Publications by authors named "Carsten Grassmann"

A person's body temperature is an important indicator of their health status. A deviation of that temperature by just 2 °C already has or can lead to serious consequences, such as fever or hypothermia. Hence, the development of a temperature-sensing and heatable yarn is an important step toward enabling and improving the monitoring and regulation of a person's body temperature.

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The need for more efficient health services and the trend of a healthy lifestyle pushes the development of smart textiles. Since textiles have always been an object of everyday life, smart textiles promise an extensive user acceptance. Thereby, the manufacture of electrical components based on textile materials is of great interest for applications as biosensors.

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Electrochromic devices can act as passive displays. They change their color when a low voltage is applied. Flexible and bendable hybrid textile-film electrochromic devices with poly-3,4-ethylenedioxythiophene polystyrene sulfonate (PEDOT:PSS) were prepared on polyethylene polyethylene terephthalate (PEPES) membranes using a spray coating technique.

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Article Synopsis
  • Textile-based dye-sensitized solar cells (DSSCs) can be developed using textile fabrics or electrospun nanofiber mats as the foundation for their layers.
  • Electrospun polyacrylonitrile (PAN) nanofiber mats, coated with a conductive polymer (PEDOT:PSS), were used to create counter electrodes, achieving efficiencies similar to traditional glass-based DSSCs and better than those with cotton electrodes.
  • Adding more layers of PEDOT:PSS improved efficiency, while post-treatment with acids or DMSO slightly enhanced energy conversion, with HCl showing the most beneficial effect.
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The determination of all possible low-lying energy conformers of flexible molecules is of fundamental interest for various applications. It necessitates a reliable conformational search that is able to detect all important minimum structures and calculates the energies on an adequate level of theory. This work presents a strategy to identify low-energy conformers using arginine as an example by means of a force-field based conformational search in combination with high-level geometry optimizations (RI-MP2/TZVPP+).

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