Associate Professor Heiko Timmers

Research team leader
+61 2 6268 8768

LOCATION

Room G20 PEMS South (Bldg 26) School of Physical, Environmental and Mathematical Sciences, UNSW Canberra, Australian Defence Force Academy, PO Box 7916, Canberra BC ACT 2610, AUSTRALIA

  • ABOUT
  • PUBLICATIONS
PhD ANU (Australia)
Dipl.-Phys. LMU München (Germany)
Vordipl. (Phys.) WWU Münster (Germany)
 

Email: H.Timmers@unsw.edu.au

Research Topics:

  • Materials Science
  • Condensed Matter Physics
  • Soft X-ray Characterisation
  • Ion Beam Analysis
  • Nuclear Techniques of Analysis
  • Radioisotope tracing
  • Nuclear Physics
  • Tribology

Scholarships of AUD$35,000 per annum are available for PhD-students, who have achieved H1/High Distinction in their Australian undergraduate program or in an overseas equivalent or who have completed a Masters by Research degree. If you are interested in working with me, contact me at H.Timmers@unsw.edu.au

Book Chapters

Whitlow HJ; Timmers H, 2004, 'Charge exchange and electron stripping', in Hellborg R (ed.), Electrostatic Accelerators, edn. Original, Springer Publishing Company, Berlin Heidelberg, pp. 181 - 186

Journal articles

Timmers H, 2018, 'X-ray absorption fine structure of carboxyl and other adventitious moieties attached to copper-supported graphene', Carbon, vol. 141, pp. 457 - 466, http://dx.doi.org/10.1016/J.CARBON.2018.09.086

Jansing C; Wahab H; Timmers H; Gaupp A; Mertins HC, 2018, 'Soft X-ray refractive index by reconciling total electron yield with specular reflection: experimental determination of the optical constants of graphite', Journal of Synchrotron Radiation, vol. 25, pp. 1433 - 1443, http://dx.doi.org/10.1107/S1600577518010408

Mertins HC; Jansing C; Krivenkov M; Varykhalov A; Rader O; Wahab H; Timmers H; Gaupp A; Sokolov A; Tesch M; Oppeneer PM, 2018, 'Giant magneto-optical Faraday effect of graphene on Co in the soft x-ray range', Physical Review B, vol. 98, http://dx.doi.org/10.1103/PhysRevB.98.064408

Wahab H; Jansing C; Mertins HC; Kim JH; Choi SH; Gaupp A; Timmers H, 2018, 'The identification and characterisation of carbonaceous interface layers of graphene using polarisation-dependent X-ray reflectometry', Carbon, vol. 137, pp. 252 - 265, http://dx.doi.org/10.1016/j.carbon.2018.05.021

Wahab H; Haverkamp R; Kim JH; Cadogan JM; Mertins H; Choi SH; Timmers H, 2016, 'The structural response of graphene on copper to surface- and interfacial-oxygen', Carbon, vol. 110, pp. 414 - 425, http://dx.doi.org/10.1016/j.carbon.2016.09.028

Jansing C; Mertins HC; Gaupp A; Sokolov A; Gilbert MC; Abdul Wahab H; Timmers H, 2016, 'X-ray natural linear dichroism of graphitic materials across the carbon K-edge: Correction for perturbing high-order harmonics', Journal of Physics: Conference Series, vol. 712, http://dx.doi.org/10.1088/1742-6596/712/1/012031

Jansing C; Mertins HC; Gilbert M; Abdul Wahab H; Timmers H; Choi SH; Gaupp A; Krivenkov M; Varykhalov A; Rader O; Legut D; Oppeneer PM, 2016, 'X-ray natural birefringence in reflection from graphene', Physical Review B - Condensed Matter and Materials Physics, vol. 94, http://dx.doi.org/10.1103/PhysRevB.94.045422

Liu Y; Song S; Timmers H, 2016, 'Correlation of polymer wear-debris generation between microscratching and macroscopic wear', Tribology International, vol. 93, pp. 202 - 213, http://dx.doi.org/10.1016/j.triboint.2015.09.010

Abdul Wahab H; Xu G; Jansing C; Gilbert M; Tesch MF; Jin J; Mertins H-C; Timmers H, 2015, 'Signatures of different carbon bonds in graphene oxide from soft x-ray reflectometry', X-Ray Spectrometry, vol. 44, pp. n/a - n/a, http://dx.doi.org/10.1002/xrs.2653

Hutchison WD; Stuchbery AE; Timmers H, 2015, '5th joint international conference on hyperfine interactions and symposium on nuclear quadrupole interactions (HFI/NQI 2014)', Hyperfine Interactions, vol. 230, pp. 1 - 3, http://dx.doi.org/10.1007/s10751-015-1146-8

Abiona AA; Kemp W; Timmers H; Bharuth-Ram K, 2015, 'Palladium-defect complexes in diamond and silicon carbide', Hyperfine Interactions, vol. 230, pp. 115 - 122, http://dx.doi.org/10.1007/s10751-014-1099-3

Abiona AA; Timmers H, 2015, 'First-principles study of the lattice integration of palladium defects in doped germanium and silicon', Materials Science in Semiconductor Processing, vol. 34, pp. 99 - 103, http://dx.doi.org/10.1016/j.mssp.2015.01.043

Abiona AA; Kemp W; Timmers H, 2015, 'TDPAC and first-principles study of electronic and structural properties of a Pd-vacancy complex in undoped germanium', Current Applied Physics, vol. 15, pp. 319 - 325, http://dx.doi.org/10.1016/j.cap.2015.01.005

Abiona AA; Kemp W ; Timmers H, 2014, 'Pd-Vacancy Complex in Ge: TDPAC and Ab initio Study', AIP Conference Proceedings, http://dx.doi.org/10.1063/1.4865614

Liu YY; Timmers H, 2013, 'Micro-scratching of polyethylene terephthalate: Mechanisms of wear debris generation', EUROPEAN POLYMER JOURNAL

Timmers H; liu Y, 2013, 'Micro-scratching of polyethylene terephthalate: Mechanisms of wear debris generation', European Polymer Journal, vol. 49, pp. 1984 - 1993, http://dx.doi.org/10.1016/j.eurpolymj.2013.04.011

Liu Y; Warner J; Gladkis L; Scarvell J; Smith P; Timmers H, 2013, 'Microscratching Characterization of the Wear-in of UHMW Polyethylene in Prostheses', Tribology Letters, vol. 49, pp. 439 - 450, http://dx.doi.org/10.1007/s11249-012-0087-5

Kemp W; Abiona A; Kessler P; Timmers H, 2012, 'Electric quadrupole interaction of 100Rh in antimony, hafnium and rhenium', Hyperfine Interactions, Vol. 219, vol. 221, pp. 1 - 5, http://dx.doi.org/10.1007/s10751-012-0735-z

Abiona A; Kemp W; Timmers H, 2012, 'Palladium-vacancy pairs in p-type and n-type germanium', Hyperfine Interactions, Vol. 219, vol. 221, pp. 1 - 8, http://dx.doi.org/10.1007/s10751-012-0667-7

Warner J; Gladkis L; Smith PN; Scarvell J; Timmers H, 2012, 'Demonstration of a new technique using radioisotope tracers to measure the backside wear rate on tibial inserts', Tribology Letters, vol. 46, pp. 139 - 145, http://dx.doi.org/10.1007/s11249-012-9933-8

Gladkis L; Timmers H; Scarvell J; Smith P, 2011, 'Detailed three-dimensional size and shape characterisation of UHMWPE wear debris', Wear, vol. 270, pp. 455 - 463, http://dx.doi.org/10.1016/j.wear.2010.12.005

Pal N; Quah B; Smith P; Gladkis L; Timmers H; Li RW, 2011, 'Nano-osteoimmunology as an important consideration in the design of future implants', ACTA Biomaterialia, vol. 7, pp. 2926 - 2934, http://dx.doi.org/10.1016/j.actbio.2011.04.011

Warner JA; Smith PN; Scarvell JM; Gladkis L; Timmers H, 2011, 'Recoil-implantation of multiple radioisotopes towards wear rate measurements and particle tracing in rosthetic joints', AIP Conference Proceedings, vol. 1336, pp. 655 - 659, http://dx.doi.org/10.1063/1.3586183

Warner J; Gladkis L; Timmers H, 2011, 'A new radioisotope tracing method of UHMWPE wear particle dispersion using 97Ru', Journal of The Mechanical Behavior of Biomedical Materials, vol. 4, pp. 776 - 784

Timmers H; Gladkis L; Warner J; Byrne AP; Del grosso MF; Arbeitman CR; Garcia-Bermudez G; Geruschke T; Vianden R, 2010, 'Polymer tribology by combining ion-implantation and radionuclide tracing', Nuclear Instruments and Methods in Physics Research Section B - Beam Interactions With Materials and Atoms, vol. 268, pp. 2119 - 2123, http://dx.doi.org/10.1016/j.nimb.2010.02.019

Kessler P; Geruschke T; Timmers H; Muller K; Byrne AP; Vianden R, 2010, 'Search for ferromagnetic ordering in Pd doped wide band gap semiconductors GaN and ZnO', Hyperfine Interactions, vol. 197, pp. 155 - 158, http://dx.doi.org/10.1007/s10751-010-0189-0

Timmers H; Kemp W; Byrne AP; Ridgway MC; Vianden R; Kessler P; Steffens M, 2010, 'Evidence of palladium-defect pairing in intrinsic germanium', Hyperfine Interactions, vol. 197, pp. 159 - 165, http://dx.doi.org/10.1007/s10751-010-0206-3

Warner J; Gladkis L; Timmers H, 2010, 'A new radioisotope tracing method of UHMWPE wear particle dispersion using 97Ru', Journal of The Mechanical Behavior of Biomedical Materials, vol. 4, pp. 776 - 784, http://dx.doi.org/10.1016/j.jmbbm.2010.09.001

Warner J; Gladkis L; Geruschke T; Vianden R; Scarvell J; Smith P; Zeitz W-D; Timmers H, 2010, 'Tracing wear debris pathways via ion-implanted indium-111', Wear, vol. 268, pp. 1257 - 1265, http://dx.doi.org/10.1016/j.wear.2010.01.021

Amos KJ; Croke JC; Timmers H; Owens PC; Thompson C, 2009, 'The application of caesium-137 measurements to investigate floodplain deposition in a large semi-arid catchment in Queensland, Australia: a low-fallout environment', Earth Surface Processes and Landforms, vol. 34, pp. 515 - 529, http://dx.doi.org/10.1002/esp.1749

Zeitz W; Dogra R; Byrne AP; Shrestha SK; Edge AV; Timmers H, 2008, 'Magnetism of isolated cadmium atoms in vacancy-associated sites in nickel', Physical Review - Section B - Condensed Matter, vol. 78, pp. 1 - 7, http://dx.doi.org/10.1103/PhysRevB.78.014406

Butcher KS; Fernandes AJ; Chen PP; Wintrebert-Fouquet M; Timmers H; Shrestha SK; Hirshy H; Perks R; Usher BF, 2007, 'The nature of nitrogen related point defects in common forms of InN', Journal of Applied Physics, vol. 101, pp. 1 - 11, http://dx.doi.org/10.1063/1.2736654

Gladkis LG; Haberska L; Scarvell J; Smith P; Timmers H, 2007, 'Radioisotope tracing of knee implant wear', Journal of the Australian Ceramic Society, vol. 43, pp. 175 - 178

Timmers H; Butcher KS; Shrestha SK; Chen PP; Wintrebert-Fouquet M; Dogra R, 2006, 'Compositional and structural characterization of indium nitride using swift ions', Journal of Crystal Growth, vol. 288, pp. 236 - 240, http://dx.doi.org/10.1016/j.jcrysgro.2005.12.004

Chen PP; Butcher KS; Wintrebert-Fouquet M; Wuhrer R; Phillips MR; Prince KE; Timmers H; Shrestha SK; Usher BF, 2006, 'Apparent band-gap shift in InN films grown by remote-plasma-enhanced CVD', Journal of Crystal Growth, vol. 288, pp. 241 - 246, http://dx.doi.org/10.1016/j.jcrysgro.2005.12.005

Shrestha SK; Timmers H, 2006, 'The optimum heavy ion beam for the compositional analysis of indium nitride films', Nuclear Instruments and Methods in Physics Research Section B - Beam Interactions With Materials and Atoms, vol. 249, pp. 257 - 260, http://dx.doi.org/10.1016/j.nimb.2006.04.010

Weijers-Dall TDM; Timmers H; Stenström K; Persson P; Pergjegjaj A; Wang X; Graczyk M; Osipowicz T; Ren MQ; O'Connor DJ; Whitlow HJ, 2006, 'Measurements of the stopping forces for heavy ions in Ge, Ag and Au using novel 'polka-dot' detectors', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 251, pp. 352 - 360, http://dx.doi.org/10.1016/j.nimb.2006.07.019

Weijers-Dall T; Timmers H; Elliman RG, 2005, 'Origins of the residual pulse height deficit in propane-filled gas ionization detectors', Nuclear Instruments and Methods in Physics Research Section A - Accelerators Spectrometers Detectors and Associated Equipment, vol. 550, pp. 139 - 144, http://dx.doi.org/10.1016/j.nima.2005.04.078

Shrestha SK; Timmers H; Butcher KS; Wintrebert-Fouquet M; Chen PP, 2005, 'Nitrogen depletion of indium nitride films during Elastic Recoil Detection analysis', Nuclear Instruments and Methods in Physics Research Section B - Beam Interactions With Materials and Atoms, vol. 234, pp. 291 - 307, http://dx.doi.org/10.1016/j.nimb.2005.01.022

Dogra R; Shrestha SK; Byrne AP; Ridgway MC; Edge AV; Vianden R; Penner J; Timmers H, 2005, 'Evidence for atomic scale disorder in indium nitride from perturbed angular correlation spectroscopy', Journal of Physics: Condensed Matter, vol. 17, pp. 6037 - 6046, http://dx.doi.org/10.1088/0953-8984/17/38/009

Scott K; Butcher A; Wintrebert-Fouquet M; Chen PP; Prince KE; Timmers H; Shrestha SK; Shubina TV; Ivanov SV; Wuhrer R; Phillips MR; Monemar B, 2005, 'Non-stoichiometry and non-homogeneity in InN', Physica Status Solidi C - Conferences and Critical Reviews, vol. 2, pp. 2263 - 2266, http://dx.doi.org/10.1002/pssc.200461387

Butcher KS; Afifuddin ; Tansley TL; Brack N; Pigram PJ; Timmers H; Prince K; Elliman RG, 2004, 'Gallium and oxygen accumulations on gallium nitride surfaces followingargon ion milling in ultra-high vacuum conditions', Applied Surface Science, vol. 230, pp. 18 - 23, http://dx.doi.org/10.1016/j.apsusc.2004.02.029

Elliman RG; Timmers H; Weijers TDM, 2004, 'Hydrogen detection with a gas ionization elastic recoil detector', Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, vol. 219-220, pp. 410 - 414, http://dx.doi.org/10.1016/j.nimb.2004.01.092

Timmers H; Stenstrom K; Graczyk M; Whitlow H, 2004, 'Energy loss measurements for mass-14 ions using a patterned stoppingmedium on a PIN diode', Nuclear Instruments and Methods in Physics Research Section B - Beam Interactions With Materials and Atoms, vol. 219-220, pp. 263 - 267, http://dx.doi.org/10.1016/j.nimb.2004.01.065

Weijers TD; Elliman RG; Timmers H, 2004, 'Heavy ion elastic recoil detection analysis of silicon-rich silica films', Nuclear Instruments and Methods in Physics Research Section B - Beam Interactions With Materials and Atoms, vol. 219-220, pp. 680 - 685, http://dx.doi.org/10.1016/j.nimb.2004.01.142

Kucheyev S; Timmers H; Zou J; Williams JS; Jagadish C; Li G, 2004, 'Lattice damage produced in GaN by swift heavy ions', Journal of Applied Physics, vol. 95, pp. 5360 - 5365, http://dx.doi.org/10.1063/1.1703826

Li M; O Connor D; Timmers H, 2004, 'A study of the charge state approach to the stopping power of MeV B, Nand O ions in carbone', Nuclear Instruments and Methods in Physics Research Section B - Beam Interactions With Materials and Atoms, vol. 222, pp. 11 - 18, http://dx.doi.org/10.1016/j.nimb.2003.12.090

Shrestha SK; Timmers H; Butcher KS; Wintrebert-Fouquet T, 2004, 'Accurate stoichiometric analysis of polycrystalline indium nitridefilms with elastic recoil detection', Current Applied Physics, vol. 4, pp. 237 - 240, http://dx.doi.org/10.1016/j.cap.2003.11.018

Shrestha SK; Butcher KS; Wintrebert-Fouquet M; Timmers H, 2004, 'Reliable ERD analysis of group-III nitrides despite severe nitrogen depletion', Nuclear Instruments and Methods in Physics Research Section B - Beam Interactions With Materials and Atoms, vol. 219-220, pp. 686 - 692, http://dx.doi.org/10.1016/j.nimb.2004.01.143

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