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A low-cost, easy-to-fabricate paper-based capacitance sensor with inkjet printed interdigitated electrodes is presented. The sensor enables measurements of the dielectric properties of electrode free polymer films, a quick technique for assessing the insulating quality of polymer sheets. We demonstrate the suitability of the sensor for moisture and vapor measurements, permitting direct operation of...
Thermoresponsive polymers (TRP) are attractive substrates for cell culture, as adherent cells are mechanically released from the polymer surface when the temperature is lowered below the lower critical solution temperature (LCST). In this study, cell adhesion and serum protein adsorption to P(MEO2MA-co-OEGMA) (PMO) polymer substrates was investigated. L-929 cell adhesion to PMO surfaces was markedly...
We have developed a method using a scanning tunneling microscope (STM) probe tip to control the chain polymerization of diacetylene compounds in a self-ordered layer, thereby creating conjugated polydiacetylene nanowires. When a small amount of phthalocyanine was deposited on a molecular layer of diacetylene compound, we found adsorbed and stabilized phthalocyanine single molecules. The initiation...
Nanosphere lithography has potential in many areas, and there have been many methods that deposit the colloidal suspension onto the substrate. However, it is important and still difficult to control the uniformity of the monolayer on a plane substrate. In this study, we have found a method for a uniform monolayer of polystyrene beads by confining the droplets with microwells. By simply controlling...
Substituted polythiophenes and polycarbazoles are materials of great interest as charge-carrier transport materials and have been utilized in PLED and FET applications. The layer-by-layer (LbL) self assembly has been used to fabricate polymer thin films on any substrates. The multilayer polymer thin films are constructed by alternating adsorption of anionic and cationic polymers. Polyelectrolyte multilayer...
Interfaces between liquids and solids or gases play important roles in a number of different technologies and have thus been the main focus of many theoretical and experimental studies. The discontinuous nature of physical properties at interfaces makes it demanding to develop a general theory, and most existing theories are therefore based on macroscopic continuum equations. Now, for the first time,...
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