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6篇 您的检索式:作者名="E.Palmer"
    题名 作者 年代 出处 被引量
1Review显示文摘Richard E.Palmer 0,,03:1
2Angiotensin‐converting enzyme (ACE) levels and activity in Alzheimer’s disease, and relationship of perivascular ACE‐1 to cerebral amyloid angiopathy显示文摘J. S.Miners E.Ashby Z.Van Helmond K. A.Chalmers L. E.Palmer S.Love P. G.Kehoe 2007Neuropathology and Applied Neurobiology2007,,2:1
3YopJ of Yersinia pseudotuberculosis is required for the inhibition of macrophage TNF‐α production and downregulation of the MAP kinases p38 and JNK显示文摘Lance E.Palmer SilkeHobbie Jorge E.Galán James B.Bliska 2002Molecular Microbiology2002,,:1
4Angular dependence of nanoparticle generation in the matrix assembly cluster source显示文摘The matrix assembly cluster source(MACS)represents a bridge between conventional instruments for cluster beam deposition(CBD)and thelevel of industrial production.The method is based on Ar^+ion sputtering of a pre-condensed Ar-M matrix(where M,is typically a metal such asAg).Each Ar^+ion produces a collision cascade and thus the formation of metal clusters is in the matrix,which are then sputtered out.Here wepresent an experimental and computational investigation of the cluster emission process,specifically its dependence on the Ar^+ion angle of in cidence and the cluster emission angle.We find the in cide nee angle strongly in flue nces the emerging cluster flux,which is assigned to thespatial location of the deposited primary ion energy relative to the cluster into the matrix.We also found an approximately constant anglebetween the incident ion beam and the peak in the emitted cluster distribution,with value between 99°and 109°.Maria Chiara Spadaro Junlei Zhao William D.Terry Jian Liu Feng Yin Flyura Djurabekova Richard E.Palmer 2019Nano Research2019,12,12:1
5Neuromorphic nanocluster networks:Critical role of the substrate in nano-link formation显示文摘Atomic cluster-based networks represent a promising architecture for the realization of neuromorphic computing systems,which may overcome some of the limitations of the current computing paradigm.The formation and breakage of links between the clusters are of utmost importance for the functioning of these computing systems.This paper reports the results of molecular dynamics simulations of synapse(bridge)formation at elevated temperature and thermal breaking processes between 2.8 nmsized Au1415 clusters deposited on a carbon substrate,a model system.Crucially,we find that the bridge formation process is driven by the diffusion of gold atoms along the substrate,no matter how small the gap between the clusters themselves.The complementary simulations of the bridge breaking process reveal the existence of a threshold bias voltage to activate bridge rupture via Joule heating.These results provide an atomistic-level understanding of the fundamental dynamical processes occurring in neuromorphic cluster arrays.Wenkai Wu Alexey V.Verkhovtsev Theodoros Pavloudis Andrey V.Solov’yov Richard E.Palmer 2023Nano Research2023,16,7:0
6Combining scanning tunneling microscope (STM) imaging and local manipulation to probe the high dose oxidation structure of the Si(111)-7×7 surface显示文摘Understanding the atomistic formation of oxide layers on semiconductors is important for thin film fabrication,scaling down conventional devices and for the integration of emerging research materials.Here,the initial oxidation of Si(111)is studied using the scanning tunneling microscope.Prior to the complete saturation of the silicon surface with oxygen,we are able to probe the atomic nature of the oxide layer formation.We establish the threshold for local manipulation of inserted oxygen sites to be+3.8 V.Only by combining imaging with local atomic manipulation are we able to determine whether inserted oxygen exists beneath surface-bonded oxygen sites and differentiate between sites that have one and more than one oxygen atom inserted beneath the surface.Prior to the creation of the thin oxide film we observe a flip in the manipulation rates of inserted oxygen sites consistent with more oxygen inserting beneath the silicon surface.Dogan Kaya Richard J.Cobley Richard E.Palmer 2020Nano Research2020,13,1:0
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