and rhBMP-2 immobilization on the Medpor surface were identified by Fourier transform infrared spectroscopy. The activity of Medpor with rhBMP-2 immobilized was examined using an alkaline phosphatase assay on MC3T3-E1 cultured Medpor. These results showed that the rhBMP-2 immobilized Medpor increased the level of MC3T3-E1 cell differentiation. These results demonstrated that plasma surface modification has the potential to immobilize rhBMP-2 on polymer implant such as Medpor and can be used for the binding of bioactive nanomolecules in bone tissue engineering.

Plasma deposition and characterization of acrylic acid thin film on ZnO nanoparticles

2002 ◽  
Vol 17 (10) ◽  
pp. 2555-2560 ◽  
Author(s):  
Donglu Shi ◽  
Peng He ◽  
Jie Lian ◽  
Lumin Wang ◽  
Wim J. van Ooij
Keyword(s):  
Thin Film ◽  
Acrylic Acid ◽  
Plasma Polymerization ◽  
Plasma Deposition ◽  
Plasma Power ◽  
Irregular Shapes ◽  
Transmission Electron ◽  
Average Size ◽  
Secondary Ion

Acrylic acid polymer thin films were deposited on the surfaces of nanoparticles of ZnO using a plasma polymerization treatment. The average size of nanoparticles was on the order of 50 nm in irregular shapes. High-resolution transmission electron microscopy (HRTEM) experiments showed that an extremely thin film of the acrylic acid layer (15 nm) was uniformly deposited on the surfaces of the nanoparticles. The HRTEM results were confirmed by time-of-flight secondary ion mass spectroscopy. The effect of plasma power on the polyacrylic thin film was studied by Fourier transform infrared experiments. The deposition mechanisms and the effects of plasma treatment parameters are discussed.

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