PUBLICATIONS

2019 

Consistent probe spacing in multi-probe STM experiments

October 7, 2020

Onoda, J., Vick, D., Salomons, M., Wolkow, R.A., Pitters, J., AIP Advances, 10, 105213.

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Atomic defect classification of the H–Si(100) surface through multi-mode scanning probe microscopy

September 7, 2020

Croshaw, J., Dienel, T., Huff, T., Wolkow, R.A., Beilstein J. Nanotechnol., 11, 1346-1360.

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Deep learning-guided surface characterization for autonomous hydrogen lithorgraphy

March 18, 2020

Rashidi, M., Croshaw, J., Mastel, K., Tamura, M., Hosseinzadeh, H., Wolkow, R.A., IOPScience, 1, 2.

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SiQAD: A Design and Simulation Tool for Atomic Silicon Quantum Dot Circuits

January 24, 2020

Ng., S., Retallick, J., Chiu, H.N., Lupoiu, M., Livadaru, L., Huff, T., Rashidi, Vine, W, Dienel, T., Wolkow, R.A., Walus, K., IEEE Transactions on Technology, 1-1

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Detecting and Directing Single Molecule Binding Events on H-Si(100) with Application to Ultradense Data Storage

November 7, 2019

Achal, R., Rashidi, M., Croshaw, J., Huff, T., Wolkow, R.A., ACS Nano, 9b07637

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Electrostatic Landscape of a Hydrogen-Terminated Silicon Surface Probed by a Moveable Quantum Dot

August 6, 2019

Huff, T., Dienel, T., Rashidi, M., Achal, R., Livadaru, L., Croshaw, J., Wolkow, R.A., ACS Nano 

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Autonomous Atomic Scale Manufacturing Through Machine Learning

February 23, 2019

Rashidi, M., Croshaw, J., Mastel, K., Tamura, M., Hosseinzadeh, H., Wolkow, R.A., arXiv:1902.08818

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Charging of electron beam irradiated amorphous carbon thin films at liquid nitrogen temperature

January 7, 2019

Hettler, S., Onoda, J., Wolkow, R., Pitters, J., Malac, M., Ultramicroscopy, 196, 161-166  

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Binary atomic silicon logic

December 13, 2018

Huff, T., Labidi, H., Rashidi, M., Livadaru, L., Dienel, T., Achal, R., Vine, W., Pitter, J., Wolkow, R.A., Nature Electronics, 1, 636-643

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Initiating and monitoring the evolution of single electrons within atom-defined structures

October 15, 2018

Rashidi, M. Vine, W., Dienel, T., Livadaru, L., Retallick, J., Huff, T., Walus, K., Wolkow, R.A. Phys. Rev. Lett., 121, 166801

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Lithography for robust and editable atomic-scale silicon devices and memories

July 23, 2019

Achal, R., Rashidi, M., Croshaw, J., Churchill, D., Taucer, M., Huff, T., Cloutier, M., Pitters, J.L., Wolkow, R.A. Nature Communications, 9, 2778 

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Selective production of hydrogen ion species at atomically designed nanotips

March 1, 2018

Moritani, H., Urban, R., Nova, K., Salomons, M., Wolkow, R.A., Pitters, J. Ultramicroscopy, 186, 42-48

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Autonomous Scanning Probe Microscopy in Situ Tip Conditioning through Machine Learning

May 23, 2018

Rashidi, M., Wolkow, R.A., ACS Nano, 12(6), 5185-5189

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All-electronic Nanosecond-resolving Scanning Tunneling Microscopy: Facilitating the Investigation of Single Dopant Charge Dynamics

January 19, 2018

Rashidi, M., Vine, W., Burgess, J.A.J., Taucer, M., Achal, R., Pitters, J.L., Loth, S., Wolkow, R.A., J. Vis. Exp.,131, e56861

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Resolving and Tuning Carrier Captures Rates at a Single Silicon Atom Gap State, 

November 1, 2017

Rashidi, M., Lloyd, E., Huff, T., Achal, R., Taucer, M., Croshaw, J., Wolkow, R.A., ACS Nano, 11(11), 11732-11738 

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Atomic White-Out: Enabling Atomic Circuitry through Mechanically Induced Bonding of Single Hydrogen Atoms to a Silicon Surface

July 18, 2017

​Huff, T., Labidi, H., Rashidi, M., Koleini, M., Achal, R., Salomons, M.H., Wolkow, R.A., ACS Nano, 11(9), 8636-8642

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Indications of chemical bond contrast in AFM images of a hydrogen-terminated silicon surface

February 13, 2017

​Labidi H., Koleini, M., Huff, T., Salomons, M., Cloutier, M., Pitters, J.L., Wolkow, R.A., Nature Communications, 8, 14222

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Time-Resolved Single Dopant Charge Dynamics in Silicon

October 26, 2016

​Rashidi, M., Burgess, J., Taucer, M., Achal, R., Pitters, J.L, Loth, S., Wolkow, R.A., Nature Communications (7), 13258

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Time-Resolved Imaging of Negative Differential Resistance on the Atomic Scale

December 30, 2016

Rashidi, M., Taucer, M., Ozfidan, I., Lloyd, E., Koleini, M., Labidi, H., Pitters, J.L., Maciejko, J., Wolkow, R.A., Physical Review Letters (117), 276805

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Quantum Transport in Gated Dangling-Bond Atomic Wires

December 5, 2016

Bohloul, S., Shi, Q., Wolkow, R.A., Guo, H., Nano Letters, 17(1), 322-327

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Reactive Gas Ion Beam Generation Using Single Atom W (111) Gas Field Ion Sources

July 1, 2016

​Urban, R., Moritani, H., Wolkow, R.A., Pitters, J.L., Microscopy and Microanalysis (100), 616-617

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Iridium single atom tips fabricated by field assisted reactive gas etching

March 30, 2016

​Wood, J.A., Urban, R., Salomons, M., Cloutier, M., Wolkow, R.A., Pitters, J.L., Applied Surface Science (267), pp. 277-280 (2016)

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Hydrogen Ion Beams from Nanostructured Gas Field Ion Sources

July 1, 2016

​Moritani, H., Urban, R., Salomons, M., Wolkow, R.A., Pitters, J., Microscopy and Microanalysis, 22(S3), 612-613

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Understanding Charge Dynamics in Silicon Dangling Bond Structures for Nanoscale Devices

January 1, 2016

Livadaru, L., Pitters, J.L., Taucer, M., Wolkow, R.A., NanoTech (1), 35-37

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Multiple Silicon Atom Artificial Molecules

July 20, 2016

Wood, J.A., Rashidi, M., Pitters, J.L., Wolkow, R.A, arXiv:1607.06050

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New fabrication technique for highly sensitive qPlus sensor with well-defined spring constant

November 1, 2015

Hatem Labidi, Martin Kupstab, Taleana Huff, Mark Salomons, Douglas Vick, Marco Taucera, Jason Pitters, Robert A. Wolkow, Ultramicroscopy (158), 33–37

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Scanning tunneling spectroscopy reveals a silicon dangling bond charge state transition

July 1, 2015

​Hatem Labidi, Marco Taucer, Mohammad Rashidi, Mohammad Koleini, Lucian Livadaru, Jason Pitters, Martin Cloutier, Mark Salomons and Robert A. Wolkow, New J. Phys. (17), 073023 

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Consequences of Many-Cell Correlations in Clocked Quantum-Dot Cellular Automata

April 30, 2015

​Marco Taucer, Faizal Karim, Konrad Walus, Robert A. Wolkow, Nanotechnology, IEEE Transactions (14.4), 638-647 

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Method of fabricating nanotips with controlled profile

April 11, 2015

Jason L. Pitters, Radovan Urban, Robert A. Wolkow, US Patent 9,102.190 

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Method for controlling quantum dot device by perturbing dangling bond electronic states

December 15, 2015

​Gino A. DiLabio, Robert A. Wolkow, Jason L. Pitters, Paul G. Piva., US Patent 9,213,945

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Atom-scale surface reactivity mediated by long-ranged equilibrium charge transfer

October 13, 2014

​Paul G. Piva, Gino A. DiLabio, Lucian Livadaru, and Robert A. Wolkow, Phys. Rev., B 90, 155422

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Evaluating Angular Ion Current Density for Atomically Defined Nanotips

October 1, 2014

Radovan Urban, Robert A. Wolkow, Jason L. Pitters, Microscopy and Microanalysis 20(05), 1514-1520

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Single-Electron Dynamics of an Atomic Silicon Quantum Dot on the H− Si (100)−(2× 1) Surface

June 26, 2014

Marco Taucer, Lucian Livadaru, Paul G. Piva, Roshan Achal, Hatem Labidi, Jason L. Pitters, and Robert A. Wolkow., Physical review letters, 112(25), 256801

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Conductivity of Si (111)-(7× 7): the role of a single atomic step

June 18, 2014

​Bruno V. C. Martins, Manuel Smeu, Lucian Livadaru, Hong Guo, and Robert A. Wolkow, Physical review letters 112(24), 246802.

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Robustness of tungsten single atom tips to thermal treatment and air exposure

May 1, 2014

Cristian Vesaa, Radovan Urban, Jason L. Pitters, Robert A. Wolkow, Applied Surface Science 300,16-21

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Four-probe measurements with a three-probe scanning tunneling microscope

April 1, 2014

Mark Salomons, Bruno V. C. Martins, Janik Zikovsky, Robert A. Wolkow, Review of Scientific Instruments 85(4), 045126

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Characterizing the rate and coherence of single-electron tunneling between two dangling bonds on the surface of silicon

January 28, 2014

​Zahra Shaterzadeh-Yazdi, Lucian Livadaru, Marco Taucer, Josh Mutus, Jason Pitters, Robert A. Wolkow, Barry C. Sanders, Physical Review B, 89(3), 035315.

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Silicon atomic quantum dots enable beyond-cmos electronics

June 1, 2014

​Robert A. Wolkow, Lucian Livadaru, Jason Pitters, Marco Taucer, Paul Piva, Mark Salomons, Martin Cloutier, Bruno V.C. Martins, Field-Coupled Nanocomputing. Springer Berlin Heidelberg, 33-58

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Tip apex shaping of gas field ion sources

August 1, 2013

Pitters, J.L., Urban, R., Vesa, C., Wolkow, R.A., Ultramicroscopy,131, 56-60

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Nanoscale structuring of tungsten tip yields most coherent electron point-source

July 1, 2013

​Mutus, J., Livadaru, L., Urban, R., Pitters, J.L., Legg, P., Salomons, M., Cloutier, M., Wolkow, R.A., New Journal of Physics,15, 103031

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Field ion microscope evaluation of tungsten nanotip shape using He and Ne imaging gases

November 1, 2012

Urban, Radovan, Robert A. Wolkow, and Jason L. Pitters, Ultramicroscopy 122 (2012): 60-64

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Organic nanostructures on hydrogen-terminated silicon report on electric field modulation of dangling bond charge state

June 25, 2012

​Ryan, P.M., Livadaru, L., DiLabio, G.A., Wolkow, R.A., Journal of the American Chemical Society,134(29), 12054-12063

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Gas field ion source current stability for trimer and single atom terminated W (111) tips

June 1, 2012

​Urban, Radovan, Jason L. Pitters, and Robert A. Wolkow, Applied Physics Letters 100.26 (2012): 263105

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Electronic properties of Si (111)-7× 7 and related reconstructions: Density functional theory calculations

May 14, 2012

​Manuel Smeu, Hong Guo, Wei Ji, Robert A. Wolkow, Physical Review B85.19 (2012): 195315

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Silicon surface conductance investigated using a multiple-probe scanning tunneling microscope

April 21, 2012

​Zikovsky J, Salomons M, Dogel S, Wolkow R.A., Atomic Scale Interconnection Machines: Proceedings of the 1st AtMol European Workshop, 167-180

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Dopant depletion in the near surface region of thermally prepared silicon (100) in UHV

March 1, 2012

Pitters, Jason L., Paul G. Piva, and Robert A. Wolkow, Journal of Vacuum Science & Technology B 30.2 (2012): 021806

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Creation and recovery of a W (111) single atom gas field ion source

March 1, 2012

​Pitters, Jason L., Radovan Urban, and Robert A. Wolkow, The Journal of chemical physics 136.15 (2012): 154704

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Conduction modulation of π-stacked ethylbenzene wires on Si (100) with substituent groups

January 1, 2012

​Smeu, Manuel, Robert A. Wolkow, Hong Guo, Theoretical Chemistry Accounts 131.1 (2012): 1-8

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Theory of nonequilibrium single-electron dynamics in STM imaging of dangling bonds on a hydrogenated silicon surface

November 1, 2011

Lucian Livadaru, Jason Pitters, Marco Taucer, Robert A. Wolkow, Physical Review B, 84(20), 205416

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Limits of elemental contrast by low energy electron point source holography

September 1, 2011

​Livadaru, Lucian, Josh Mutus, Robert A. Wolkow, Journal of Applied Physics, 110(9), 094305

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Low-energy electron point projection microscopy of suspended graphene, the ultimate 'microscope slide'

June 8, 2011

​Mutus J. Y., Livadaru L., Robinson J. T., New J. Phys., 13, 063011

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Tunnel coupled dangling bond structures on hydrogen terminated silicon surfaces

February 14, 2011

​Jason L. Pitters, Lucian Livadaru, M. Baseer Haider, Robert A. Wolkow, The Journal of Chemical Physics 134(6), 064712

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Charge control of surface dangling bonds using nanoscale schottky contacts

February 10, 2011

​Jason L. Pitters., Iana A. Dogel, and Robert A. Wolkow, ACS nano, 5(3), 1984-1989

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Indications of field-directing and self-templating effects on the formation of organic lines on silicon

February 1, 2011

Janik Zikovsky, Stanislav A. Dogel, Mark H. Salomons, Jason L. Pitters, Gino A. DiLabio, Robert A. Wolkow, The Journal of Chemical Physics134(11), 114707

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Dangling-bond charge qubit on a silicon surface

Augst 9, 2010

​Lucian Livadaru , Peng Xue , Zahra Shaterzadeh-Yazdi, Gino A DiLabio, Josh Mutus, Jason L Pitters, Barry C Sanders, Robert A Wolkow, New J. Phys. 12 083018-32 (2010)

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Conduction Pathway of pi-Stacked Ethylbenzene Molecular Wires on Si(100)

August 12, 2009

​Smeu, M., Wolkow, R.A., Hong, G., J.Amer.Chem. Soc., 131, 11019-11026

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Modulation of electrical conduction through individual molecules on silicon by the electrostatic fields of nearby polar molecules: Theory and experiment

July 14, 2009

​George Kirczenow, Paul G. Piva, Robert A. Wolkow, Phys. Rev. B, 80, 35309-30 (2009)

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Tuning tunneling current rectification with chemical modification of silicon(100) surfaces

February 1, 2009

Sinha, S., Dickie, A.J., Wolkow, R.A., Chem.Phys.Lett., 469, 279-83

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Reaction of a hydrogen-terminated Si(100) surface in UHV with ion-pump generated radicals

March 1, 2009

​Zikovsky,S., Dogel, A., Dickie, A.J., Pitters, J.L., Wolkow, R.A., J.Vac.Sci.Technol. A, 27, 248-52

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Controlled Coupling and Occupation of Silicon Atomic Quantum Dots at Room Temperature

January 27, 2009

M.Baseer Haider, Jason.L. Pitters, Gino A.DiLabio, Lucian Livadaru, Josh Y. Mutusand Robert A. Wolkow, Phys.Rev.Lett., 102, 46805-8 (2009)

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