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费城儿童医院

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建筑技艺 2009年第6期15卷 37-43页

作者： Scott McDonald ba.ry halkin driscoll KPF

作为《美国新闻》、《世界报道》和《儿童杂志》等多家网络媒体与杂志2004年度评选的全美最好的儿童医院，费城儿童医院的病患服务需求量前所未有的增长。医院必须满足最大的设施扩建。

关键词：儿童医院费城网络媒体需求量杂志

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Vertically aligned nanocomposite films by self-assembled epitaxial nucleation for super-broadband transparent conductors

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InfoMat 2023年第4期5卷 14-24页

作者： Youngkyoung Ha Judith L.MacManus-driscoll Shinbuhm Lee Department of Physics and Chemistry DGISTDaeguRepublic of Korea Department of Emerging Materials Science DGISTDaeguRepublic of Korea Department of Materials Science and Metallurgy University of CambridgeCambridgeUK

Designing super-broadband transparent conductors is challenging because of the exclusive nature of conductivity and infrared ***,using a one-step process,we created vertically aligned nanocomposite conducting films with high transparency across a super-broad wavelength *** aligned transparent ba_(3)V_(2)O_(8)nanocolumns with lateral-100-nm widths enable high transmittance(>50%,even at a 4-μm wavelength)for all incident light and outperform that of Sn-doped In_(2)O_(3),while the conducting SrVO_(3)matrix retains low resistivity(ba_(3)V_(2)O_(8)nanocolumns in a SrVO_(3)matrix film occurs via self-assembled epitaxial *** vertically aligned nanocomposite films provide a fertile platform for next-generation optoelectronics.

关键词： epitaxial nucleation spontaneous phase separation SrVO_(3)-ba_(3)V_(2)O_(8) super-broadband transparent conductors vertically aligned nanocomposite films

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Large ferro-pyro-phototronic effect in 0.5ba(Zr_(0.2)Ti_(0.8))O_(3)-0.5(ba_(0.7)Ca_(0.3))TiO_(3)thin films integrated on silicon for photodetection

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Carbon Energy 2023年第6期5卷 1-10页

作者： JoséP.B.Silva Katarzyna Gwozdz Luís S.Marques Mario Pereira Maria J.M.Gomes Judith L.MacManus‐driscoll Robert L.Z.Hoye Centre of Physics of Universities of Minho and Porto(CF‐UM‐UP) University of MinhoBragaPortugal Laboratory of Physics for Materials and Emergent Technologies LapMETUniversity of MinhoBragaPortugal Department of Quantum Technologies Faculty of Fundamental Problems of TechnologyWroclaw University of Science and TechnologyWroclawPoland Department of Materials Science and Metallurgy CambridgeUK Inorganic Chemistry Laboratory Department of ChemistryUniversity of OxfordOxfordUK Department of Materials Imperial College LondonLondonUK

Coupling together the ferroelectric,pyroelectric,and photovoltaic characteristics within a single material is a novel way to improve the performance of *** this work,we take advantage of the triple multifunctionality shown by 0.5ba(Zr_(0.2)Ti_(0.8))O_(3)-0.5(ba_(0.7)Ca_(0.3))TiO_(3)(BCZT),as demonstrated in an Al/Si/SiOx/BCZT/ITO thin-film *** Si/SiOx acts as an n-type layer to form a metal-ferroelectric-insulator-semiconductor heterostructure with the BCZT,and with Al and ITO as *** photo-response of the device,with excitation from a violet laser(405 nm wavelength),is carefully investigated,and it is shown that the photodetector performance is invariant with the chopper frequency owing to the pyro-phototronic effect,which corresponds to the coupling together of the pyroelectric and photovoltaic ***,the photodetector performance was significantly better than that of the devices operating based only on the pyro-phototronic effect by a factor of 4,due to the presence of ferroelectricity in the ***,after a poling voltage of−15 V,for a laser power density of 230mW/cm^(2)and at a chopper frequency of 400Hz,optimized responsivity,detectivity,and sensitivity values of 13.1mA/W,1.7×10^(10)Jones,and 26.9,respectively,are ***,ultrafast rise and fall times of 2.4 and 1.5μs,respectively,are obtained,which are 35,000 and 36,000 times faster rise and fall responses,respectively,than previous reports of devices with the ferro-pyro-phototronic *** is understood based on the much faster ferroelectric switching in ferroelectric thin films owing to the predominant 180°domains in a single direction out of plane.

关键词： ferroelectric ferro-pyro-phototronic effect photodetector polarization-controlled response

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Optimisation of pulsed laser deposited ba_(1-x)K_(x)BiO_(3)thin films with tunable superconducting properties by control of K doping level,x

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Superconductivity 2024年第3期11卷 66-72页

作者： A.Kursumovic J.Prestigiacomo M.de h-Óra W.Li J.Feighan V.Smolyaninova I.Smolyaninov M.Osofsky J.L.MacManus-driscoll Department of Materials Science and Metallurgy University of CambridgeCB3 OFS CambridgeUnited Kingdom Department of Physics Astronomy and Geosciences Towson University 8000 York Rd.TowsonMD 21252USA Materials Science and Technology Division Naval Research LaboratoryWashington DC20375USA Saltenna LLC 1751 Pinnacle Dr.Ste.600McLeanVA 22102-4007 USA

The mid-T_(C) superconductor ba1-XKXBiO3(BKBO)exhibits different superconducting mechanisms depending on x,in the range∼0.35–*** optimal doping for the highest T_(C) is reported to be around x=*** understand more about the dependence of the superconducting mechanism on x,high quality and reproducible epitaxial films with controlled x are *** has been challenging owing to the volatility of K and(to a lesser extent)*** this work,we use pulsed laser deposition(PLD)with several novel process steps to achieve high-quality films in a reproducible *** include a modified method for target preparation,a low NO_(2) growth pressure,and precise positioning of substrates in the PLD *** T_(C) films(32 K onset)were grown from an x=0.4 target,*** no excess K,as is normally ***,higher K content films(made from an x=0.45 target),were also *** x=0.45 films had a lower T_(C) (22.5 K onset),as expected for(K)overdoped films,with very high upper critical field,H_(C2) (0 K),and irreversibility field,Hirr(0 K),values,from linear extrapolation,of∼31.7 T and∼28.8 T,*** growth methodology demonstrated in this work is highly beneficial for fundamental mechanistic studies of this complex superconductor on which there is renewed interest,and where controlled compositions and crystalline quality are currently limited.

关键词： doping superconductor superconducting

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