Polystyrene thin film

Giordano, M. Russo, M. Cusano, A. Mensitieri, G. Guerra, G., Syndiotactic polystyrene thin film as sensitive layer for an optoelectronic chemical sensing device, Sens. Actuators B 2005, 109, 177 184... 

Spin-Coating of Polystyrene Thin Films as an Advanced Undergraduate Experiment 121... 

Figure 28 Structures of photochromic SP and PM, and absorption spectra of SP or PM dispersed in a polystyrene thin film with a weight ratio of 1 10 before and after UV irradiation.

Figure 29 Spectra of (a) refractive index and (b) extinction coefficient of polystyrene thin film containing SP and PM. The former is based on the observed difference absorption spectra shown in Fig. 28 before and after UV irradiation. The former was calculated from (b) by Kramers-Kronig transformation.

Very recently Kouchi et al. constructed an ion beam pulse radiolysis system and use it for the study of the LET effect in irradiated polystyrene thin films [106]. The nanosecond pulsed MeV ion beam with the variable repetition rate was obtained by chopping ion beams from a Van de Graaff. Time profiles of the excimer fluorescence from polystyrene thin films, excited by He+ impact, were... 

Recent progress in the radiation effects of ion beams on polymers are reviewed briefly. Our recent work on the radiation effects of ion beams on polystyrene thin films on silicon wafers and time resolved emission studies on polymers are described. 

The investigation of the ion beam interaction with polystyrene by means of ion beam pulse radiolysis has the advantage that the reactive intermediates can be directly detected. Time profiles of the excimer fluroescence from ion irradiated polystyrene were measured using the polystyrene thin films. Thus, the transient phenomenon excited by the ion with a definite kinetic energy was observed. 

The same polystyrene thin films described in Sect. 2.1. were used. Thus, the transient phenomenon excited by the ion with a definite kinetic energy was observed. 

In ion-beam irradiated polystyrene, some kinds of reactive intermediates are produced. The excimer, which is one of the reactive intermediates, emits intense fluorescence. Thus, we measured the time profiles of the excimer fluorescence (328.5 nm) from ion irradiated polystyrene thin films. One of the results is shown in Fig. 6a and b for irradiation with 0.6 MeV He+ (several hundred pA beam current). In Fig. 6a, the irradiation time dependence of the excimer fluorescence intensity is shown. In Fig. 6b, the time profile (I) was recorded with an irradiation time of 0 s-139 s (low dose-time profile), and (II) in the irradiation time of 1839 s- 3839 s (high dose-time profile). The following experimental results were obtained. 

Conversely, on a time scale of minutes, both the real part of the complex sample capacity (and correspondingly s ) and the dielectric loss increased when a polystyrene thin film (20 nm) was replaced from a dry nitrogen atmosphere and exposed to ambient water vapor at room temperature (Fig. 10). 

Figure 11.3. S parameter from DBES (left) and the o-Ps intensity (I3) from PAL vs positron incident energy of polystyrene thin film on Cu substrate [44, 10], The line was fit to a simple diffusion model from the VEPFIT program [51].

Fukao K, Koizumi H (2007) Aging phenomena in polystyrene thin films. Eur Phys J Special Topics 141 199-202... 

Inoue R, Kawashima K, Matsui K, Kanaya T, Nishida K, Matsuba G, Hino M (2011) Distributions of glass-transition temperature and thermal expansivity in multilayered polystyrene thin films studied by neutron reflectivity. Phys Rev E 83 021801... 

Figure 3. Rq>resentative deflection vs. distance curves for polystyrene thin film, sapphire single crystal, rubber and low density polyethylene fllm obtained with a silicon nitride cantilever (k = 0.58 N/m). ITie calibration for lever deflection is IV = 15 nN.

Duan Y, Jiang Y, Jiang S, Li L, Yan S, Schultz JM. Depletion-induced nonhirefringent banding in thin isotactic polystyrene thin films. Macromolecules 2004 37 9283-9286. 

Y.-S. Seo, S. Satija, No intrinsic depletion layer on a polystyrene thin film at a water interface, Langmuir 22 (2006) 7113-7116. 

Boucher, V.M., Cangialosi, D., Yin, H., Schonhals, A., Alegria, A., Colmenero, J. Tg depression and invariant segmental dynamics in polystyrene thin films. Soft Matter 8, 5119 (2012)... 

Masson, J.L., Green, P.F. Viscosity of entangled polystyrene thin film melts film thickness... 

Miyazaki, T., Inoue, R., Nishida, K., Kanaya, T. X-ray reflectivity studies on glass transition of free standing polystyrene thin films. Eur. Phys. J. Spec. Top. 141, 203-206 (2007)... 

Wallace W, Tan NB, Wu W, Satija S (1998) Mass density of polystyrene thin films measured by twin neutron reflectivity. J Chem Phys 108(9) 3798-3804... 

Figure 12 Fluorescence decay time trajectory of an individual molecule and the corresponding fluorescence decay time distribution of 1,1 -diocatedecyl-3,3,3 ,3 -tetramethylindo-dicarbocyanine (DID) in a polystyrene thin film.

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