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Nanofabricated Devices Based on Molecular Motors: Biosensing, Computation and Detection

The thesis describes the use of molecular motors in nanofabricated devices designed for potential applications in biosensing, computation and detection. We utilize the well-established guiding principles for controlling the motion of actin filaments propelled by myosin molecular motors, and build upon these developments in order to improve upon previously demonstrated techniques, and establish new

Optical Imaging for Nanowire Mechanics

In this work, we present a stroboscopic detection technique for the study of oscillating nanoscale objects. This optical read-out gives a position accuracy better than 1 nm which is a fraction of both the diffraction limit and the pixel size. The advantage of this stroboscopic method compared to conventional time-averaging techniques, is the time-resolution it provides as well as being non-invasiv

Quantum Transport in Heterostructure Nanowire Devices

This thesis investigates electronic transport in several types of novel heterostructure nanowires. The first part of the thesis focuses on band-to-band mechanisms in heterostructure nanowires for low-power electronics. First, tunnel field-effect transistors (TFETs) based on InP/GaAs heterostructure nanowires with n-i-p doping profile are explored. To further enhance the interband tunneling current

Nanoparticles: Characterization and exposure metrics

Exposure to aerosol nanoparticles has always been present in the evolution of humans, and thus has the human body developed ways of dealing with particles that enters the body. However with the emerging nanotech industry, new types of nanoparticles are being produced and used. Many of these particles have properties never seen before and this rise concern about how exposure to them might cause unw

Specific blood pressure targets for patients with diabetic nephropathy?

Diabetic nephropathy represents a condition frequently detected in current clinical practice characterized by a very high cardiovascular risk profile. Blood pressure reduction via antihypertension drug treatment represents a therapeutic approach capable of exerting favorable effects on renal and cardiovascular outcomes. The purpose of this article is to review the current literature and results of

Length Distributions of Nanowires Growing by Surface Diffusion

We present experimental data on the time and radius-dependent length distributions of Au-catalyzed InAs nanowires grown by metal organic vapor phase epitaxy. We show that these distributions are not as sharp as commonly believed. Rather, they appear to be much broader than Poissonian from the very beginning and spread quickly as the nanowires grow. We develop a model that attributes the observed b

Labor market consequences of childhood onset type 1 diabetes

This paper examines the effect of the onset of Type 1 Diabetes Mellitus (T1DM) before 15 years of age on labor market outcomes and contributes to the literature on effects of childhood health on adult socioeconomic status. Using national Swedish socioeconomic register data 1991–2010 for 2485 individuals born 1972–1978 with onset of T1DM in 1977–1993, we find that T1DM in childhood has a negative e

Quaternary Chemical Potentials for Gold-Catalyzed Growth of Ternary InGaAs Nanowires

Chemical potentials of quaternary liquid alloys are required for theoretical description of the composition and crystal structure of Au-catalyzed ternary III-V nanowires. However, such data are solely missing in the literature. Herein, we use a thermodynamic database for the quaternary Au-In-Ga-As system that has been developed using the CALPHAD (CALculation of PHAse Diagram) method. We present th

Multiple myeloma risk variant at 7p15.3 creates an IRF4-binding site and interferes with CDCA7L expression

Genome-wide association studies have identified several risk loci for multiple myeloma (MM); however, the mechanisms by which they influence MM are unknown. Here by using genetic association data and functional characterization, we demonstrate that rs4487645 G>T, the most highly associated variant (P = 5.30 × 10-25), resides in an enhancer element 47 kb upstream of the transcription start site of

Estimating the harms and benefits of prostate cancer screening as used in common practice versus recommended good practice : A microsimulation screening analysis

BACKGROUND: Prostate-specific antigen (PSA) screening and concomitant treatment can be implemented in several ways. The authors investigated how the net benefit of PSA screening varies between common practice versus “good practice.”. METHODS: Microsimulation screening analysis (MISCAN) was used to evaluate the effect on quality-adjusted life-years (QALYs) if 4 recommendations were followed: limite

Dense, Regular GaAs Nanowire Arrays by Catalyst-Free Vapor Phase Epitaxy for Light Harvesting

Density dependent growth and optical properties of periodic arrays of GaAs nanowires (NWs) by fast selective area growth MOVPE are investigated. As the period of the arrays is decreased from 500 nm down to 100 nm, a volume growth enhancement by a factor of up to four compared with the growth of a planar layer is observed. This increase is explained as resulting from increased collection of precurs

Systemic lupus erythematosus : Still a challenge for physicians

Systemic lupus erythematosus (SLE) has a complex clinical picture, and a number of defects in the immune system have been described in patients with the disease. Most organs can be involved in SLE, and in addition to the typical major organ manifestations (e.g. from kidneys and the central nervous system), early cardiovascular disease is a major determinant of prognosis. Several important findings

Risk of future microvascular and macrovascular disease in people with Type 1 diabetes of very long duration : A national study with 10-year follow-up

Aims: To describe factors associated with prevalence or absence of microvascular and macrovascular complications in people with Type 1 diabetes of very long duration and to investigate the risk factors associated with the incidence of such complications. Methods: We included individuals with Type 1 diabetes who had been entered in the Swedish National Diabetes Register between 2002 and 2004 (n = 1

Early vascular ageing as a new model to understand hypertension and arterial disease

Hypertension is a major cardiovascular risk factor and can be treated. The cardiovascular risk associated with hypertension, however, cannot be fully reversed by treatment with blood pressure-lowering drugs. One reason could be that not all risk factors are addressed at the same time, but another reason could well be that structural changes and remodelling of the arterial wall are not diminished n