Thin transparent film characterization by photothermal reflectance (abstract)

2003 ◽  
Vol 74 (1) ◽  
pp. 872-872
Author(s):  
R. Li Voti ◽  
O. B. Wright ◽  
O. Matsuda ◽  
M. C. Larciprete ◽  
C. Sibilia ◽  
...  
Keyword(s):  
Transparent Film ◽  
Thin Transparent Film

Airborne Algal growth on roofs of membrane-structured residences in cold area of Japan

2020 ◽  
pp. 174425912098003
Author(s):  
Makiko Nakajima ◽  
Daisuke Masueda ◽  
Shuichi Hokoi ◽  
Takayuki Matsushita
Keyword(s):  
Algal Growth ◽  
Residential Building ◽  
Growth Conditions ◽  
Building Structure ◽  
Transparent Film ◽  
Cold Region ◽  
Algal Population ◽  
Building Facades ◽  
Cold Area ◽  
Survey Results

The discoloration of building facades due to airborne algae is observed in our surroundings. The growth conditions of these algae are not yet fully understood, and efficient measures for preventing the growth of the algae are not presently available. The objective of this study was to investigate the effects of the ambient environment and building structure on algal growth. A residential building in a cold region of Japan was surveyed. The roof was a multi-layered structure comprising a semi-transparent film, an air layer, and a layer of insulation from the outside, supported by rafters. The soiled state was visually observed by taking photographs. On the northeast (NE) and northwest (NW) roofs, several black stripes appeared 4 months after cleaning. The soiling increased in the spring and autumn. The soiling first appeared on the film backed by the rafter and then extended to the film backed by the air layer. The condensation time during the day in the rafter part was longer than that in the air-layer part. Condensation occurred during the night, but its frequency exhibited no dependence on the orientation of the roof. Algae tend to die when exposed to an environment with a temperature higher than 45°C. The NE roof had the shortest period with a surface temperature of >45°C. These measurements agreed well with the survey results, which indicated that the soiling mainly occurred on the NE and NW sides of the roofs. The time for algal growth was estimated under the assumption that algae can grow at surface temperatures ranging from 0 to 45°C, in agreement with the observed soiling. The observed soiling changes were well explained by the algal population calculated via a growth predictive model according to the algal temperature and relative humidity.

Highly Flexible and Transparent Film Heater with Electrospun Copper Conductive Network via Junction-free Structure

2021 ◽  
pp. 161191
Author(s):  
Hyeonsu Woo ◽  
Suhyeon Kim ◽  
Seungbin Yoon ◽  
Kanghyun Kim ◽  
Geon Hwee Kim ◽  
...  
Keyword(s):  
Conductive Network ◽  
Transparent Film

Temperature-controlled transparent-film heater based on silver nanowire–PMMA composite film

2016 ◽  
Vol 27 (47) ◽  
pp. 475709 ◽  
Author(s):  
Xin He ◽  
A’lei Liu ◽  
Xuyang Hu ◽  
Mingxia Song ◽  
Feng Duan ◽  
...  
Keyword(s):  
Composite Film ◽  
Silver Nanowire ◽  
Transparent Film ◽  
Temperature Controlled

Automatic interference method for measuring transparent film thickness

1993 ◽  
Vol 32 (13) ◽  
pp. 2292 ◽  
Author(s):  
A. González-Cano ◽  
E. Bernabéu
Keyword(s):  
Film Thickness ◽  
Interference Method ◽  
Transparent Film

Preparation of low-crystalline POSS containing two types of alkylammonium groups and its optically transparent film

2014 ◽  
Vol 2 (14) ◽  
pp. 2496-2501 ◽  
Author(s):  
Takahiro Tokunaga ◽  
Miki Shoiriki ◽  
Tomonobu Mizumo ◽  
Yoshiro Kaneko
Keyword(s):  
Amino Group ◽  
Transparent Film ◽  
Hydrolytic Condensation ◽  
Optically Transparent ◽  
Low Crystalline

A low-crystalline POSS containing two types of alkylammonium groups was successfully prepared by hydrolytic condensation of two types of amino group-containing organotrialkoxysilanes, i.e. AEAPTMOS and APTMOS, using aqueous CF3SO3H, forming an optically transparent film.

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