III-V semiconductor nanowires behave as optical antennae because of their shape anisotropy and high refractive index. The antennae like behavior modifies the absorption and emission properties of nanowires compared to planar materials. Nanowires absorb light more efficiently compared to an equivalent volume planar material, leading to higher short circuit current densities. The modified emissio...

Non-planar transistor channels used in tri-gate [1] or gateall-around (GAA) [2] device architectures offer superior electrostatic control, which reduces short-channel effects. The limiting factor in these devices is surface-roughness scattering (SRS) as it is more pronounced in these devices than in planar technologies, which has two reasons: one is that there are more surfaces to scatter off a...

PURPOSE We aimed to investigate the efficacy of diffusion tensor imaging in the diagnosis of carpal tunnel syndrome and to obtain a quantitative parameter that may contribute to the diagnosis. MATERIALS AND METHODS The median nerves in 57 wrists of 38 patients diagnosed as carpal tunnel syndrome and 30 wrists of 24 normal subjects were prospectively evaluated with a 3T Philips scanner, using ...

PURPOSE To develop an efficient acquisition for high-resolution diffusion imaging and allow in vivo whole-brain acquisitions at 600- to 700-μm isotropic resolution. METHODS We combine blipped-controlled aliasing in parallel imaging simultaneous multislice (SMS) with a novel slab radiofrequency (RF) encoding gSlider (generalized slice-dithered enhanced resolution) to form a signal-to-noise rat...

PURPOSE To: 1) Present fornix tractography in its entirety for 20 healthy individuals to assess variability. 2) Provide individual and groupwise whole tract diffusion parameter symmetry assessments prior to clinical application. 3) Compare whole tract diffusion parameter assessments with tract-based spatial statistics (TBSS). MATERIALS AND METHODS Diffusion tensor imaging (DTI) data were acqu...

Introduction Tensor-valued diffusion rate measurements in the nervous system have the potential to elucidate connectivity and other microstructural information1. We present a new method for visualizing 3D volumetric diffusion tensor MRI images. We distinguish between linear anisotropy and planar anisotropy and represent values within the two regimes using streamtubes and streamsurfaces, respect...

OBJECTIVES We used an optimized echo-planar pulse sequence for isotropically weighted diffusion imaging (1) to measure mean diffusivity (D) in lesions and normal-appearing white matter (NAWM) in the entire brain from patients with mildly disabling relapsing-remitting multiple sclerosis (MS), (2) to compare the D of NAWM from patients with that of white matter from normal controls, (3) to evalua...

We evaluated dynamic changes in water diffusion in the brain during the cardiac cycle by using cine diffusion MRI. On a 1.5-T MRI, ECG-triggered single-shot diffusion echo planar imaging was used with sensitivity encoding, halfscan, and rectangular field of view techniques for minimizing bulk motion effects such as brain pulsation, with a data-sampling window of 3 ms. The apparent diffusion coe...