Now showing items 21-40 of 33002

    • 100-nm tunable femtosecond Cr:LiSAF laser mode locked with a broadband saturable Bragg reflector 

      Demirbas, Umit; Wang, Jing; Petrich, Gale S; Nabanja, Sheila P.; Birge, Jonathan R.; e.a. (Optical Society of America, 2017-04)
      We report broad tunability of a femtosecond (fs) diode-pumped Cr:LiSAF laser mode-locked with a broadband saturable Bragg reflector (SBR). The SBR had seven pairs of Al[subscript x]O[subscript y]I(n∼1.5) and Al[subscript ...
    • 100-W Q-switched Cryogenically Cooled Yb:YAG Laser 

      Hybl, John D.; Fan, Tso Yee; Ochoa, Juan R.; Ripin, Daniel J.; Rand, Darren A.; e.a. (Institute of Electrical and Electronics Engineers, 2009-12)
      This work describes a cryogenic, electro-optically Q-switched Yb:YAG laser that generates 114-W average TEM[subscript 00] power with 47% optical-to-optical efficiency. Pulse repetition frequency is 5 kHz, pulse duration ...
    • A +10dBm 2.4GHz Transmitter with sub-400pW Leakage and 43.7% System Efficiency 

      Paidimarri, Arun; Ickes, Nathan J.; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2015-02)
      Extreme energy constraints inherent in many exciting new wireless sensing applications (such as [1-3]) virtually dictate that such systems operate with extremely low duty cycles, harvesting and storing energy over long ...
    • A 10Gb/s compact low-power serial I/O with DFE-IIR equalization in 65nm CMOS 

      Kim, Byungsub; Dickson, Timothy O.; Liu, Yong; Bulzacchelli, John F.; Friedman, Daniel J. (Institute of Electrical and Electronics Engineers, 2009-05)
      The design of compact low-power I/O transceivers continues to be a challenge for both chip-to-chip and backplane applications. The introduction of dense fine-pitch silicon packaging technologies, that in principle are ...
    • 10 nm gap bowtie plasmonic apertures fabricated by modified lift-off process 

      Huang, I-Chun; Holzgrafe, Jeffrey; Choy, Jennifer T.; Lončar, Marko; Jensen, Russell Andrew; e.a. (American Institute of Physics (AIP), 2016-09)
      Bowtie plasmonic apertures, with gap sizes down to 11 nm and silver film thickness of up to 150 nm (aspect ratio 14:1), were fabricated on a silicon nitride membrane. Transmission spectra feature the aperture resonances ...
    • A 110μW 10Mb/s eTextiles Transceiver for Body Area Networks with Remote Batter Power 

      Mercier, Patrick Philip; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers (IEEE), 2010-02)
      A transceiver for communicating over an electronic textiles medium is implemented for body area networks. A supply-rail-coupled differential signaling scheme permits time-sharing of the eTextiles medium between communication ...
    • A 110μW 10Mb/s eTextiles transceiver for body area networks with remote battery power 

      Mercier, Patrick Philip; Chandrakasan, Anantha P. (Institute of Electrical and Electronics Engineers, 2010-02)
      A transceiver for communicating over an electronic textiles medium is implemented for body area networks. A supply-rail-coupled differential signaling scheme permits time-sharing of the eTextiles medium between communication ...
    • A 120nW 18.5kHz RC oscillator with comparator offset cancellation for ±0.25% temperature stability 

      Paidimarri, Arun; Griffith, Danielle; Wang, Alice; Chandrakasan, Anantha P.; Burra, Gangadhar (Institute of Electrical and Electronics Engineers (IEEE), 2013-02)
      Integrated low-frequency oscillators can replace crystal oscillators as sleep-mode timers to reduce the size and cost of wireless sensors [1]. Since the timer is one of the few continuously functioning circuits, minimizing ...
    • A 12b 250 MS/s Pipelined ADC With Virtual Ground Reference Buffers 

      Boo, Hyun Ho; Boning, Duane S.; Lee, Hae-Seung (Institute of Electrical and Electronics Engineers (IEEE), 2015-12)
      The virtual ground reference buffer (VGRB) technique is introduced as a means to improve the performance of switched-capacitor circuits. The technique enhances the performance by improving the feedback factor of the op-amp ...
    • A 12b 50MS/s 2.1mW SAR ADC with redundancy and digital background calibration 

      Chang, Albert H.; Lee, Hae-Seung; Boning, Duane S. (Institute of Electrical and Electronics Engineers (IEEE), 2013-09)
      A 12-bit 50MS/s SAR ADC implemented in 65nm CMOS technology is presented. The design employs redundancy to relax the DAC settling requirement and to provide sufficient room for errors such that the static nonlinearity ...
    • A 12b 50MS/s fully differential zero-crossing-based ADC without CMFB 

      Lee, Hae-Seung; Brooks, Lane (Institute of Electrical and Electronics Engineers, 2009-05)
      As intrinsic device gain and power supply voltages decrease with CMOS technology scaling, it is becoming increasingly challenging for designers of conventional opamp-based switched-capacitor circuits to meet gain and output ...
    • A 12b, 50 MS/s, Fully Differential Zero-Crossing Based Pipelined ADC 

      Brooks, Lane; Lee, Hae-Seung (Institute of Electrical and Electronics Engineers, 2009-12)
      Zero-crossing based switch capacitor circuits have been introduced as alternatives to op-amp based circuits for eased design considerations and improved power efficiency. This work further improves the resolution, power ...
    • 130-W picosecond green laser based on a frequency-doubled hybrid cryogenic Yb:YAG amplifier 

      Hong, Kyung-Han; Lai, Chien-Jen; Siddiqui, Aleem M.; Kaertner, Franz X. (Optical Society of America, 2009-09)
      130-W average-power picosecond green laser pulses at 514.5 nm are generated from a frequency-doubled hybrid cryogenic Yb:YAG laser. A second-harmonic conversion efficiency of 54% is achieved with a 15-mm-long noncritically ...
    • 137 and 165 GHZ radiometer measurements of hot electrons in LDX 

      Woskov, Paul P.; Kesner, Jay; Garnier, Darren; Mauel, M. E. (Institute of Electrical and Electronics Engineers (IEEE), 2009-08)
      Summary form only given. The levitated dipole experiment (LDX) is investigating a levitated dipole magnetic configuration as an alterative confinement concept for fusion plasmas. A 1.1 MA, 68 cm mean diameter, 560 kg ...
    • 14-3-3 fusion oncogenes in high-grade endometrial stromal sarcoma 

      Lee, Cheng-Han; Ou, Wen-Bin; Marino-Enriquez, Adrian; Zhu, Meijun; Mayeda, Mark; e.a. (National Academy of Sciences, 2012-01)
      14-3-3 proteins are ubiquitously expressed regulators of various cellular functions, including proliferation, metabolism, and differentiation, and altered 14-3-3 expression is associated with development and progression ...
    • 14-3-3 proteins as signaling integration points for cell cycle control and apoptosis 

      Gardino, Alexandra K.; Yaffe, Michael B. (Elsevier, 2011-09)
      14-3-3 proteins play critical roles in the regulation of cell fate through phospho-dependent binding to a large number of intracellular proteins that are targeted by various classes of protein kinases. 14-3-3 proteins play ...
    • 14-3-3 Proteins, FHA Domains and BRCT Domains in the DNA Damage Response 

      Mohammad, Duaa H.; Yaffe, Michael B. (Elsevier, 2009-05)
      The DNA damage response depends on the concerted activity of protein serine/threonine kinases and modular phosphoserine/threonine-binding domains to relay the damage signal and recruit repair proteins. The PIKK family of ...
    • A 140 GHz pulsed EPR/212 MHz NMR spectrometer for DNP studies 

      Smith, Albert A.; Bryant, Jeffrey A.; DeRocher, Ronald; Woskov, Paul P.; Temkin, Richard J.; e.a. (Elsevier, 2012-07)
      We described a versatile spectrometer designed for the study of dynamic nuclear polarization (DNP) at low temperatures and high fields. The instrument functions both as an NMR spectrometer operating at 212 MHz ([superscript ...
    • 15.7% Efficient 10-μm-Thick Crystalline Silicon Solar Cells Using Periodic Nanostructures 

      Branham, Matthew Sanders; Hsu, Wei-Chun; Yerci, Selcuk; Boriskina, Svetlana V.; Hoard, Brittany R.; e.a. (Wiley Blackwell, 2015-02)
      Only ten micrometer thick crystalline silicon solar cells deliver a short-circuit current of 34.5 mA cm[superscript −2] and power conversion efficiency of 15.7%. The record performance for a crystalline silicon solar cell ...
    • 16-Month-Olds Rationally Infer Causes of Failed Actions 

      Gweon, Hyowon; Schulz, Laura E. (American Association for the Advancement of Science (AAAS), 2011-06)
      Sixteen-month-old infants (N = 83) rationally used sparse data about the distribution of outcomes among agents and objects to solve a fundamental inference problem: deciding whether event outcomes are due to themselves or ...