the research in new organic π-conjugated molecules with specific properties has become one of the most interesting topics in fields of materials chemistry. these materials are promising for optoelectronic device technology such as solar cells. on the other hand, the use of low band gap materials is a viable method for better harvesting of the solar spectrum and increasing its efficiency. the co...

The fundamental opto-electronic properties of organic-inorganic hybrid perovskites are strongly affected by their structural parameters. These parameters are particularly critical in formamidinium lead iodide (FAPbI3), in which its large structural disorder leads to a non-perovskite yellow phase that hinders its photovoltaic performance. A clear understanding of how the structural parameters af...

The MEDUSA camera system is a high resolution earth observation instrument designed to operate from a long endurance UAV flying at stratospheric altitudes. Due to the technical constraints imposed on the instrument regarding mass, power and dimensions, the MEDUSA instrument shall experience large temperature variations induced by its varying environment in which it is operated. The induced phys...

The research in new organic π-conjugated molecules with specific properties has become one of the most interesting topics in fields of materials chemistry. These materials are promising for optoelectronic device technology such as solar cells. On the other hand, the use of low band gap materials is a viable method for better harvesting of the solar spectrum and increasing its efficiency. The Co...

An optimal design of a simple beam-shaped flexure hinge mount supporting an optical mirror is presented. assembly opto-mechanically coupled system as the and mechanical behaviors interact. This side-supporting flexible in radial direction rigid for remaining degrees freedom to support without transferring thermal load. Through thermo-elastic, eigenvalue analysis, opto-mechanical performance was...

Geometric programming is efficient tool for solving a variety of nonlinear optimizationproblems. Geometric programming is generalized for solving engineering design. However,Now Geometric programming is powerful tool for optimization problems where decisionvariables have exponential form.The geometric programming method has been applied with known parameters. However,the observed values of the ...

Electronic processes at organic:organic interfaces: Insight from modeling and implications for opto-electronic devices Interfacial effects play a key role in the electronic and optical processes taking place in opto-electronic devices. Here, we review recent modeling works dealing with the study of the local geometric and electronic structures at organic:organic interfaces and how such interfac...

generally, an engineering design problem has multiple objective functions. some of these problems can be formulated as multiobjective geometric programming models. on the other hand,often in the real world, coefficients of the objective functions are not known precisely. coefficients may be interpreted as fuzzy numbers, which lead to a multiobjective geometric programming with fuzzy parameters....