Optical Bistability of Terthiophene/Poly(methyl methacrylate) Composite Film Prepared Using Spin-Coating

2008 ◽  
Vol 47 (1) ◽  
pp. 446-449 ◽  
Author(s):  
Shizuyasu Ochiai ◽  
Koji Isogai ◽  
Kenzo Kojima ◽  
Asao Ohashi ◽  
Teruyoshi Mizutani
Keyword(s):  
Methyl Methacrylate ◽  
Composite Film ◽  
Spin Coating ◽  
Optical Bistability ◽  
Poly Methyl Methacrylate

scholarly journals PREPARATION OF POLY (METHYL METHACRYLATE) THIN FILMS BY SPIN COATING TECHNIQUE FOR OTFT AND WOUND HEALING APPLICATIONS

2018 ◽  
Vol 5 (1) ◽  
pp. 20-22
Author(s):  
Chandar Shekar B ◽  
Ranjit Kumar R ◽  
Dinesh K.P.B ◽  
Sulana Sundari C ◽  
Punithavathi K
Keyword(s):  
Thin Films ◽  
Methyl Methacrylate ◽  
Spin Coating ◽  
Thin Film Transistors ◽  
Amorphous Structure ◽  
Spin Coating Technique ◽  
Prepared Film ◽  
Poly Methyl Methacrylate ◽  
Coating Technique ◽  
Glass Slides

Thin films of poly (methyl methacrylate) (PMMA) were prepared on cleaned glass slides by using spin coating technique. The prepared films were identified by using FTIR spectrum. Surface morphology of the coated films was studied by using SEM and AFM. Both as grown and annealed films showed smooth and amorphous structure. It also revealed the absence of pits, pin holes and dendritic features in the surface. Both as grown and annealed films showed very low RMS roughness value. The morphology analysis revealed that the prepared film could be used as dielectric layer in thin film transistors and as drug delivery system forwound healing.

Direct observation of morphological development during the spin-coating of polystyrene-poly(methyl methacrylate) polymer blends

2013 ◽  
Vol 51 (11) ◽  
pp. 875-881 ◽  
Author(s):  
Daniel T. W. Toolan ◽  
Ehtsham ul Haq ◽  
Alan Dunbar ◽  
Stephen Ebbens ◽  
Nigel Clarke ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Polymer Blends ◽  
Direct Observation ◽  
Spin Coating ◽  
Morphological Development ◽  
Poly Methyl Methacrylate

Electrical Resistance Response of Carbon Nanotube / PMMA / PVAc Composite Sensors to Organic Vapours at Low Vapour Concentrations

2007 ◽  
Vol 334-335 ◽  
pp. 809-812
Author(s):  
Dong Lin Zhao ◽  
Hong Mei Chai ◽  
Yun Fang Liu ◽  
Zeng Min Shen
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Methyl Methacrylate ◽  
Composite Film ◽  
Vinyl Acetate ◽  
Electrical Resistance ◽  
Resistance Response ◽  
Organic Vapors ◽  
Poly Methyl Methacrylate ◽  
Nanotube Composites

Thin films of poly(methyl methacrylate) (PMMA)，poly(vinyl acetate) (PVAc) and carbon nanotube composites were produced by different coating methods. The best way to produce the carbon nanotube / PMMA / PVAc composite film with conductive network is dispersing carbon nanotubes in PMMA and PVAc by ultrasonic and by solution casting. Electrical resistance responses of carbon nanotube / PMMA / PVAc composite sensors against various organic vapors at low concentrations are investigated. The experimental results indicate that the composites have high selectivity to various organic vapors at the same concentration. In addition, the electric resistance response of the composites against organic vapors takes place in step with their vapor adsorption procedure. Compatible blends of poly(methyl methacrylate) and poly(vinyl acetate) would be a good candidate to produce a series of electrically conducting carbon nanotubes composite film whose resistance is sensitive to the nature and concentration of an analyte in the vapor phase. The results indicate that the carbon nanotube / PMMA / PAVc composite film can be used as a novel organic vapor sensor to detect, quantify and discriminate various organic vapors.

scholarly journals Evolution of Surface Morphology of Spin-Coated Poly(methyl methacrylate) Thin Films

Polymers ◽  
2021 ◽  
Vol 13 (13) ◽  
pp. 2184
Author(s):  
Navid Chapman ◽  
Mingyu Chapman ◽  
William B. Euler
Keyword(s):  
Surface Morphology ◽  
Methyl Methacrylate ◽  
Spin Coating ◽  
Film Surface ◽  
Solution Concentration ◽  
Poly Methyl Methacrylate ◽  
Thin Film Surface ◽  
Aspect Ratios ◽  
Convective Instabilities ◽  
Rayleigh Benard

The morphology of sub-micron poly(methyl methacrylate) films coated to glass supports by spin coating from toluene is examined using surface profilometry. Wrinkled surfaces with local quasi-sinusoidal periodicity were seen on the surfaces of films with thicknesses of larger than 75 nm. The surface wrinkles had large aspect ratios with wavelengths in the tens of microns and amplitudes in the tens of nanometers. Wrinkles that formed during spin-coating are attributed to surface perturbations caused by Rayleigh–Bénard–Marangoni convective instabilities. The effects of film thickness, coating solution concentration, and drying rate on the thin film surface morphology are investigated. The results can be used to prepare surfaces with controlled morphology, either smooth or with periodic wrinkles.

Positron Implantation and Transmission Experiments on Free-Standing Nanometric Polymer Films

2008 ◽  
Vol 607 ◽  
pp. 105-107
Author(s):  
Carlos A. Palacio ◽  
Jérémie De Baerdemaeker ◽  
Danny Segers ◽  
Khaled M. Mostafa ◽  
Dries Van Thourhout ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Polymer Films ◽  
Spin Coating ◽  
Free Standing ◽  
Implantation Energy ◽  
Poly Methyl Methacrylate ◽  
S Parameter

Positron transmission experiments were performed on free-standing poly(methyl-methacrylate) (PMMA) and polystyrene (PS) films of nanometric thicknesses made by spin coating. The power_law equation z1/2(E) )=(α/ρ)En was determined from the measurements of the S-parameter as a function of the positron implantation energy. These transmission experiments indicate that n = 1.90(±0.08) and α = 1.33(±0.10) μg cm-2 which deviates from the values found by Algers et al. (n = 1.71(±0.05) and α = 2.8(±0.2) μg cm-2) and the commonly used parameters (n = 1.6 and α = 4.0 μg cm-2).

The effects of solvents on the properties of ultra-thin poly (methyl methacrylate) films prepared by spin coating

2013 ◽  
Vol 546 ◽  
pp. 180-184 ◽  
Author(s):  
T. Tippo ◽  
C. Thanachayanont ◽  
P. Muthitamongkol ◽  
C. Junin ◽  
M. Hietschold ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Spin Coating ◽  
Poly Methyl Methacrylate
Sign in / Sign up

Export Citation Format

Share Document