نتایج جستجو برای: solid state device structure

تعداد نتایج: 2932657  

Journal: :Biophysical journal 2010
Astrid C Sivertsen Marvin J Bayro Marina Belenky Robert G Griffin Judith Herzfeld

Gas vesicles are gas-filled buoyancy organelles with walls that consist almost exclusively of gas vesicle protein A (GvpA). Intact, collapsed gas vesicles from the cyanobacterium Anabaena flos-aquae were studied by solid-state NMR spectroscopy, and most of the GvpA sequence was assigned. Chemical shift analysis indicates a coil-α-β-β-α-coil peptide backbone, consistent with secondary-structure-...

2015
Paul Hodgkinson

Recent applications of solid-state NMR to the characterisation of nucleic acid systems are reviewed. Developments in NMR methodology and DFT-based first-principles calculations have led to the emergence of “NMR crystallography”, where solid-state NMR provides information on local structure and dynamics that complements information on periodic ordering and overall structure provided by tradition...

2015
Chaowei Shi Pascal Fricke Lin Lin Veniamin Chevelkov Melanie Wegstroth Karin Giller Stefan Becker Martin Thanbichler Adam Lange

Bactofilins are a recently discovered class of cytoskeletal proteins of which no atomic-resolution structure has been reported thus far. The bacterial cytoskeleton plays an essential role in a wide range of processes, including morphogenesis, cell division, and motility. Among the cytoskeletal proteins, the bactofilins are bacteria-specific and do not have a eukaryotic counterpart. The bactofil...

Lanthanum (La) doped Ceria (CeO2) has attracted considerable interest as a candidate material for thermal barrier coating (TBC) because of its low thermal conductivity and potential capability to be operated above 1250°C. In this study, La2Ce2O7 powder was synthesized through the ball mill method. The crystal structure of La3+ su...

2016

Description: The development of nitride-based light-emitting diodes (LEDs) has led to advancements in high-brightness LED technology for solid-state lighting, handheld electronics, and advanced bioengineering applications. Nitride Semiconductor Light-Emitting Diodes (LEDs) reviews the fabrication, performance, and applications of this technology that encompass the state-of-the-art material and ...

Journal: :Optics letters 1995
S Ruan J M Sutherland P M French J R Taylor B H Chai

We report what is to our knowledge the first Kerr-lens mode locking of the visible transitions at 607 and 639 nm in Pr:YLF. Initiation of the self-mode locking took place through the use of liquid saturable absorbers to establish saturation parameters, and it was carried out in optimized all-solid-state laser configurations (but with gas-laser pumping) with thin s,100-mmd colloidally colored Cd...

Journal: :Optics letters 2013
Seth D Melgaard Denis V Seletskiy Alberto Di Lieto Mauro Tonelli Mansoor Sheik-Bahae

We report on bulk optical refrigeration of Yb:YLF crystal to a temperature of ~124 K, starting from the ambient. This is achieved by pumping the E4-E5 Stark multiplet transition at ~1020 nm. A lower temperature of 119±1 K (~-154C) with available cooling power of 18 mW is attained when the temperature of the surrounding crystal is reduced to 210 K. This result is within only a few degrees of the...

Journal: :Optics letters 2005
X Steve Yao Lianshan Yan Yongqiang Shi

We report an all solid-state polarization-state generator that uses magneto-optic polarization rotators. The device can generate either five or six distinctive polarization states uniformly across a Poincaré sphere with repeatability better than 0.1 degrees. It is ideal for polarization analysis, swept-wavelength measurement, and monitoring of polarization-related parameters and signal-to-noise...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه علم و صنعت ایران - دانشکده مهندسی برق 1383

با توجه به افزایش روز افزون موارد استفاده از تجهیزات اپتوالکترونیک در صنعت، ضرورت کار بر روی چنین سیستم هایی و نیز بهبود قابلیت های آن ها بیش از پیش آشکار می شود. بر این اساس در این پروژه طراحی و ساخت یک سیستم اندازه گیری سرعت دقیق با استفاده از پرتو لیزر مد نظر بوده است. سیستم های متداول در اندازه گیری سرعت عموماً مبتنی برروش زمانی هستند که معمولاً از دقت چندانی برخوردار نیستند و این امر استفاده...

Journal: :Lab on a chip 2012
Erica Eunjung Jung David Erickson

Optofluidics offers a number of potentially transformative advantages for photonic systems. At present however there are a number of technological roadblocks that prevent the practical integration of liquid-state elements into traditional high-speed solid-state photonic systems. Two of the most important of these are the need for continuous resupply of liquids and the difficulty in shuttling li...

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