Browsing FAS Scholarly Articles by Title
Now showing items 7087-7106 of 18292
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High-Q transverse-electric/transverse-magnetic photonic crystal nanobeam cavities
(AIP Publishing, 2011)We experimentally demonstrate high quality factor dual-polarized photonic crystal nanobeam cavities. The free-standing nanobeams are fabricated in a 500 nm thick silicon layer, and are probed using both tapered optical ... -
High-Q, low index-contrast polymeric photonic crystal nanobeam cavities
(Optical Society of America, 2011)We present the design, fabrication and characterization of high-Q (Q=36,000) polymeric photonic crystal nanobeam cavities made of two polymers that have an ultra-low index contrast (ratio=1.15) and observed thermo-optical ... -
High-Q/V air-mode photonic crystal cavities at microwave frequencies
(Optical Society of America, 2011)We present results for a photonic microwave resonator designed and fabricated at 17.4GHz with a record high Quality factor (Q = 26,400) at room temperature over a mode volume smaller than one cubic wavelength. The cavity ... -
High-Resolution Analysis of Parent-of-Origin Allelic Expression in the Mouse Brain
(American Association for the Advancement of Science (AAAS), 2010)Genomic imprinting results in preferential expression of the paternal or maternal allele of certain genes. We have performed a genome-wide characterization of imprinting in the mouse embryonic and adult brain. This approach ... -
High-resolution definition of the Vibrio cholerae essential gene set with hidden Markov model–based analyses of transposon-insertion sequencing data
(Oxford University Press, 2013)The coupling of high-density transposon mutagenesis to high-throughput DNA sequencing (transposon-insertion sequencing) enables simultaneous and genome-wide assessment of the contributions of individual loci to bacterial ... -
High-Resolution Lineage Tracking Reveals Travelling Wave of Adaptation in Laboratory Yeast
(Springer Science and Business Media LLC, 2019-11)In rapidly adapting asexual populations, including many microbial pathogens and viruses, numerous mutant lineages often compete simultaneously for dominance within the population. These complex evolutionary dynamics determine ... -
High-resolution Linear Polarimetric Imaging for the Event Horizon Telescope
(American Astronomical Society, 2016)Images of the linear polarizations of synchrotron radiation around active galactic nuclei (AGNs) highlight their projected magnetic field lines and provide key data for understanding the physics of accretion and outflow ... -
High-Resolution Magnetic Resonance Spectroscopy Using a Solid-State Spin Sensor
(Springer Nature, 2018-03)Quantum systems that consist of solid-state electronic spins can be sensitive detectors of nuclear magnetic resonance (NMR) signals, particularly from very small samples. For example, nitrogen–vacancy centres in diamond ... -
High-resolution microbial community reconstruction by integrating short reads from multiple 16S rRNA regions
(Oxford University Press, 2013)The emergence of massively parallel sequencing technology has revolutionized microbial profiling, allowing the unprecedented comparison of microbial diversity across time and space in a wide range of host-associated and ... -
High-Resolution Mutation Mapping Reveals Parallel Experimental Evolution in Yeast
(Public Library of Science, 2006)Understanding the genetic basis of evolutionary adaptation is limited by our ability to efficiently identify the genomic locations of adaptive mutations. Here we describe a method that can quickly and precisely map the ... -
High-resolution optical coherence tomography in vivo using a nano-optic endoscope
(2018)This work establishes a new class of endoscopic optical imaging catheters, termed nano-optic endoscopes, that uses metalenses with the ability to modify the phase of incident light at sub-wavelength level. We utilize the ... -
High-resolution protein folding with a transferable potential
(National Academy of Sciences, 2005)A generalized computational method for folding proteins with a fully transferable potential and geometrically realistic all-atom model is presented and tested on seven helix bundle proteins. The protocol, which includes ... -
High-Resolution Spectroscopy of the Transiting Planet Host Star TrES-1
(American Astronomical Society, 2004)We report on a spectroscopic determination of the stellar parameters and chemical abundances for the parent star of the transiting planet TrES-1. Based on a detailed analysis of iron lines in our Keck and Hobby-Eberly ... -
High-Resolution, High-Aspect Ratio Conductive Wires Embedded in Plastic Substrates
(American Chemical Society (ACS), 2015)A novel method is presented to fabricate high-resolution, high-aspect ratio metal wires embedded in a plastic substrate for flexible electronics applications. In a sequential process, high-resolution channels connected to ... -
High-Responsivity Mid-Infrared Graphene Detectors with Antenna-Enhanced Photocarrier Generation and Collection
(American Chemical Society, 2014)Graphene is an attractive photoconductive material for optical detection due to its broad absorption spectrum and ultrashort response time. However, it remains a great challenge to achieve high responsivity in graphene ... -
High-Sensitivity Measurement of Density by Magnetic Levitation
(American Chemical Society (ACS), 2016)This paper presents methods that use Magnetic Levitation (MagLev) to measure very small differences in density of solid diamagnetic objects suspended in a paramagnetic medium. Previous work in this field has shown that, ... -
High-speed Developments in Avian Genomics
(American Institute of Biological Sciences, 2008)Until recently, definitions of avian genome structure and function were based solely on our knowledge of the chicken genome. The expansion of genomic studies to include nonmodel avian species allows us not only to refine ... -
High-speed surface reconstruction of a flying bird using structured light
(The Company of Biologists, 2017)Birds fly effectively and maneuver nimbly by dynamically changing the shape of their wings during each wingbeat. These shape changes have yet to be quantified automatically at high temporal and spatial resolution. Therefore, ... -
High-Speed, Compact, Adaptive Lenses Using In-Line Transparent Dielectric Elastomer Actuator Membranes
(Society of Photo-Optical Instrumentation Engineers (SPIE), 2013)Electrically tunable adaptive lenses provide several advantages over traditional lens assemblies in terms of compactness, speed, efficiency, and flexibility. We present an elastomer-liquid lens system which makes use of ... -
High-Temperature Operation of Terahertz Quantum Cascade Laser Sources
(Institute of Electrical and Electronics Engineers, 2009)Terahertz (THz) quantum cascade lasers (QCLs) are currently the most advanced electrically pumped semiconductor lasers in the spectral range 1-5 THz. However, their operation at room temperature is still an unresolved ...