Postdoc position in spectroscopic characterization of nanocellulose for optoelectronics
6 months ago
Project description This postdoctoral position is a full-time temporary employment opportunity for two years. The project is a part of the Wallenberg Wood Science Center The goal of the project is to explore and adjust the dielectric properties of nanocellulose.
Nanocellulose is used in various applications due to its impressive mechanical properties, thermal stability, and degradability. The high symmetry of nanocellulose results in the generation of high net value dipole moments of C-H and C-OH bonds. This leads to high dielectric properties that, when interacting with electromagnetic waves impact light absorption, reflection, refraction, and transmission of the waves. The main tasks of the project will involve surface modification of nanocrystalline cellulose, creating films from it, and characterizing the dielectric properties using broadband dielectric spectroscopy and other relevant methods.
In the project nanocrystalline cellulose (CNC) will be used as the cellulose material. An initial part of the project is to characterize and surface functionalize the CNC. The surface modification is intended to promote uniform CNC aggregation during film formation. Since the alignment of crystals depends on how the film is prepared, different methodologies for film formation must be considered. The overall goal is to find correlations between dielectric properties, alignment of the crystals, and the surface properties of the crystallites in order to design films with tailor made dielectric properties. A key parameter in this process is to develop methodologies for creating interphases that provide the overall structure with flexibility, strength, and excellent optical properties such as transparency or uniform (tunable) structural color.
The Wallenberg Wood Science Center (WWSC) is a research center dedicated to achieving scientific excellence in the development of new materials from trees. The center aims to generate knowledge and build competence and expertise to drive innovative and sustainable value creation from forest resources. WWSC is a multidisciplinary collaborative effort between KTH, Chalmers, and Linköping University, made possible by a donation from the Knut and Alice Wallenberg Foundation. The forest industry also supports WWSC through the national platform Treesearch.
Information about the division and the department The project will take place at Chalmers , under . Division of Chemistry and Biochemistry has research within analytical, physical, theoretical, inorganic and organic chemistry. It is an interdisciplinary group with appr 10 research groups focusing on synthesis and characterization of materials. Our goal is to correlate molecular structure with properties, function and activity of studied materials and systems.
Major responsibilities As a postdoc, you will be expected to perform spectroscopic characterization of prepared Nanocellulose films, evaluate, analyze and interpret data from measurements. Furthermore, you will be responsible for experimental planning, sample preparation, characterization, data handling, writing of publications and communications of results from the project. You may also take part in supervision of PhD and master students.
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