Radiation tolerance of a dual-band IR detector based on a pBp architecture

2012 ◽  
Author(s):  
Vincent M. Cowan ◽  
Christian P. Morath ◽  
Stephen Myers ◽  
Elena Plis ◽  
Sanjay Krishna
Keyword(s):  
Dual Band ◽  
Radiation Tolerance ◽  
Ir Detector

Radiation tolerance characterization of dual band InAs/GaSb type-II strain-layer superlattice pBp detectors using 63 MeV protons

2012 ◽  
Vol 101 (25) ◽  
pp. 251108 ◽  
Author(s):  
V. M. Cowan ◽  
C. P. Morath ◽  
J. E. Hubbs ◽  
S. Myers ◽  
E. Plis ◽  
...  
Keyword(s):  
Dual Band ◽  
Radiation Tolerance ◽  
Type Ii ◽  
Strain Layer ◽  
Strain Layer Superlattice ◽  
Mev Protons

Numerical Study of Dual band (MW/LW) IR Detector for Performance Improvement

2017 ◽  
Vol 67 (2) ◽  
pp. 141 ◽  
Author(s):  
P.K. Saxena
Keyword(s):  
Performance Improvement ◽  
Infrared Detectors ◽  
Technology Development ◽  
Numerical Study ◽  
Experimental Results ◽  
Dual Band ◽  
Ir Detector ◽  
Proposed Model ◽  
Semiconductor Equations ◽  
Bias Condition

In the present study, an extensive numerical analysis has been performed and an effort has been made to understand the underlying physics, which is presently unclear for researchers for development of third generation FPA infrared detectors based on HgCdTe material. To reduce technology development cost associated with dualband photodetector for operation at MWIR and LWIR regions, a 2D theoretical model has been proposed including all the relevant physics. The structure under present study considers back-to-back diode structures to detect simultaneous MW/LW operative wavelength by changing the biasing polarity of the diodes. The optimum electrical and optical outputs from dualband detector have been achieved through performing design of experiments. The coupled basic semiconductor equations including nonlinear continuity, transport and Poisson’s equations have been solved to achieve electrical (I-V) characteristics under no bias condition and modern optics equations has been coupled to semiconductor equations to obtain optical characteristics. The quantum efficiency of both detectors has been computed and compared with experimental results. The computed results obtained on the basis of proposed model accurately matches with the experimental results reported by others researcher. The results exhibit the quantum efficiencies, QEMW=95 per cent and QELW=74.5 per cent, respectively.

scholarly journals Numerical Investigation of an AlN-Based Resonant Detector with a Plasmon Aperture Absorber for Dual-Band IR Sensing

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1264
Author(s):  
Jicong Zhao ◽  
Mingmin Ge ◽  
Shitao Lv ◽  
Haiyan Sun ◽  
Chenguang Song
Keyword(s):  
Response Speed ◽  
Dual Band ◽  
Electrical Performance ◽  
Polarization Angle ◽  
Ir Absorption ◽  
Ir Detector ◽  
Wave Resonator ◽  
Potential Applications ◽  
Resonant Detector ◽  
Ir Detection

An aluminum nitride (AlN) piezoelectric resonant infrared (IR) detector based on a Lame-wave resonator (LWR) and plasmon apertures was designed for dual-band sensing, and was investigated by using the finite element method (FEM) and finite difference time domain (FDTD) simulations. A plasmon structure with the apertures was designed on the surface of the detector in order to maintain electrical performance and to obtain ultrahigh dual-band IR absorption. The electrical performance of the LWR with the plasmon apertures was comparable to that of the LWR with floating electrodes, which was found to be superior to that of the LWRs with plasmon particles or open electrodes. Both of the rectangle aperture and cross-shaped aperture absorbers can achieve ultrahigh dual-band absorptions of up to 97%, and the cross-shaped aperture absorber is insensitive to the polarization angle. Moreover, a detailed optimization analysis for the thermal properties of the detector was conducted to obtain favorable responsivity and response speed. The calculated results demonstrate that the proposed resonant detector has great potential applications in IR detection.

DNA sequence mapping in interphase and metaphase chromosomes by fluorescence in situ hybridization

1992 ◽  
Vol 50 (1) ◽  
pp. 496-497
Author(s):  
Barbara Trask ◽  
Susan Allen ◽  
Anne Bergmann ◽  
Mari Christensen ◽  
Anne Fertitta ◽  
...  
Keyword(s):  
In Situ Hybridization ◽  
Dna Sequence ◽  
Dna Sequences ◽  
Dual Band ◽  
Nick Translation ◽  
Metaphase Chromosomes ◽  
Band Pass ◽  
Texas Red ◽  
Fluorescent Spot

Using fluorescence in situ hybridization (FISH), the positions of DNA sequences can be discretely marked with a fluorescent spot. The efficiency of marking DNA sequences of the size cloned in cosmids is 90-95%, and the fluorescent spots produced after FISH are ≈0.3 μm in diameter. Sites of two sequences can be distinguished using two-color FISH. Different reporter molecules, such as biotin or digoxigenin, are incorporated into DNA sequence probes by nick translation. These reporter molecules are labeled after hybridization with different fluorochromes, e.g., FITC and Texas Red. The development of dual band pass filters (Chromatechnology) allows these fluorochromes to be photographed simultaneously without registration shift.

Dual band hybrid vehicular telephone antenna

2002 ◽  
Vol 149 (1) ◽  
pp. 41-44 ◽  
Author(s):  
L. Economou ◽  
R.J. Langley
Keyword(s):  
Dual Band

Single-peak-regulation and wide-angle dual-band metamaterial absorber based on hollow-cross and solid-cross resonators

2020 ◽  
Vol 91 (3) ◽  
pp. 30901
Author(s):  
Yibo Tang ◽  
Longhui He ◽  
Jianming Xu ◽  
Hailang He ◽  
Yuhan Li ◽  
...  
Keyword(s):  
Transverse Electric ◽  
Surface Current ◽  
Dielectric Substrate ◽  
Transverse Magnetic ◽  
Metamaterial Absorber ◽  
Absorption Peak ◽  
Dual Band ◽  
Single Peak ◽  
Wide Angle ◽  
Surface Current Density

A dual-band microwave metamaterial absorber with single-peak regulation and wide-angle absorption has been proposed and illustrated. The designed metamaterial absorber is consisted of hollow-cross resonators, solid-cross resonators, dielectric substrate and metallic background plane. Strong absorption peak coefficients of 99.92% and 99.55% are achieved at 8.42 and 11.31 GHz, respectively, which is basically consistent with the experimental results. Surface current density and changing material properties are employed to illustrate the absorptive mechanism. More importantly, the proposed dual-band metamaterial absorber has the adjustable property of single absorption peak and could operate well at wide incidence angles for both transverse electric (TE) and transverse magnetic (TM) waves. Research results could provide and enrich instructive guidances for realizing a single-peak-regulation and wide-angle dual-band metamaterial absorber.

Dual-Band Microstrip-Line BPFs Using Tap-Coupling Resonators

2008 ◽  
Vol 128 (6) ◽  
pp. 878-884
Author(s):  
Nobuhiko Okuzaki ◽  
Yukihiro Shimakata ◽  
Mitsuyuki Yamauchi ◽  
Kouji Wada ◽  
Takashi Iwasaki
Keyword(s):  
Microstrip Line ◽  
Dual Band

Design of a Dual-Band Bandpass Filter Using Active Inductor Principle

2017 ◽  
Vol 7 (4) ◽  
pp. 342
Author(s):  
Imane Halkhams ◽  
Said Mazer ◽  
Mahmoud Mehdi ◽  
Moulhime El Bekkali ◽  
Wafae El Hamdani
Keyword(s):  
Bandpass Filter ◽  
Dual Band ◽  
Active Inductor

EBG Based Compact Design of Dual Band UWB MIMO Antenna Operating in Ku/K Band

2020 ◽  
Vol 10 (4) ◽  
pp. 268
Author(s):  
Subuh Pramono ◽  
Muhammad Hamka Ibrahim ◽  
Josaphat Tetuko Sri Sumantyo
Keyword(s):  
Dual Band ◽  
Mimo Antenna ◽  
Compact Design ◽  
K Band
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