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Integrated optical-readout of a high-Q mechanical out-of-plane mode

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Light(Science & Applications) 2022年第10期11卷 2485-2491页

作者： Jingkun Guo simon Groblacher Kav.i Institute of Nanoscience Department of Quantum NanoscienceDelft University of Technology2628CJ DelftThe Netherlands

The rapid dev.lopment of high-QM macroscopic mechanical resonators has enabled great adv.nces in *** improv.ments could allow for quantum-limited or quantum-enhanced applications at ambient *** of the remaining challenges include the integration of high-QM structures on a chip,while simultaneously achiev.ng large coupling strengths through an optical ***,we present a v.rsatile fabrication method,which allows us to build fully integrated optomechanical *** place a photonic crystal cav.ty directly abov. a mechanical resonator with high-QM fundamental out-of-plane mode,separated by a small *** highly confined optical field has a large ov.rlap with the mechanical mode,enabling strong optomechanical interaction ***,we implement a nov.l photonic crystal design,which allows for a v.ry large cav.ty photon number,a highly important feature for optomechanical experiments and sensor *** v.rsatile approach is not limited to our particular design but allows for integrating an out-of-plane optical read-out into almost any dev.ce ***,it can be scaled to large arrays and pav.s the way to realizing quantum experiments and applications with mechanical resonators based on high-QM out-of-plane modes alike.

关键词： optical resonator mode

Effect of Surfactants on the Thermoelectric Performance of Double-Walled Carbon Nanotubes

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Energy & Env.ronmental Materials 2023年第1期6卷 274-280页

作者： Zakaria Saadi simon G.King Jose v.Anguita v.ad Stolojan S.Rav. P.Silv. Department of Electrical and Electronic Engineering Advanced Technology InstituteUniversity of SurreyGuildford GU27XHUK

Thermoelectrics are a promising solution to the recov.ry of some of the 60%of the worldwide energy wasted as ***,their conv.rsion efficiency is low and the best performing materials are brittle,toxic,and made of expensiv. *** challenge in dev.loping better performing materials is in disrupting the electrical v. thermal conductiv.ty correlation,to achiev. low thermal conductiv.ty simultaneously with a high electrical *** nanotubes allow for the decoupling of the electronic density of states from the phonon density of states and this paper shows that flexible,thin films of double-walled carbon nanotube(DWCNT)can form effectiv. n-and p-doped semiconductors that can achiev. a combined Seebeck coefficient of 157.6µv.K^(−1),the highest reported for a single DWCNT dev.ce to *** is achiev.d through selected surfactant doping,whose role is correlated with the length of the hydrocarbon chain of the hydrophobic tail group of the surfactant’s *** functionalized with Triton X-405 show the highest output power consisting of a single junction of p-and n-type thermoelectric elements,reaching as high as 67 nW for a 45 K temperature *** enabling flexible,cheaper,and more efficient thermoelectric generators through the use of functionalized CNTs.

关键词： carbon nanotubes DWCNT functionalization surfactant thermoelectric

Arsenobetaine and thio-arsenic species in marine macroalgae and herbiv.rous animals: Accumulated through trophic transfer or produced in situ?

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Journal of Env.ronmental Sciences 2016年第11期28卷 131-139页

作者： simon Foster William Maher Ecochemistry Laboratory Institute for Applied Ecology University of Canberra

Arsenobetaine（AB） and thio-arsenoribosides were measured in common macroalgae species（8 phaeophyta, 4 rhodophyta and 2 chlorphyta）, along the Australian south east coast line. As well, arsenic species profiles were measured for two common marine herbiv.res, the sea urchin Centrostephanus rodgersii and the fish Odax cyanomelas that graze on these macroalgae to understand if trophic transfer of these species would account for their presence in marine herbiv.res. AB was found in sev.n of the fourteen macroalgae species inv.stigated but does not contributed significantly to any of the macroalgae arsenic content（0.01-1.2 μg/g）. AB was found in only two of the brown macroalgae and all the red and green macroalgae（with the exception of Corallina officinalis）. Thio-arsenic species were found sporadically, but not in high concentrations in any of the macroalgae *** present in macroalgae is likely to be associated with epiphytic organisms while thio-arsenoribosides are likely to be produced by decaying parts of damaged macroalgae.A laboratory feeding experiment in which the herbiv.rous gastropod, Austrocochlea constricta, was fed macroalgae containing thio-arsenoribosides for a 24 hr period ev.ry three days showed that these are readily accumulated ov.r a short period. Thio-arsenoribosides in herbiv.res are therefore probably obtained through trophic transfer. Some AB is also obtained through trophic transfer; howev.r, the presence of trimethylated arsonioribosides,a hypothesized precursor of AB formation in herbiv.res, suggests that some AB is produced within herbiv.res from the transformation of arsenoribosides accumulated from their diet.

关键词： Arsenobetaine Arsenic Metabolism Thio-arsenosugars Macroalgae Gastropods

Strong MXene-bridged graphene sheets for compact energy storage

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Science Bulletin 2024年第19期69卷 2959-2960页

作者： Patrice simon Univ.rsitéToulouse III Paul Sabatier Laboratoire CIRIMAT(UMR CNRS 5085)Toulouse 31062France

High v.lumetric energy density energy storage dev.ces are needed for many applications ranging from miniaturized electronics to electric v.hicles[1,2].Two-dimensional(2D)nanosheets,such as graphene,MoS2,and MXene are great candidates for assembling compact sheets[1–5],as their horizontal stacking can achiev. interlayer distances close to the diameter of electrolyte ions[1,6].The electrolyte ions confined between interlayers of those materials significantly improv. the pore and porous v.lume utilization,thus achiev.ng compact energy storage realized by ion desolv.tion[1].

关键词： MXene graphene energy

Holomorphic Factorization of Superstring Scattering Amplitudes

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Communications in Theoretical Physics 2011年第1期55卷 1-5页

作者： simon Dav.s Research Foundation of Southern Califoria

The holomorphic factorization of the superstring partition function is v.rified at arbitrary genus. The ev.luation of scattering amplitudes and the implications of genus-dependent estimates on the string coupling are ... 详细信息

关键词： holomorphic factorization Ramond measure supermoduli space coordinate

Univ.lent Functions and Diff(S^1)/S^1

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Acta Mathematica Sinica,English Series 2012年第6期28卷 1233-1236页

作者： simon DAv.S Research Foundation of Southern California

The relation between Diff（S^1）/S^1 and the space of univ.lent analytic functions on the disk is elucidated and shown to prov.de upper bounds for the v.lumes of exhaustiv. approximations to an analytic submanifold of an infinite-dimensional space. The maximum magnitudes of the coefficients in the series expansions of univ.lent superanalytic functions on the superdisk are inferred.

关键词： Univ.lent diffeomorphism group superanalytic functions

Recalcitrant distal humeral non-union following prev.ous Leiomyosarcoma excision treated with retainment of a radiated non-angiogenic segment augmented with 20 cm free fibula composite graft: A case report

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World Journal of Orthopedics 2019年第4期10卷 212-218页

作者： Martin Gathen Grayson Norris simon Kay Peter v.Giannoudis Department of Orthopedics and Trauma Surgery University Hospital of Bonn Academic Department of Trauma and Orthopaedics School of Medicine University of Leeds Plastic and Reconstructiv. Surgery School of Medicine University of Leeds

BACKGROUND Leiomyosacromas in the Extremities are rare malignant smooth muscle *** radiation therapy, in combination with wide surgical excision allows the best chance of treatment. During the follow up pathological fractures are common complications that can be accompanied by Implant failure and defect situations that are most challenging in their *** SUMMARY We present a case of a 52-year-old female suffering from a pathological fracture of the humeral shaft 10 yr after resection of a Leiomyosarcoma and postoperativ. radiotherapy. She dev.loped implant failure after retrograde nailing and another failure after rev.sion to double plate fixation. In a two-stage rev.sion, the implants were remov.d and the huge segmental defect created after debridement was bridged by a compound osteosynthesis with nancy nails and bone cement for formation of the induced membrane. Due to the prev.ous radiotherapy treatment,20 cm of the humeral shaft were declared dev.scularized but were left in situ as a scaffold. In the second stage, a v.scularized fibula graft was used in combination with a double plate fixation and autologous spongiosa grafts for final *** This combinatory treatment approach led to a successful clinical outcome and can be considered in similar challenging cases.

关键词： Humerus Fibular graft Bone tumor Osseous defect Implant failure Leiomyosarcoma Case report

The QT interv.l in Parkinson′s disease:a systematic rev.ew

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Journal of Geriatric Cardiology 2024年第9期21卷 855-864页

作者： simon W Rabkin Div.sion of Cardiology University of British ColumbiaVancouverBC V5Z 1M9Canada

Background PD(PD)is associated with a twofold increase in the risk of death especially sudden death.A predisposing factor for cardiac sudden death is prolongation of the QT *** study ev.luated the potential association between QT interv.l and *** A systematic search was conducted of Medline and EMBASE using the search terms“PD”AND“QT interv.l”OR“Cardiac Repolarization”to identify *** Sev.n studies with persons with PD(n=981)and control groups were *** was a significant difference in QT interv.l comparing patients with PD and persons without *** odds ratio showed a significant(Pv.l to the sev.rity of PD as assessed by Hoehn–Yahr classification(n=6),there was a significant(P=0.004)ov.rall correlation between QT interv.l and the sev.rity of *** was little publication *** data directly examining patients with PD taking any drug than might prolong QT do not support an association between these mediations and QT *** Indiv.duals with PD hav. a longer QT interv.l than indiv.duals without *** QT interv.l is associated with a greater sev.rity of PD and a greater probability of dev.loping more sev.re *** QT interv.l should be considered in assessment of PD and possibly as a target for the treatment of PD.

关键词： QT QTc Focus

Quasi-morphisms v.a Local Action Data and Quasi-isometries

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Algebra Colloquium 2016年第1期23卷 111-116页

作者： Gabi Ben-simon Department of Mathematics ORT Braude College P.O. Box 78 Karmiel 2161002 Israel

In this work we first present a principle which says that quasi-morphisms can be obtained v.a local data of group action on certain appropriate spaces. In a rough manner the principle says that instead of starting with a giv.n group and trying to build or study its space of quasi-morphisms, we should start with a space with a certain structure, in such a way that groups acting on this space and respecting this structure will automatically carry quasi-morphisms, where these are supposed to be better understood. This principle plays an important role in the second result of this paper, which is a univ.rsal embedding of the projectiv. space of the linear space of quasi-morphisms of any giv.n countable group, into the space of quasi-isometries of a certain univ.rsal metric space.

关键词： quasi-rnorphisms discrete groups quasi-isometries