Nanosystems Initiative Munich

About: Nanosystems Initiative Munich is a facility organization based out in Munich, Germany. It is known for research contribution in the topics: Quantum dot & Perovskite (structure). The organization has 323 authors who have published 549 publications receiving 24316 citations.

Semiconductor nanowires studied by photocurrent spectroscopy

Abstract: Photocurrent spectroscopy is a versatile technique to identify and understand the optoelectronic dynamics occurring in semiconductor nanowires. Conventional photocurrent spectroscopy allows to explore the morphology and material properties of nanowires as well as their contact interfaces. Using time-resolved photocurrent spectroscopy one gets additional information on the multiple photocurrent generation mechanisms and their respective timescales. This chapter discusses various aspects of the photocurrent spectroscopy and it summarizes the physical mechanisms behind the photocurrent and photoconductance effects in semiconductor nanowires.

Coexistence of absolute negative mobility and anomalous diffusion

Abstract: Using extensive numerical studies we demonstrate that absolute negative mobility of a Brownian particle (i.e. the net motion into the direction opposite to a constant biasing force acting around zero bias) does coexist with anomalous diffusion. The latter is characterized in terms of a nonlinear scaling with time of the mean-square deviation of the particle position. Such anomalous diffusion covers "coherent" motion (i.e. the position dynamics x(t) approaches in evolving time a constant dispersion), ballistic diffusion, subdiffusion, superdiffusion and hyperdiffusion. In providing evidence for this coexistence we consider a paradigmatic model of an inertial Brownian particle moving in a one-dimensional symmetric periodic potential being driven by both an unbiased time-periodic force and a constant bias. This very setup allows for various sorts of different physical realizations.

Multifunctional Oligoaminoamides for the Receptor-Specific Delivery of Therapeutic RNA

Abstract: Drugs with novel and versatile modes of action, such as therapeutic nucleic acids or proteins, open new possibilities for the precise therapy of different diseases. The most crucial limitation during the development of a therapeutic drug remains the safe and efficient intracellular delivery.To overcome the hurdles and to realize the successful delivery of such new biopharmaceuticals, our laboratory has recently developed a sequence-defined, cationic oligomer platform based on solid-phase synthesis. These multifunctional oligomers have displayed efficient delivery of therapeutic RNA in vitro and in vivo. In this chapter, we provide a brief background on the special features and applications of these carrier systems as well as detailed protocols for the oligomer and polyplex synthesis and their evaluation.