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高性能红外集成探测器

应用光学 1991年第2期12卷 36-38,43页

作者： S.d.Gunapala d.d.coon 陆培国

描述了 Si:P 红外集成探测器的性能改进。这种探测器具有 p-i-n 二极管结构,但红外探测方式还包括有在低温下以局部杂质状态存储在 i 区内的电荷的光电发射。在红外照射之后,占有局部态的剩余电荷就场离子化。为了测出剩余电荷,对瞬态... 详细信息

描述了 Si:P 红外集成探测器的性能改进。这种探测器具有 p-i-n 二极管结构,但红外探测方式还包括有在低温下以局部杂质状态存储在 i 区内的电荷的光电发射。在红外照射之后,占有局部态的剩余电荷就场离子化。为了测出剩余电荷,对瞬态场离子电流进行数字化和集成化。增加光敏区 i 的厚度和杂质浓度可提高量子效率。随着杂质浓度的增加,110μm 厚的探测器,在波长27μm左右,其量子效率可从0.5%增加到70%左右,而最大电荷存储时间(红外集成时间)可以从12h以上减少到1s 左右。

关键词：红外探测器 Si:P 模拟集成

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红外瞬态传感器

应用光学 1989年第6期10卷 30-33页

作者： d.d.coon R.P.G.Karunasiri K.M.S.V.Bandara 顾洪武

已完成的实验表明,非本征硅注入型红外探测器可用于模拟生物视觉系统中的瞬态神经响应。神经响应为视觉系统焦平面平行处理提供了一种高通滤波的方法。高通滤波强调图象的瞬时性。适用的红外成象应用包括:观测、运动传感及跟踪。红外探... 详细信息

已完成的实验表明,非本征硅注入型红外探测器可用于模拟生物视觉系统中的瞬态神经响应。神经响应为视觉系统焦平面平行处理提供了一种高通滤波的方法。高通滤波强调图象的瞬时性。适用的红外成象应用包括:观测、运动传感及跟踪。红外探测器的输出脉冲足够大,因此不需要放大。这可以简化焦平面上或焦平面附近的平行处理。利用探测器及铺助电路的模型,对红外瞬态传感器方法进行定量分析。人们发现,模型和实验数据之间符合得很好。

关键词：焦平面瞬态高通滤波生物视觉输出脉冲视觉系统本征硅锁模响应率读出系统

Engineering and characterization of dehalogenase enzymes from delftia acidovorans in bioremediation of perfluorinated compounds

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Synthetic and Systems Biotechnology 2022年第2期7卷 683-688页

作者： Jackson d.Harris Collin M.coon Megan E.doherty Eamon A.McHugh Margaret C.Warner Conley L.Walters Olivia M.Orahood Abigail E.Loesch david C.Hatfield John C.Sitko Erin A.Almand J.Jordan Steel department of Biology United Stated Air Force AcademyColorado SpringsCO80840USA department of Biochemistry United States Air Force AcademyColorado SpringsCO80840USA department of Civil Engineering United States Air Force AcademyColorado SpringsCO80840USA

Per-and Polyfluorinated alkyl substances(PFAS)are a broad class of synthetic compounds that have fluorine substituted for hydrogen in several or all locations and are globally categorized as PFCs(perfluorochemicals;commonly called fluorinated chemicals).These compounds have unique chemical and physical properties that enable their use in non-stick surfaces,fire-fighting efforts,and as slick ***,recent concerns over the health effects of such compounds,specifically perfluorooctanoic acid and perfluorooctane sulfonic acid(PFOA,PFOS;PFOA/S),have led to increased attention and research by the global community into degradation *** this study,soil samples from PFAS-contamination sites were cultured and screened for microbes with PFOA/S degradation potential,which led to the identification of delftia *** was found that *** isolated from PFAS-contaminated soils was capable of growth in minimal media with PFOA as a sole carbon resource,and an observable fluoride concentration increase was observed when cells were exposed to *** suggests potential activity of a dehalogenase enzyme that may be of use in PFOA or PFAS microbial remediation *** associated haloacid dehalogenases have been identified in the *** genome and have been engineered for expression in Escherichia coli for rapid production and *** enzymes have shown potential for enzymatic defluorination,a significant step in biological degradation and removal of PFOA/S from the *** hypothesize that bioremediation of PFAS using naturally occurring microbial degradation pathways may represent a novel approach to remove PFAS contamination.

关键词： iGEM PFAS Bioremediation Bioengineering delftia acidovorans

Advances in endovascular aneurysm management: flow modulation techniques with braided mesh devices

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Stroke & Vascular Neurology 2020年第1期5卷 1-13页

作者： Jessica K Campos Barry Cheaney II Brian V Lien david A Zarrin Chau d Vo Geoffrey P Colby Li-Mei Lin Alexander L coon department of Neurosurgery University of California Irvine School of MedicineOrangeCaliforniaUSA Oregon Health and Science University School of Medicine PortlandOregonUSA Neurosurgery Johns Hopkins UniversityBaltimoreMarylandUSA Johns Hopkins University School of Medicine BaltimoreMarylandUSA UCLA Neurosurgery Ronald Reagan UCLA Medical CenterLos AngelesCaliforniaUSA Carondelet Neurological Institute St.Joseph's HospitalCarondelet Health NetworkTucsonArizonaUnited States

Flow diverters and flow disruption technology,alongside nuanced endovascular techniques,have ushered in a new era of treating cerebral ***,we provide an overview of the latest flow modulation devices and highlight the... 详细信息

关键词： flow braided hered

Search for two-neutrino double-beta decay of^(136)Xe to the 0^(+)_(1)excited state of 136Ba with the complete EXO-200 dataset

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Chinese Physics C 2023年第10期47卷 1-9页

作者： S.Al Kharusi G.Anton I.Badhrees P.S.Barbeau d.Beck V.Belov T.Bhatta M.Breidenbach T.Brunner G.F.Cao W.R.Cen C.Chambers B.Cleveland M.coon A.Craycraft T.daniels L.darroch S.J.daugherty J.davis S.delaquis A.der Mesrobian-Kabakian R.deVoe J.dilling A.dolgolenko M.J.dolinski J.Echevers W.Fairbank Jr. d.Fairbank J.Farine S.Feyzbakhsh P.Fierlinger Y.S.Fu d.Fudenberg P.Gautam R.Gornea G.Gratta C.Hall E.V.Hansen J.Hoessl P.Hufschmidt M.Hughes A.Iverson A.Jamil C.Jessiman M.J.Jewell A.Johnson A.Karelin L.J.Kaufman T.Koffas R.Krücken A.Kuchenkov K.S.Kumar Y.Lan A.Larson B.G.Lenardo d.S.Leonard G.S.Li S.Li Z.Li C.Licciardi Y.H.Lin R.MacLellan T.McElroy T.Michel B.Mong d.C.Moore K.Murray O.Njoya O.Nusair A.Odian I.Ostrovskiy A.Perna A.Piepke A.Pocar F.Retière A.L.Robinson P.C.Rowson J.Runge S.Schmidt d.Sinclair K.Skarpaas A.K.Soma V.Stekhanov M.Tarka S.Thibado J.Todd T.Tolba T.I.Totev R.Tsang B.Veenstra V.Veeraraghavan P.Vogel J.-L.Vuilleumier M.Wagenpfeil J.Watkins M.Weber L.J.Wen U.Wichoski G.Wrede S.X.Wu Q.Xia d.R.Yahne L.Yang Y.-R.Yen O.Ya.Zeldovich T.Ziegler 无 Physics department McGill UniversityMontrealQuebec H3A 2T8Canada Erlangen Centre for Astroparticle Physics(ECAP) Friedrich-Alexander-University Erlangen-NürnbergErlangen 91058Germany Physics department Carleton UniversityOttawaOntario K1S 5B6Canada department of Physics Duke Universityand Triangle Universities Nuclear Laboratory(TUNL)DurhamNorth Carolina 27708USA Physics department University of IllinoisUrbana-ChampaignIllinois 61801USA Institute for Theoretical and Experimental Physics named by A.I.Alikhanov of National Research Centre“Kurchatov Institute” Moscow 117218Russia department of Physics University of South DakotaVermillionSouth Dakota 57069USA SLAC National Accelerator Laboratory Menlo ParkCalifornia 94025USA TRIUMF VancouverBritish Columbia V6T 2A3Canada Institute of High Energy Physics Beijing 100049China department of Physics Laurentian UniversitySudburyOntario P3E 2C6Canada Physics department Colorado State UniversityFort CollinsColorado 80523USA department of Physics and Physical Oceanography University of North Carolina at WilmingtonWilmingtonNC 28403USA Physics department and CEEM Indiana UniversityBloomingtonIndiana 47405USA Physics department Stanford UniversityStanfordCalifornia 94305USA department of Physics Drexel UniversityPhiladelphiaPennsylvania 19104USA Amherst Center for Fundamental Interactions and Physics department University of MassachusettsAmherstMA 01003USA Technische Universität München Physikdepartment and Excellence Cluster UniverseGarching 80805Germany Physics department University of MarylandCollege ParkMaryland 20742USA department of Physics and Astronomy University of AlabamaTuscaloosaAlabama 35487USA Wright Laboratory Department of PhysicsYale UniversityNew HavenConnecticut 06511USA IBS Center for Underground Physics Daejeon 34126Korea department of Physics and Astronomy Stony Brook UniversitySUNYStony BrookNew York 11794USA Kellogg Lab CaltechPasadenaCalifornia 91125USA LHEP Albert Einstein CenterUniversi

A new search for two-neutrino double-beta(2νββ)decay of^(136)Xe to the 0+1 excited state of 136Ba is performed with the full EXO-200 dataset.A deep learning-based convolutional neural network is used to discriminate signal from background *** detection efficiency is increased relative to previous searches by EXO-200 by more than a factor of *** the addition of the Phase II dataset taken with an upgraded detector,the median 90%confidence level half-life sensitivity of 2νββdecay to the 0+1 state of 136Ba is 2.9×10^(24)yr using a total^(136)Xe exposure of 234.1 kg *** statistically significant evidence for 2νββdecay to the 0^(+)_(1)state is observed,leading to a lower limit of T2ν1/2(0^(+)→0^(+)_(1))>1.4×10^(24)yr at 90%confidence level,improved by 70%relative to the current world's best constraint.

关键词： EXO-200 experiment neutrinoless double beta decay excited state

Search for two-neutrino double-beta decay of 136Xe to the 01+excited state of136Ba with the complete EXO-200 dataset

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Chinese Physics C 2023年第10期47卷 5-13页

作者： S.Al Kharusi G.Anton I.Badhrees P.S.Barbeau d.Beck V.Belov T.Bhatta M.Breidenbach T.Brunner G.F.Cao W.R.Cen C.Chambers B.Cleveland M.coon A.Craycraft T.daniels L.darroch S.J.daugherty J.davis S.delaquis A.der Mesrobian-Kabakian R.de Voe J.dilling A.dolgolenko M.J.dolinski J.Echevers W.Fairbank Jr. d.Fairbank J.Farine S.Feyzbakhsh P.Fierlinger Y.S.Fu d.Fudenberg P.Gautam R.Gornea G.Gratta C.Hall E.V.Hansen J.Hoessl P.Hufschmidt M.Hughes A.Iverson A.Jamil C.Jessiman M.J.Jewell A.Johnson A.Karelin L.J.Kaufman T.Koffas R.Krücken A.Kuchenkov K.S.Kumar Y.Lan A.Larson B.G.Lenardo d.S.Leonard G.S.Li S.Li Z.Li C.Licciardi Y.H.Lin R.Mac Lellan T.Mc Elroy T.Michel B.Mong d.C.Moore K.Murray O.Njoya O.Nusair A.Odian I.Ostrovskiy A.Perna A.Piepke A.Pocar F.Retière A.L.Robinson P.C.Rowson J.Runge S.Schmidt d.Sinclair K.Skarpaas A.K.Soma V.Stekhanov M.Tarka S.Thibado J.Todd T.Tolba T.I.Totev R.Tsang B.Veenstra V.Veeraraghavan P.Vogel J.-L.Vuilleumier M.Wagenpfeil J.Watkins M.Weber L.J.Wen U.Wichoski G.Wrede S.X.Wu Q.Xia d.R.Yahne L.Yang Y.-R.Yen O.Ya.Zeldovich T.Ziegler EXO-200 Collaboration Physics department McGill University Erlangen Centre for Astroparticle Physics (ECAP) Friedrich-Alexander-University Erlangen-Nürnberg Physics department Carleton University King Abdulaziz City for Science and Technology department of Physics Duke University and Triangle Universities Nuclear Laboratory (TUNL) Physics department University of Illinois Institute for Theoretical and Experimental Physics named by A.I.Alikhanov of National Research Centre “Kurchatov Institute” a division of National Research Center “Kurchatov Institute” department of Physics University of South Dakota department of Physics and Astronomy University of Kentucky SLAC National Accelerator Laboratory TRIUMF Institute of High Energy Physics Witmem Technology Co. Ltd. department of Physics Laurentian University Also at SNOLAB Physics department Colorado State University department of Physics and Physical Oceanography University of North Carolina at Wilmington Physics department and CEEM Indiana University Carleton University Commissariat àl’Energie Atomique et auxénergies alternatives Physics department Stanford University department of Physics Drexel University University of California Amherst Center for Fundamental Interactions and Physics department University of Massachusetts Technische Universit?t München Physikdepartment and Excellence Cluster Universe Qventus department of Physics University of Virginia Physics department University of Maryland department of Physics at the University of California department of Physics and Astronomy University of Alabama Wright Laboratory Department of Physics Yale University department of Physics Princeton University IBS Center for Underground Physics Physics department University of California SNOLAB department of Physics and Astronomy Stony Brook University SUNY SCIPP University of California Institute for Experimental Physics Hamburg University department of Physics and Astronomy Iowa State University Kellogg Lab Caltech LHEP Albert Einstein Center University of Ber

A new search for two-neutrino double-beta(2vββ) decay of136Xe to the 01+excited state of136Ba is performed with the full EXO-200 dataset.A deep learning-based convolutional neural network is used to discriminate signal from background *** detection efficiency is increased relative to previous searches by EXO-200 by more than a factor of *** the addition of the Phase Ⅱ dataset taken with an upgraded detector,the median 90%confidence level half-life sensitivity of 2vββ decay to the 01+state of136Ba is 2.9 × 1024yr using a total136Xe exposure of 234.1 kg *** statistically significant evidence for 2vββ decay to the 01+state is observed,leading to a lower limit of T1/22v(0+→01+)>1.4×1024yr at 90% confidence level,improved by 70% relative to the current world’s best constraint.

关键词： EXO-200 experiment neutrinoless double beta decay excited state