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The constant beat: cardiomyocytes adapt their forces by equal contraction upon environmental stiffening
(2013)Biology OpenCardiomyocytes are responsible for the permanent blood flow by coordinated heart contractions. This vital function is accomplished over a long period of time with almost the same performance, although heart properties, as its elasticity, change drastically upon aging or as a result of diseases like myocardial infarction. In this paper we have analyzed late rat embryonic heart muscle cells' morphology, sarcomere/costamere formation and ...Journal Article -
Intake Manifold Boosting of Turbocharged Spark-Ignited Engines
(2013)EnergiesDownsizing and turbocharging is a widely used approach to reduce the fuel consumption of spark ignited engines while retaining the maximum power output. However, a substantial loss in drivability must be expected due to the occurrence of the so-called turbo lag. The turbo lag results from the additional inertia that the turbocharger adds to the system. Supplying air by an additional valve, the boost valve, to the intake manifold can be ...Journal Article -
Quantifying the effects of social influence
(2013)Scientific ReportsHow do humans respond to indirect social influence when making decisions? We analysed an experiment where subjects had to guess the answer to factual questions, having only aggregated information about the answers of others. While the response of humans to aggregated information is a widely observed phenomenon, it has not been investigated quantitatively, in a controlled setting. We found that the adjustment of individual guesses depends ...Journal Article -
Tunable charge detectors for semiconductor quantum circuits
(2013)New Journal of PhysicsNanostructures defined in high-mobility two-dimensional electron systems offer a unique way of controlling the microscopic details of the investigated device. Quantum point contacts play a key role in these investigations, since they are not only a research topic themselves, but also turn out to serve as convenient and powerful detectors for their electrostatic environment. We investigate how the sensitivity of charge detectors can be ...Journal Article -
Fusion of Building Information and Range Imaging for Autonomous Location Estimation in Indoor Environments
(2013)SensorsWe present a novel approach for autonomous location estimation and navigation in indoor environments using range images and prior scene knowledge from a GIS database (CityGML). What makes this task challenging is the arbitrary relative spatial relation between GIS and Time-of-Flight (ToF) range camera further complicated by a markerless configuration. We propose to estimate the camera’s pose solely based on matching of GIS objects and ...Journal Article -
Light-Intensity-Induced Characterization of Elastic Constants and d33 Piezoelectric Coefficient of PLZT Single Fiber Based Transducers
(2013)SensorsEnhanced functionality of electro-optic devices by implementing piezoelectric micro fibers into their construction is proposed. Lanthanum-modified lead zirconate titanate (PLZT) ceramics are known to exhibit high light transparency, desirable electro-optic properties and fast response. In this study PLZT fibers with a diameter of around 300 microns were produced by a thermoplastic processing method and their light-induced impedance and ...Journal Article -
Quantum control of the motional states of trapped ions through fast switching of trapping potentials
(2013)New Journal of PhysicsWe propose a new scheme for supplying voltages to the electrodes of microfabricated ion traps, enabling access to a regime in which changes to the trapping potential are made on timescales much shorter than the period of the secular oscillation frequencies of the trapped ions. This opens up possibilities for speeding up the transport of ions in segmented ion traps and also provides access to control of multiple ions in a string faster ...Journal Article -
Cyclic depopulation of edge states in a large quantum dot
(2013)New Journal of PhysicsWe investigate the magneto-transport through a 1.6 μm wide quantum dot (QD) with an adjacent charge detector, for different integer filling factors in the QD and constrictions. When this system is operated at a high transmission, it acts as a Fabry–Pérot interferometer, where transport is governed by a Coulomb blockade mechanism. For lower transmissions where the barriers are in the tunneling regime, we can directly measure the charge ...Journal Article -
Holonomic quantum computing in symmetry-protected ground states of spin chains
(2013)New Journal of PhysicsWhile solid-state devices offer naturally reliable hardware for modern classical computers, thus far quantum information processors resemble vacuum tube computers in being neither reliable nor scalable. Strongly correlated many body states stabilized in topologically ordered matter offer the possibility of naturally fault tolerant computing, but are both challenging to engineer and coherently control and cannot be easily adapted to different ...Journal Article -
Evolution and functional cross-talk of protein post-translational modifications
(2013)Molecular Systems BiologyProtein post-translational modifications (PTMs) allow the cell to regulate protein activity and play a crucial role in the response to changes in external conditions or internal states. Advances in mass spectrometry now enable proteome wide characterization of PTMs and have revealed a broad functional role for a range of different types of modifications. Here we review advances in the study of the evolution and function of PTMs that were ...Journal Article