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Hydrated electrons are important in radiation chemistry and charge-transfer reactions, with applications that include chemical damage of DNA, catalysis, and signaling. Conventionally, hydrated electrons are produced by pulsed radiolysis, sonolysis, two-ultraviolet-photon laser excitation of liquid water, or photodetachment of suitable elect
We report the development of nanowire field-effect transistors featuring an ultrathin parylene film as a polymer gate insulator. The room temperature, gas-phase deposition of parylene is an attractive alternative to oxide insulators prepared at high temperatures using atomic layer deposition. We discuss our custom-built parylene deposition system, which is designed for reliable and controlled depo
Semiconductor nanowire (NW) technology has emerged as a key facilitator of novel optoelectronics e.g. solar cells, photodetectors and LEDs. The functional wavelength range of current NW-based photodetectors is typically limited to the visible/near-infrared region. In this work, we present the first ever reported electrical and optical characteristics of longwavelength IR photodetectors based on la
Controlling the composition of ternary III-V semiconductor nanowires is of high technological importance and the current theoretical understanding is so far limited. We derive a model for the kinetically limited composition of metal-particle-seeded, ternary nanowires. The model is based on the diffusion controlled growth rate of supercritical nuclei. Applying this model to gold-seeded and self-see
We present a simple microfluidic-based synthesis protocol to fabricate snowman like Janus hydrogel particles of poly(N-isopropylacrylamide) (PNIPAM) in micron length scale. Particles are synthesized by emulsifying a hydrogel solution (water (w)/oil (o)) followed by partial solvent evaporation. Solvent evaporation allows the hydrogels to concentrate within the droplet and phase separate into a mono
Absorption refrigerators are autonomous thermal machines that harness the spontaneous flow of heat from a hot bath into the environment in order to perform cooling. Here we discuss quantum realizations of absorption refrigerators in two different settings: namely, cavity and circuit quantum electrodynamics. We first provide a unified description of these machines in terms of the concept of virtual
Human use of natural resources poses a great challenge to social-ecological and socio-technical sys- tems alike: supply risks, pollutant and greenhouse gas emissions, waste generation on the one hand, but also issues of global justice and societal well-being on the other hand. In order to test potential im- pacts of developments and strategies relevant to resource policy, the SimRess project first
A spin–orbit-coupled Bose–Einstein-condensed cloud of atoms confined in an annular trapping potential shows a variety of phases that we investigate in the present study. Starting with the non- interacting problem, the homogeneous phase that is present in an untrapped system is replaced by a sinusoidal density variation in the limit of a very narrow annulus. In the case of an untrapped system there
Electron holographic tomography was used to obtain three-dimensional reconstructions of the morphology and electrostatic potential gradient of axial GaInP/InP nanowire tunnel diodes. Crystal growth was carried out in two opposite directions: GaInP–Zn/InP–S and InP–Sn/GaInP–Zn, using Zn as the p-type dopant in the GaInP but with changes to the n-type dopant (S or Sn) in the InP. Secondary electron
STED Nanoscopy of Interfaces and Interactions between Nanostructure Arrays and Living Cells The specific arrangement of membrane lipids and proteins in a living cell at the interface to high-aspect ratio nanostructures (nanowires and nanostraws) is still unknown – as are the dynamic structural adaptations and molecular rearrangements of living cells in the vicinity of such nanostructures. Whether
STED Nanoscopy of Interfaces and Interactions between Nanostructure Arrays and Living Cells The specific arrangement of membrane lipids and proteins in a living cell at the interface to high-aspect ratio nanostructures (nanowires and nanostraws) is still unknown – as are the dynamic structural adaptations and molecular rearrangements of living cells in the vicinity of such nanostructures. Whether
Nanowire geometries are leading contenders for future low-power transistor design. In this study, low-frequency noise is measured and evaluated in highly scaled III-V nanowire metal-oxide-semiconductor field-effect transistors (MOSFETs) and in planar III-V MOSFETs to investigate to what extent the device geometry affects the noise performance. Number fluctuations are identified as the dominant noi
Background: Breakthroughs in the treatment of preterm birth approximately 40 years ago have enabled a generation of preterm survivors to now reach mid-adulthood. Understanding their health sequelae is essential for guiding their long-term care. We did a study to examine preterm birth in relation to mortality into mid-adulthood. Methods: A national cohort study was done of all 4 296 814 singleton l
One of the primary objectives in forensic psychiatry, distinguishing it from other psychiatric disciplines, is risk management. Assessments of the risk of criminal recidivism are performed on a routine basis, as a baseline for risk management for populations involved in the criminal justice system. However, the risk assessment tools available to clinical practice are limited in their ability to pr
Background: Neighborhood environments have been regularly associated with the weight status. Although the evidence is mostly limited to adults residing in western urban settings, the weight status of older adults living in rural areas is also assumed to be significantly affected by their neighborhood environments. This study aimed to identify environmental attributes specific to rural areas that c
SPINK1+/ETS- prostate cancer is an aggressive disease with poor clinical outcome. New data suggest a novel treatment by upregulating the expression of miR-338-5p/-421 through epigenetic modulation or by miRNA replacement. This is a new and interesting concept that warrants further exploration in clinical trials.See related article by Bhatia et al., p. 2755.
Despite the great advances in synthesis of III-V ternary nanowires over the past decade, there is a lack of understanding and detailed information about Al 1-x In x
Objective To investigate the relation between preterm birth (gestational age <37 weeks) and risk of CKD from childhood into mid-adulthood. Design National cohort study. Setting Sweden. Participants 4 186 615 singleton live births in Sweden during 1973-2014. Exposures Gestational age at birth, identified from nationwide birth records in the Swedish birth registry. Main outcome measures CKD, identif
