D
Douglas A. A. Ohlberg
Researcher at Hewlett-Packard
Publications - 67
Citations - 8108
Douglas A. A. Ohlberg is an academic researcher from Hewlett-Packard. The author has contributed to research in topics: Nanowire & Scanning tunneling microscope. The author has an hindex of 30, co-authored 65 publications receiving 7673 citations.
Papers
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Journal ArticleDOI
Memristive switching mechanism for metal/oxide/metal nanodevices.
Jianhua Yang,Matthew D. Pickett,Xuema Li,Douglas A. A. Ohlberg,Duncan Stewart,R. Stanley Williams +5 more
TL;DR: Experimental evidence is provided to support this general model of memristive electrical switching in oxide systems, and micro- and nanoscale TiO2 junction devices with platinum electrodes that exhibit fast bipolar nonvolatile switching are built.
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The mechanism of electroforming of metal oxide memristive switches
Jianhua Yang,Feng Miao,Matthew D. Pickett,Douglas A. A. Ohlberg,Duncan Stewart,Chun Ning Lau,R. Stanley Williams +6 more
TL;DR: The nature of the oxide electroforming as an electro-reduction and vacancy creation process caused by high electric fields and enhanced by electrical Joule heating is explained with direct experimental evidence.
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Shape Transition of Germanium Nanocrystals on a Silicon (001) Surface from Pyramids to Domes
Gilberto Medeiros-Ribeiro,Alexander Bratkovski,Theodore I. Kamins,Douglas A. A. Ohlberg,R. Stanley Williams +4 more
TL;DR: In situ scanning tunneling microscopy revealed that the smaller square-based pyramids transform abruptly during growth to significantly larger multifaceted domes, and that few structures with intermediate size and shape remain.
Journal ArticleDOI
Nanoscale molecular-switch crossbar circuits
Yong Chen,Gun Young Jung,Douglas A. A. Ohlberg,Xuema Li,Duncan Stewart,Jan O. Jeppesen,Kent A. Nielsen,J. Fraser Stoddart,R. Stanley Williams +8 more
TL;DR: In this paper, the authors describe the fabrication and testing of nanoscale molecular-electronic circuits that comprise a molecular monolayer of [2] rotaxanes sandwiched between metal nanowires to form an 8 × 8 crossbar within a 1 µm 2 area.
Journal ArticleDOI
Molecule-Independent Electrical Switching in Pt/Organic Monolayer/Ti Devices
Duncan Stewart,Douglas A. A. Ohlberg,Patricia A. Beck,Yan-Feng Chen,R. Stanley Williams,Jan O. Jeppesen,Jan O. Jeppesen,Kent A. Nielsen,Kent A. Nielsen,J. Fraser Stoddart +9 more
TL;DR: In this article, a Langmuir−Blodgett molecular monolayer sandwiched between planar platinum and titanium metal electrodes functioned as switches and tunable resistors over a 102−105 Ω range under current or voltage control.