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Publications

Patents Granted

  • S. A. Brown and J. Schmelzer, jr., 'Nanoscale Electronic Devices & Fabrication Methods' US patent US7,494,907 B2.

Selected Refereed Publications

  • Sara Salehitaleghani, Tobias Maerkl, Pawel J Kowalczyk, Maxime Le Ster, Xiaoxiong Wang, Guang Bian, Tai-Chang Chiang, and Simon A Brown, 'Edge States of α-Bismuthene Nanostructures', 2D Materials 10, 015020 (2023).

  • Qiangsheng Lu, Matthew Snyder, Kyle Y. Chen, Jacob Cook, Duy Tung Nguyen, P. V. Sreenivasa Reddy, Tay-Rong Chang, Pawel J. Kowalczyk, Simon A. Brown, Tai-Chang Chiang, Shengyuan A. Yang, and Guang Bian, Observation of Unpinned Two-Dimensional Dirac States in Antimony Single Layers', Nature Communications 13, 4603 (2022)

  • R. K. Daniels, J. B. Mallinson, Z. Heywood, P. Bones, M. Arnold, S. A. Brown, 'Reservoir Computing with 3D Nanowire Networks', Neural Networks 154, 122 (2022)

  • Zachary Heywood, Joshua Mallinson, Edoardo Galli, Susant Acharya, Saurabh Bose, Matthew Arnold, Philip Bones and Simon A. Brown, 'Self-organized nanoscale networks: are neuromorphic properties conserved in realistic device geometries?', Neuromorphic Computing and Engineering 2, 024009 (2022).

  • Niko Carstens, Blessing Adejube, Thomas Strunskus, Franz Faupel, Simon Brown and Alexander Vahl, 'Brain-like critical dynamics and long-range temporal correlations in percolating networks of silver nanoparticles and functionality preservation after integration of insulating matrix', Nanoscale Advances, DOI:10.1039/d2na00121g (2022).

  • Saurabh Bose, Josh Mallinson, Edoardo Galli, Susant Acharya, Chloe Minnai, Philip Bones, Simon Brown, 'Neuromorphic behaviour in discontinuous metal films', Nanoscale Horizons 7, 437 (2022).

  • Ryan K. Daniels and Simon A. Brown, 'Nanowire networks: how does small-world character evolve with dimensionality?', Nanoscale Horizons 6, 482 (2021).

  • Tobias Maerkl, Sara Salehitaleghani, Maxime Le Ster, Pawel J Kowalczyk, Xiaoxiong Wang, Peng Wang, Matthew Snyder, Guang Bian, Tai-Chang Chiang and Simon A Brown, 'Antimony Oxide Nanostructures in the Monolayer Limit: Self-assembly of van der Waals-bonded Molecular Building Blocks', Nanotechnology 32, 125701 (2021).

  • Matthew D. Pike, Saurabh Kumar Bose, Joshua Brian Mallinson, Susant Kumar Acharya, Shota Shirai, Edoardo Galli, Steven J. Weddell, Philip J. Bones, Matthew D. Arnold, and Simon Anthony Brown, 'Atomic scale dynamics drive brain-like avalanches in percolating nanostructured networks', Nano Letters 20, 3935 (2020).

  • J. Kowalczyk, S. A. Brown, T. Maerkl, Q. Lu, C-K. Chiu, Y. Liu, S. A. Yang, X. Wang, I. Zasada, F. Genuzio, T. O. Mentes, A. Locatelli, T.-C. Chiang, and G. Bian, 'Realisation of Symmetry Enforced Two-Dimensional Dirac Fermions in Nonsymmorphic α-Bismuthene', ACS Nano 14, 1888 (2020).

  • Shirai, S. K. Acharya, S. K. Bose, J. Mallinson, E. Galli, M. Pike, M. D. Arnold and S. A. Brown, 'Long-range temporal correlations in scale-free neuromorphic networks', Network Neuroscience 4, 432 (2020).

  • Le Ster, J. R. Chan, B. J. Ruck, S. A. Brown, and F. Natali, 'Removable capping layer for air-sensitive GdN', Nanotechnology 31, 275709 (2019).

  • B. Mallinson, S. Shirai, S. K. Acharya, S. K. Bose, E. Galli & S. A. Brown, 'Avalanches and criticality in self-organised nanoscale networks', Science Advances 5, eaaw8438 (2019).

  • Le Ster, T. Maerkl, and S. A. Brown, 'Simple Analytical Model for Moire Patterns', 2D Materials 7, 011005 (2019).

  • Märkl, P. J. Kowalczyk, M. Le Ster, I. V. Mahajan, H. Pirie, Z. Ahmed, G. Bian, X. Wang, T.-C. Chiang, and S. A. Brown, 'Engineering Multiple Topological Phases in Nanoscale Van der Waals Heterostructures: Realisation of a-Antimonene' 2D Materials 5, 011002 (2018).

  • Maxime Le Ster, Tobias Maerkl, Pawel J. Kowalczyk, and Simon A. Brown, 'Moire patterns in Van der Waals heterostructures', Physical Review B 99, 075422 (2019).

  • Chloé Minnai, Matteo Mirigliano, Simon Brown, Paolo Milani, 'The nanocoherer: an electrically and mechanically resettable memristor based on gold clusters assembled on paper', Nano Futures 2, 011002 (2018). https://doi.org/10.1088/2399-1984/aab4ee.

  • K. Bose, J. Mallinson, R. M. Gazoni and S. A. Brown, 'Stable self-assembled atomic-switch networks for neuromorphic applications', IEEE Trans Nano Devices 64, 5194 (2017).

  • Kowalczyk, O. Mahapatra, M. Le Ster, S. A. Brown G. Bian, X. Wang, T.-C. Chiang, 'A single atomic layer allotrope of bismuth with rectangular symmetry', Physical Review B 96, 205434 (2017).

  • Xiaoxiong Wang, Caizhi Xu, Huanzhi Hu, Peng Wang, Guang Bian, Weishi Tan, S.A. Brown, and Tai-Chang Chiang,  'Topological phase stability and transformation of bismuthene' European Physics Letters 119, 27002 (2017).

  • Chloé Minnai, Andrea Bellacicca, Simon Brown, Paolo Milani, 'Facile fabrication of complex networks of memristive devices', Scientific Reports 7: 7955 (2017). DOI:10.1038/s41598-017-08244-y.

  • Wang, G. Bian, C. Xu, P. Wang, H. Hu, W. Zhou, S. A. Brown, and T.-C. Chiang, 'Topological phases in double layers of bismuthene and antimonene', Nanotechnology 28, 395706 (2017).

  • Houben, S. Couet, M. Trekels, E. Menendez, M. Y. Hu, J. Y. Zhao, E. E. Alp, S. Roelants, B. Partoens, M. V. Milosevic, F. M. Peeters, D. Bessas, S. A. Brown , A. Vantomme, K. Temst, M. J. Van Bael, 'Lattice dynamics in Sn nano islands and cluster-assembled films', Phys. Rev. B 95, 155413 (2017).

  • Amol Nande, Shawn Fostner, Rodrigo Martinez Gazoni, Alex Smith, Jack Grigg, Margriet van Bael, Kristiaan Temst, and Simon A. Brown, 'Quantum Fluctuations in Percolating Superconductors: an Evolution with Effective Dimensionality', Nanotechnology 28, 165704 (2017).

  • Shawn Fostner and Simon A. Brown, 'Neuromorphic Behavior in Percolating Nanoparticle Films', Physical Review E 92, 052134 (2015). 

  • J. Kowalczyk, O. Mahapatra, D. Belic, S. A. Brown, G. Bian and T.-C. Chiang, 'Origin of the Moire pattern in thin Bi films deposited on HOPG', Phys. Rev. B 91, 045434 (2015).

  • Bian, X. Wang, T. Miller, T.-C. Chiang, P.J. Kowalczyk, O. Mahapatra, and S.A. Brown, 'First-Principles and Spectroscopic Studies of Bi(110) Films: Thickness-dependent Dirac modes and property oscillations', Phys. Rev. B 90, 195409 (2014).

  • Lee, H. Ma, P. A. Brooksby, S. A. Brown, Y. R. Leroux, P. Hapiot, A. J. Downard, 'Covalently-Anchored Carboxyphenyl Monolayer via Aryldiazonium Ion Grafting: a Well-Defined Reactive Tether Layer for On-Surface Chemistry', Langmuir 30, 7104 (2014).

  • Ma, L. Lee, P. A. Brooksby, S. A. Brown, Y. R. Leroux, P. Hapiot, A. J. Downard, 'Scanning Tunneling and Atomic Force Microscopy Evidence for Covalent and Non-Covalent Interactions between Aryl Films and Highly Ordered Pyrolytic Graphite', J. Phys. Chem. C 118, 5820 (2014).

  • Fostner, R. Brown, J. Carr, and S. A. Brown, 'Continuum Percolation with Tunneling', Phys. Rev. B 89, 075402 (2014).J.

  • Kowalczyk, O. Mahapatra, S.A. Brown, G. Bian and T.-C. Chiang, 'STM driven modification of bismuth nanostructures', Surface Science 621, 140 (2014).

  • Mahapatra, P. J. Kowalczyk and S. A. Brown, 'Growth and electronic properties of NaCl on HOPG', Surface Science 620, 45 (2014).

  • A. Sattar, S. Fostner, and S. A. Brown, 'Quantized conductance and switching in percolating devices', Phys. Rev. Lett. 111, 136808 (2013).

  • P. J. Kowalczyk, O. Mahapatra, S. A. Brown, G. Bian, X. Wang, and T.-C. Chiang, 'Electronic Size Effects in Three-Dimensional Nanostructures', Nano Letters 13, 43 (2013).

  • P. J. Kowalczyk, D. Belic, O. Mahapatra, S. A. Brown, E. S. Kadantsev, T. K. Woo, B. Ingham, and W. Kozlowski, 'Anisotropic oxidation of bismuth nanostructures: Evidence for a thin film allotrope of bismuth', Appl. Phys. Lett. 100, 151904 (2012).
  • P.J. Kowalczyk, D. Belic, O. Mahapatra, S.A. Brown, 'Grain boundaries between bismuth nanocrystals', Acta Materialia 60, 674 (2012).

  • D. Belic, R.L. Chantry, Z.Y. Li and S.A. Brown, 'Ag-Au nanoclusters: Structure and phase segregation', Applied Physics Letters 99, 171914 (2011).

  • M. S. Fairbanks, D. N. McCarthy, S. A. Scott, S. A. Brown and R. P. Taylor , 'Fractal electronic circuits: simulation and implementation', Nanotechnology 22, 365304 (2011).

  • P. Y. Convers, D. N. McCarthy, A. Sattar, F. Natali, S. C. Hendy, and S. A. Brown, 'An Electrical Signature of Nanoscale Coalescence', Phys. Rev. B. 82, 115409 (2010).

  • A. I. Ayesh, S. A. Brown, A. Awasthi, S. C. Hendy, P. Y. Convers, and K. Nichol, 'The Coefficient of Restitution for Bouncing Nanoparticles', Phys. Rev. B. 81, 195422 (2010).

  • D. N. McCarthy, D. Robertson, P. Kowalczyk and S. A. Brown, 'The Effects of Annealing and Growth Temperature on the Morphology of Bismuth Nanostructures on HOPG', Surface Science 252, 5563 (2010).

  • B. Ingham, S. C. Hendy, D. D. Fong, P. H. Fuoss, J. A. Eastman, A. Lassesson, K. C. Tee, P. Convers, S. A. Brown, M. P. Ryan, and M. F. Toney, 'Strain in metallic nanoparticles with oxide shells', J. Phys. D: Appl. Phys. 43, 075301 (2010).

  • Teck H. Lim, David McCarthy, Shaun C. Hendy, Simon A. Brown, Richard D. Tilley, 'Real-Time TEM and KMC Studies of the Coalescence of Decahedral Gold Nanoparticles', ACS Nano 3, 3809 (2009).

  • S. A. Brown, 'The New Deficit Model', Nature Nanotechnology 4, 609 (2009).

  • D N McCarthy and S A Brown, 'Coalescence Kinetics of Atomic Clusters', Phys. Rev. B 80, 064107 (2009).

  • E. Boyd and S. A. Brown, 'Size dependence of SnO2 atomic cluster nanowire Field Effect Transistors', Nanotechnology 20, 425201 (2009).

  • B. Ingham, M. F. Toney, S. C. Hendy, T. Cox, D. D. Fong, J. A. Eastman, P. H. Fuoss, K. J. Stevens, A. Lassesson, S. A. Brown, and M. P. Ryan, 'Particle size effect of hydrogen-induced lattice expansion of palladium nanoclusters', Phys. Rev B. 78, 245408 (2008).

  • A. Lassesson, S. A. Brown, J. van Lith, and M. Schulze, 'Electrical characterization of gold island films: A route to control of nanoparticle deposition' Appl. Phys. Lett. 93, 203111 (2008).

  • A. Lassesson, M. Schulze, J. van Lith, S. A. Brown, 'Tin oxide nanocluster hydrogen and ammonia sensors' Nanotechnology 19, 015502 (2008).

  • J. van Lith, A. Lassesson, S. A. Brown, M. Schulze, J. G. Partridge, A. Ayesh, '2D tunneling based hydrogen sensors', Applied Physics Letters 91, 181910 (2007).

  • K. C. Tee, A. Lassesson, J. van Lith, S. A. Brown, J. G. Partridge, M. Schulze, R.J. Blaikie, 'Selective filling and sintering of copper nanoclusters for interconnect technology', IEEE Trans. Nano. 6, 556 (2007).

  • R. Reichel, J. G. Partridge, F. Natali, T. Matthewson, S. A. Brown, A. Lassesson, D. M. A. Mackenzie, A. Ayesh, K. C. Tee, A. Awasthi and S. C. Hendy, 'From the adhesion of atomic clusters to the fabrication of nanodevices', Applied Physics Letters 89, 213105 (2006).

  • A. Awasthi, S. C. Hendy, P. Zoontjens, and S. A. Brown, 'Re-entrant Adhesion Behaviour in Nanocluster Deposition', Phys. Rev. Lett 97, 186103 (2006).

  • J. G. Partridge, D. M. A. Mackenzie, R. Reichel and S. A. Brown, 'Electrically conducting Bi cluster-assembled wires formed using SiN nanostencils' Microelectronic Engineering 83, 1460-1463 (2006).

  • A. D. F. Dunbar, J. Partridge, M. Schulze and S. A. Brown, 'Morphological differences between Bi, Ag and Sb nano-particles and how they affect the percolation of current through nano-particle networks', Eur. Phys. J. D. 39, 415 (2006).

  • J. G. Partridge, R. Reichel, A. Ayesh, D. M. A. Mackenzie and S. A. Brown, 'Nanotechnology Through Self-Assembly of Clusters'. Physica Status Solidi-A 203, 1217 (2006).

  • S. A. Scott and S. A. Brown, '3-D Growth characteristics of Antimony Aggregates on Graphite', Eur. Phys. J. D 39, 433 (2006).

  • S. A. Scott, M. V. Kral and S. A. Brown, 'Bi on Graphite: Morphology and Growth Characteristics of Star Shaped Dendrites', Phys. Rev. B 73, 205424 (2006).

  • S. A. Scott, M. V. Kral and S. A. Brown, 'Self-assembly of oriented Bi nanorods at highly ordered pyrolitic graphite step-edges', Phys. Rev. B 72, 205423 (2005).

  • S. A. Scott, M. V. Kral and S. A. Brown, 'Growth of nanorods and mesoscale stars prior to an orientation transition in bismuth thin films', Applied Surface Science 252, 5563 (2006).

  • S. A. Scott, M. V. Kral and S. A. Brown 'A crystallographic orientation transition and early stage growth characteristics of thin bismuth films on graphite', Surf. Sci. 587, 175 (2005).

  • K.J. Stevens, K.S. Cheong, D.M. Knowles, N.J. Laycock, A. Ayesh, J. Partridge, S.A. Brown and S.C. Hendy, 'Electron microscopy of Bismuth building blocks for self-assembled nanowires', Current Applied Physics 6, 453 (2006).

  • M. Kaufmann, A Wurl, J. G. Partridge and S. A. Brown, ' Structure of Unsupported Antimony Nanoclusters' , presented at the 12th International Symposium on Small Particles and Inorganic Clusters ISSPIC-12, Nanjing, China, September (2004). Eur. Phys. J. D 34, 29 (2005).

  • J. G. Partridge, S. A. Brown, C. Seigert, R. Neilsen, A. D. F . Dunbar and R. J. Blaikie, 'Templated cluster assembly for production of metallic nanowires in passivated silicon V-grooves'. Microelectronic Engineering 73-74, 583 (2004). 

  • J. G. Partridge, S. A. Brown, A. D. F. Dunbar, M. Kaufmann, S. Scott, M. Schulze, R. Reichel, C. Seigert and R. Blaikie, 'Template assembled antimony cluster mesowires and nanowires', Nanotechnology 15, 1382 (2004). 

  • J. Partridge, S. Scott, A. Dunbar, M. Schulze, S. A. Brown, A. Wurl, and R. Blaikie, 'Formation of electrically conducting mesoscale wires through self-assembly of atomic clusters'. IEEE Transactions on Nanotechnology 3, 61 (2004). 

  • B D Hall, M Hyslop, A Wurl, and S A Brown, 'Electron Diffraction From Atomic Cluster Beams', in 'Fundamentals of Gas-Phase Nanotechnology ', Eds L Kish, C G Granqvist, W Marlow, and R W Siegel, Kluwers Academic Publishing, 2004.

  • S. Hendy, S. A. Brown and M. Hyslop, 'On the coalescence of nanoscale metal clusters', Phys. Rev. B. (Rapid Communications) 68, 241403(R) (2003).

  • A. D. F. Dunbar, J. Partridge, M. Schulze and S. A. Brown, 'Measurement of the conductivity exponent in random percolating networks of nanoscale bismuth clusters', presented at The 2004 International Conference on MEMS, NANO, and Smart Systems (ICMENS), Banff, Alberta (2003). Proceedings of ICMENS conference, pp. 350-356 (2003).

  • F. Khan, S. A. Brown, A. Liu, S. Gourley, V. Christie, O. Dickie, R. J. Reeves, 'Photoconductivity Spectra From N-Doped GaN: Evidence For Two Distinct Types Of Donors', Solid State Electronics 48, 373 (2003).

  • M. Schulze, S. Gourley, S. A. Brown, A. Dunbar, J. Partridge, R. J. Blaikie, 'Electrical Measurements of Nanoscale Bismuth Cluster Films'. Eur. Phys. J. D. 24, 291 (2003).

  • J. Schmelzer jr, S. A. Brown, A. Wurl, M. Hyslop, and R. J. Blaikie, 'Finite-Size Effects in the Conductivity of Cluster Assembled Nanostructures', Phys. Rev. Lett. 88, 226802 (2002). 

  • 'A really, really big business opportunity', by Simon Brown, NZ business magazine, May 2002, by permisson of www.profile.co.nz.
  • R Cheung, R J Reeves and S A Brown, 'Process Induced Defects And Optical Memory In GaN' in Defects and Diffusion in Ceramics - Annual Retrospective 2000, Ed. D Fisher, Scitec Publications, Switzerland. Defect and Diffusion Forum 186-187, 61 (2000).

  • S. A. Brown, M. M. Alkaisi, A. Bittar, R. J. Blaikie, S. M. Durbin, A. Engel, S. Gourley, B. D. Hall, S. Hendy, M. Hyslop, F. Khan, U. Lanke, A. Liu, A Markwitz, S. McNab, R. J. Reeves, B. Rong, J. Schmelzer Jr, M. Schulze, H. J. Trodahl, A. Wurl , 'Physics and Fabrication of Nanostructured Materials and Devices'. 
    [This is a summary of ongoing research across the extended group, including NEST group members in Christchurch and other researchers around the country. It is a precis of an Invited Overview lecture to be presented by Simon Brown at the 10th National Physics Conference PHYSIKOS2001 and 'A Celebration of New Zealand Physics' (NZIP2001), Wellington, New Zealand. 4-6 July 2001.]

  • S. A. Brown, R. J. Reeves, C. S. Haase, R. Cheung, C. Kirchner and M. Kamp 'Reactive Ion Etched Gallium Nitride: Metastable Defects And Yellow Luminescence'. Applied Physics Letters 75, 3285 (1999).

  • R. Cheung, S. Withanage, R. J. Reeves, S. A. Brown, I. Ben-Yaacov, C. Kirchner and M. Kamp, 'Reactive ion etch-induced effects on the near-band-edge luminescence in GaN', Applied Physics Letters 74, 3185 (1999). 

  • R. Cheung, R. J. Reeves, S. A. Brown, S. Withanage, E. Van der Drift, and M. Kamp, 'High Resolution Reactive Ion Etching of GaN and Etch Induced Effects', Journal of Vacuum Science and Technology B 17, 2759 (1999). 

  • S A Brown and L D Macks, 'Novel magnetic field-induced bistability in resonant tunneling', Physical Review B (Rapid Communications) 58, 1758 (1998).

  • S A Brown, J F Young, Z Wasilewski and P T Coleridge, 'Fermi Edge Singularities in Photoluminescence from Modulation Doped GaAs Quantum Wells', Physical Review B 56, 3937 (1997).

  • B J Ruck, J C Abele, H J Trodahl, S A Brown, and P Lynam, 'Vortex Dynamics and Instabilities in Layered and Homogeneous Ta/Ge Superconductors', Physical Review Letters 78, 2278 (1997).

  • S A Brown, L D Macks, T A Fisher and M Emeny, 'Inter-Landau Level Transitions Near The Threshold Of 2D – 2D Tunneling, Physical Review B 56, 1967 (1997).

  • S A Brown, J F Young, J A Brum, P Hawrylak, and Z Wasilewski, 'Evolution of the Interband Absorption Threshold with the Density of a Two Dimensional Electron Gas', Physical Review B (Rapid Communications) 54, 11082 (1996).

  • L D Macks, S A Brown, R G Clark, R P Starrett, M A Reed, M R Deshpande, C J L Fernando, and W R Frensley, 'Resonant Tunneling in Double Quantum Well, Triple Barrier Heterostructures', Physical Review B 54, 4857 (1996).

  • E M Goldys, S A Brown, R B Dunford, A G Davies, R Newbury, R G Clark, P E Simmonds, J J Harris and C T Foxon. 'Magneto-Optical Probe of Two-Dimensional Electron Liquid and Solid Phases', Phys. Rev. B (Rapid Communications) 46, 7957 (1992).