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You are here Research > Research Groups > Applied Physics Research Group > Group Members

Group Member

Barry Murphy
Research Fellow, Physics

Publications and Further Research Outputs

Peer-Reviewed Publications

Wu, H.-C., Chaika, A.N., Huang, T.-W., Syrlybekov, A., Abid, M., Aristov, V.Y., Molodtsova, O.V., Babenkov, S.V., Marchenko, D., Sánchez-Barriga, J., Mandal, P.S., Varykhalov, A.Y., Niu, Y., Murphy, B.E., Krasnikov, S.A., Lübben, O., Wang, J.J., Liu, H., Yang, L., Zhang, H., Abid, M., Janabi, Y.T., Molotkov, S.N., Chang, C.-R., Shvets, I., Transport Gap Opening and High On-Off Current Ratio in Trilayer Graphene with Self-Aligned Nanodomain Boundaries, ACS Nano, 9, (9), 2015, p8967-8975 Journal Article, 2015

Chaika, A.N., Molodtsova, O.V., Zakharov, A.A., (...), Shvets, I.V., Aristov, V.Y., Rotated domain network in graphene on cubic-SiC(001), Nanotechnology , 25, (13), 2014, pArticle number 135605 Journal Article, 2014 DOI TARA - Full Text

Grushko, V., Lübben, O., Chaika, A.N., (...), Krasnikov, S.A., Shvets, I.V., Atomically resolved STM imaging with a diamond tip: Simulation and experiment, Nanotechnology, 25, (2), 2014, pArticle number 025706 Journal Article, 2014 TARA - Full Text DOI

Murphy, B.E. Krasnikov, S.A. Sergeeva, N.N. Cafolla, A.A. Preobrajenski, A.B. Chaika, A.N. Lübben, O. Shvets, I.V., Homolytic cleavage of molecular oxygen by manganese porphyrins supported on Ag(111), ACS Nano, 8, (5), 2014, p5190 - 5198 Journal Article, 2014 TARA - Full Text URL DOI

Sergey I Bozhko, Sergey A Krasnikov, Olaf Lübben, Barry E Murphy, Kevin Radican, Valery N Semenov, Han-Chun Wu, Egor A Levchenko, Alexander N Chaika, Natalia N Sergeeva, Igor V Shvets, Correlation between charge-transfer and rotation of C60 on WO2/W (110), Nanoscale, 5, (8), 2013, p3380-3386 Journal Article, 2013

Krasnikov, S.A., Lübben, O., Murphy, B.E., (...), Bulfin, B., Shvets, I.V., Writing with atoms: Oxygen adatoms on the MoO2/Mo(110) surface, Nano Research, 6, (12), 2013, p929-937 Journal Article, 2013 DOI TARA - Full Text

Bulfin, B., Lowe, A.J., Keogh, K.A., (...), Krasnikov, S.A., Shvets, I.V. , Analytical model of CeO2 Oxidation and Reduction, The Journal of Physical Chemistry C, 117, (46), 2013, p24129 - 24137 Journal Article, 2013 TARA - Full Text DOI

BE Murphy, SA Krasnikov, AA Cafolla, NN Sergeeva, NA Vinogradov, JP Beggan, O Lubben, MO Senge, IV Shvets, Growth and ordering of Ni(II) diphenylporphyrin monolayers on Ag(111) and Ag/Si(111) studied by STM and LEED , Journal of Physics: Condensed Matter, 24, 2012, p045005 - 6 Journal Article, 2012 TARA - Full Text URL

B. Buflin, B. E. Murphy, O. Luebben, S. A. Krasnikov, I. V. Shvets, Finite element method simulations of heat flow in fixed bed solar water splitting redox reactors, International Journal of Hydrogen Energy, - (-), 2012, - - Journal Article, 2012 TARA - Full Text URL DOI

Lübben, O., Krasnikov, S.A., Preobrajenski, A.B., Murphy, B.E., Bozhko, S.I., Arora, S.K., Shvets, I.V., Self-assembly of Fe nanocluster arrays on templated surfaces, Journal of Applied Physics, 111, (7), 2012, part. no. 07B515 Journal Article, 2012 TARA - Full Text DOI

Sergey I. Bozhko, Sergey A. Krasnikov, Olaf Lübben, Barry E. Murphy, Kevin Radican, Valery N. Semenov, Han Chun Wu, Brendan Bulfin, and Igor V. Shvets, Rotational transitions in a C60 monolayer on the WO2/W(110) surface, Physical Review B, 84, (19), 2011, p8 Journal Article, 2011 URL TARA - Full Text DOI

O. Lubben, SA Krasnikov, AB Preobrajenski, BE Murphy, IV Shvets, Fe Nanoclusters on the Ge(001) Surface Studied by Scanning Tunnelling Microscopy, Density Functional Theory Calculations and X-Ray Magnetic Circular Dichroism, Nano Research, 4, (10), 2011, p971 - 978 Journal Article, 2011 DOI TARA - Full Text

Krasnikov, SA, Bozhko, SI, Radican, K, Lubben, O, Murphy, BE, Vadapoo, SR, Wu, HC, Abid, M, Semonov, VN, Shvets, IV, Self-Assembly and Ordering of C-60 on the WO2/W(110) Surface, NANO RESEARCH, 4, (2), 2011, p194 - 203 Journal Article, 2011 TARA - Full Text

Barry Murphy is a Postdoctoral Research Fellow with the APRG, currently working on a commercialisation project involving power electronics and monitoring power grid assets, and fundamental research using scanning tunneling microscopy.

Research

  • Organic molecular self-assembly
  • Determination of surface reactivity and charge transfer using Scanning Tunneling Microscopy (STM)
  • Observation of chemical reactions by STM
  • Atomic- and subatomic-resolution STM
  • Formation of extended molecular networks
  • Multi-component molecular monolayers
  • Commercialisation & innovation
  • Interactive online learning
  • Physics teaching with modern technology

Links

Background

I earned a B.A. Moderatorship in Physics & Computer Simulation from TCD in 2009, and joined the APRG as a PhD student later that year. In 2013 I defended my PhD thesis, titled The Physico-Chemical Properties of Fullerenes and Porphyrin Derivatives Deposited on Conducting Surfaces, which can be downloaded here (PDF, 47MB).

My main expertise is in Scanning Tunneling Microscopy (STM) and Ultra-high Vacuum (UHV), as well as the simulation of physical systems by Density Functional Theory (DFT). I am also heavily involved in fundraising for the group and have helped raise over half a million euro in research funding.

Current work

I'm delighted to be working on a commercialisation project funded by Enterprise Ireland and Science Foundation Ireland. The project focuses on monitoring and analytics of power distribution grid assets, and we hope to launch commercially in the next 12-18 months.

My current fundamental research is focussed on the growth of graphene on low-cost substrates of industrial relevance and the vicinal surfaces of silicon crystals.

Data visualisation (Dynamic Dublin)

I am very interested in novel ways to present data, and in 2012 I formed a team to explore ways to visualise the traffic patterns of Dublin Bikes (shared bike scheme) around the city. As part of HACK THE CITY at the Science Gallery, from July to September 2012, thousands of members of the public had a chance to explore our data using a custom-designed flash app and to contribute to future Dublin planning by suggesting new sites for Dublin Bikes stations.

Heat map showing the concentration of public Dublin Bikes across Dublin city centre.

Organic molecular self-assembly

My PhD thesis was focussed on using STM and complementary techniques such as NEXAFS and DFT simulation to probe the physical and chemical properties of organic molecules when deposited on a range of substrates. Most of my work was based on two families of molecules, C60 fullerenes and transition-metal porphyrins. The surfaces I looked at were Ag(111), Ag/Si(111)-(√3×√3)-R30°, and WO2/W(110).

STM images of Mn(III)-tetraphenyl porphyrin (main), Ni(II)-diphenyl porphyrin (left) and C60 (right).

NanoArt

In April 2014 I was chosen as the Nanosciences Fondation's NanoArt laureate for my "Nano-landscape" image. The nanoscopic world mirrors the macroscopic. Seen here is a valley and plateau on the surface of a silver crystal, imaged by Scanning Tunneling Microscope. The small hillocks are the height of a single atom and the "waves" in the sea are actually individual molecules which self-assemble into ordered structures. The study of such self-organisation is key for the future of electronics, which may be made up of circuits comprised of single molecules. Although this image is more than 1000 times smaller than the width of a hair, it could be mistaken for a rocky outcrop jutting into the sea.

Nano-landscape