Laser Research Institute
Welcome to Stellenbosch University

Selected Publications by the Laser Research Institute (since 2015)


Journal Articles

BROECKHOVEN C, DU PLESSIS A, HUI C. Functional trade-off between strength and thermal capacity of dermal armor: Insights from girdled lizards. Journal of the Mechanical Behavior of Biomedical Materials 2017; 74:189-194.

BROECKHOVEN C, DU PLESSIS A. Has snake fang evolution lost its bite? New insights from a structural mechanics viewpoint. Biology Letters 2017; 13(8):5 pages.

DU PLESSIS A, BROECKHOVEN C, GUELPA A, LE ROUX SG. Laboratory x-ray micro-computed tomography: A user guideline for biological samples. GigaScience 2017; 6(6):Article number gix027, 11 pages.

DU PLESSIS A, YADROITSAVA I, LE ROUX SG, YADROITSEV I, FIERES J, REINHART C, ROSSOUW P. Prediction of mechanical performance of Ti6Al4V cast alloy based on microCT-based load simulation. JOURNAL OF ALLOYS AND COMPOUNDS 2017; 724:267-274.

GEBRU A, BRYDEGAARD M, ROHWER EJ, NEETHLING PH. Probing insect backscatter cross-section and melanization using kHz optical remote detection system. Journal of Remote Sensing 2017; 1(1):016015-1.

GRINE FE, MAREAN CW, FAITH JT, BLACK W, MONGLE CS, TRINKAUS E, LE ROUX SG, DU PLESSIS A. Further human fossils from the Middle Stone Age deposits of Die Kelders Cave 1, Western Cape Province, South Africa. Journal of human evolution 2017; 109:70-78.

GUELPA A, MARINI F, DU PLESSIS A, SLABBERT R, MANLEY M. Verification of authenticity and fraud detection in South African honey using NIR spectroscopy. FOOD CONTROL 2017; 73:1388-1396.

HAM H, DU PLESSIS A, LE ROUX SG. Microcomputer tomography (microCT) as a tool in Pinus tree breeding: pilot studies. New Zealand Journal of Forestry 2017; 47(2):8 pages.

MEBWE PACHONG S, MULLER-NEDEBOCK KK. Active force maintains the stability of a contractile ring. EUROPEAN PHYSICAL JOURNAL E 2017; 40(91):13 pages.

Mulder, R., Mohammed, N., du Plessis, A. and le Roux, S.G., 2017. A pilot study investigating the presence of voids in bulk fill flowable composites. South African Dental Journal, 72(10), pp.462-465.

NDEBEKA WI, NEETHLING PH, ROHWER EG, STEENKAMP CM, BERGMANN J , STAFAST H. Interband and free charge carrier absorption in silicon at 800 nm: experiments and model calculations. Applied Physics B: Lasers and Optics 2017; 123(253):9 pages.

ROZENDAAL A, LE ROUX SG, DU PLESSIS A, PHILANDER C. Grade and product quality control by microCT scanning of the world class Namakwa Sands Tri-Zr placer deposit West Coast, South Africa: An orientation study. MINERALS ENGINEERING 2017; 116:152-162.

ROZENDAAL A, LE ROUX SG, DU PLESSIS A. Application of microCT scanning in the recovery of endo-skarn associated scheelite from the Rivera Deposit, South Africa. MINERALS ENGINEERING 2017; 117:16 Pages.

SCHOEMAN L, DU PLESSIS A, VERBOVEN P, NICOLAÏ BM, CANTRE B, MANLEY M. Effect of oven and forced convection continuous tumble (FCCT) roasting on the microstructure and dry milling properties of white maize. Innovative Food Science and Emerging Technologies 2017; 44:54-66.

SCHWOERER HPH, CHAPMAN HN, SIWICK BJ, MILLER RJD. Special issue on imaging the dynamic structure of matter. JOURNAL OF PHYSICS BATOMIC MOLECULAR AND OPTICAL PHYSICS 2017; 49:150201, 6 pages.

SULIALI N, BARICHOLO P, NEETHLING PH, ROHWER EG. Development of a Free Space, LED Illuminated Spectral-domain Optical Coherence Tomography Setup . JOURNAL OF PHYSICS D-APPLIED PHYSICS 2017; 11(5):176-181.

UHRICH PJ, CASTRIGNANO S, UYS H, KASTNER M. Noninvasive measurement of dynamic correlation functions. PHYSICAL REVIEW A 2017; 96:022127, 14 pages.

Yadroitsev, I., Krakhmalev, P., Yadroitsava, I. and Du Plessis, A., 2017. Qualification of Ti6Al4V ELI Alloy Produced by Laser Powder Bed Fusion for Biomedical Applications. JOM, pp.1-6.

Proceedings International conference proceedings: full length papers

A. de Bruyn, C. Steenkamp, E. G. Rohwer, and A. Du Plessis, "Temperature determination in a supersonic gas jet from self-absorption free excitation spectra of carbon monoxide," in Frontiers in Optics 2017, OSA Technical Digest (online) (Optical Society of America, 2017), paper FM2B.3. (Full paper was peer reviewed. Published in proceedings.)

Dzogbewu, T., Yadroitsev, I., Krakhmalev, P., Yadroitsava, I. and Du Plessis, A., 2017. Optimal process parameters for in-situ alloyed Ti15Mo structures by Direct Metal Laser Sintering. In SSF 2017-The 28th Annual International Solid Freeform Fabrication Symposium, Austin, August 7-9, 2017.



Journal Articles

BAARS H, KANITZ T, ENGELMANN R, ALTHAUSEN D, HEESE B, ROHWER EG, ET AL . An overview of the first decade of PollyNET: an emerging network of automated Raman-polarization lidars for continuous aerosol profiling. ATMOSPHERIC CHEMISTRY AND PHYSICS 2016; 16(8):5111-5137.

BRITTON JW, BOHNET JG, SAWYER BC, UYS H, BIERCUK MJ, BOLLINGER JJ. Vibration-induced field fluctuations in a superconducting magnet. Physical Review A. Atomic, Molecular, and Optical Physics 2016;93(6):062511,7.

Broeckhoven, C., Plessis, A., Roux, S. G., Mouton, P. L. F. N., & Hui, C. (2016). Beauty is more than skin deep: a non‐invasive protocol for in vivo anatomical study using micro‐CT. Methods in Ecology and Evolution. doi: 10.1111/2041-210X.12661

BRYDEGAARD M, MERDASA A, GEBRU AK, JAYAWEERA H, SVANBERG S. Realistic Instrumentation Platform for Active and Passive Optical Remote Sensing. A + U-ARCHITECTURE AND URBANISM 2016; 70(2):372-385.

CLARKE CE, MAJODINA TO, DU PLESSIS A, ANDREOLI MAG. The use of X-ray tomography in defining the spatial distribution of barite in the fluvially derived palaeosols of Vaalputs, Northern Cape Province, South Africa. GEODERMA 2016; 267:48-57.

DU PLESSIS A, LE ROUX SG, GUELPA A. Comparison of medical and industrial X-ray computed tomography for non-destructive testing. Case Studies in Nondestructive Testing and Evaluation 2016; 6:17-25.

DU PLESSIS A, LE ROUX SG, GUELPA A. The CT Scanner Facility at Stellenbosch University: An open access X-ray computed tomography laboratory. Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms 2016; 384:42-49.

DU PLESSIS A, OLAWUYI BJ, BOSHOFF WP, LE ROUX SG. Simple and fast porosity analysis of concrete using X-ray computed tomography. Materials and Structures/Materiaux et Constructions 2016; 49(1):553-562.

GREETHAM GM, DONALDSON PM, NATION C, SAZANOVICH IV, CLARK IP, PARKER AW, ET AL . A 100 kHz time-resolved multiple-probe femtosecond to second infrared absorption spectrometer. APPLIED SPECTROSCOPY 2016; 70(4):645-653.

GUELPA A, DU PLESSIS A, MANLEY M. A high-throughput X-ray micro-computed tomography (µCT) approach for measuring single kernel maize (Zea mays L.) volumes and densities. JOURNAL OF CEREAL SCIENCE 2016;69:321-328.

HAUPT KA, EICHBERGER M, ERASMUS N, ROHWER AB, DEMSAR J, ROSSNAGEL K, SCHWOERER HPH. Ultrafast Metamorphosis of a Complex Charge-Density Wave. PHYSICAL REVIEW LETTERS 2016; 116(1):016402-1-5.

HEIDT AM, SPANGENBERG D, BRUGMANN MH, ROHWER EG, FEURER T. Improved retrieval of complex supercontinuum pulses from XFROG traces using a ptychographic algorithm. OPTICS LETTERS 2016;41(21):4903-4906.

HEISEL P-C, NDEBEKA WI, NEETHLING PH, PAA W, ROHWER EG, STEENKAMP CM, STAFAST H. Free charge carrier absorption in silicon at 800 nm. Applied Physics B: Lasers and Optics 2016; 1:1.

HITHELL G, SHAW DJ, DONALDSON PM, GREETHAM GM, TOWRIE M, PARKER AW, ET AL . Long-range vibrational dynamics are directed by Watson-Crick base pairing in duplex DNA. JOURNAL OF PHYSICAL CHEMISTRY B 2016; 120:4009-4018.

KERNS JG, BUCKLEY K, CHURCHWELL J, PARKER AW, MATOUSEK P, GOODSHIP AE. Is the Collagen Primed for Mineralization in Specific Regions of the Turkey Tendon? An Investigation of the Protein-Mineral Interface Using Raman Spectroscopy. ANALYTICAL CHEMISTRY 2016; 88:1559-1563.

Krakhmalev, P., Fredriksson, G., Yadroitsava, I., Kazantseva, N., du Plessis, A., & Yadroitsev, I. (2016). Deformation behavior and microstructure of Ti6Al4V manufactured by SLM. Physics Procedia, 83, 778-788.

LINDGREN O, SEIFERT T, DU PLESSIS A. Moisture content measurements in wood using dual-energy CT scanning – a feasibility study. Wood Material Science and Engineering 2016; 11(5):312-317.

MATTHEWS T, DU PLESSIS A. Using X-ray computed tomography analysis tools to compare the skeletal element morphology of fossil and modern frog (Anura) species. PALAEONTOLOGIA ELECTRONICA 2016; 19:1-46.

MINDA I, AHMED ETM, SLEZIONA V, RICHTER C, BEU M, FALGENHAUER J, MIURA H, SCHLETTWEIN D, SCHWOERER HPH. Identification of different pathways of electron injection in dye-sensitised solar cells of electrodeposited ZnO using an indoline sensitiser. Physical Chemistry, Chemical Physics - PCCP 2016;18:8938-8944.

MOLETSANE MG, KRAKHMALEV P, KAZANTSEVA N, DU PLESSIS A, YADROITSAVA I, YADROITSEV I. Tensile properties and microstructure of direct metal laser-sintered Ti6Al4V. South African Journal of Industrial Engineering  2016; 27(3):110-121.

OLAOYE OO, ERASMUS N, HAUPT KA, SCHWOERER HPH. Femtosecond dynamics of decoupled superlattice zones in 4H b â€“TaSe 2 single crystals. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 2016; 49:064011-6.

J. Sastrawan, C. Jones, I. Akhalwaya, H. Uys, and M. J. Biercuk, Analytically exploiting noise correlations inside the feedback loop to improve locked-oscillator performance, PHYSICAL REVIEW E 94, 022204 (2016)

SCHERER KM, BISBY RH, BOTCHWAY SW, PARKER AW. New Approaches to Photodynamic Therapy from Types I, II and III to Type IV Using One or More Photons. Anti-Cancer Agents in Medicinal Chemistry 2016; 16:000-000.

SCHOEMAN L, DU PLESSIS A, MANLEY M. Non-destructive characterisation and quantification of the effect of conventional oven and forced convection continuous tumble (FCCT) roasting on the three-dimensional microstructure of whole wheat kernels using X-ray micro-computed tomography (µCT). JOURNAL OF FOOD ENGINEERING 2016; 187:1-13.

SCHOEMAN L, WILLIAMS PJ, DU PLESSIS A, MANLEY M. X-ray micro-computed tomography (µCT) for non-destructive characterisation of food microstructure. Trends in Food Science and Technology 2016; 47:10-24.

SIMONS M, POLLARD MR, HUGHES CD, WARD AD, VAN HOUTEN B, TOWRIE M, BOTCHWAY SW, PARKER AW, KAD NM. Directly interrogating single quantum dot labelled UvrA 2 molecules on DNA tightropes using an optically trapped nanoprobe. Scientific Reports 2015; 5:18486-1-9.

SPANGENBERG D, BRUGMANN MH, ROHWER EG, FEURER T. All-optical implementation of a time-domain ptychographic pulse reconstruction setup. APPLIED OPTICS 2016; 55(19):5008-5013.

SOWOIDNICH K, CHURCHWELL J, BUCKLEY K, KERNS JG, GOODSHIP AE, PARKER AW, MATOUSEK P. Assessment of photon migration for subsurface probing in selected types of bone using Spatially Offset Raman Spectroscopy Kay. Biophotonics: Photonic Solutions for Better Health Care V, Brussels, Belgium, SPIE 2016: 988719,10.

DU PLESSIS A, LE ROUX SG, BOOYSEN GJ, ELS J. Directionality of Cavities and Porosity Formation in Powder-Bed Laser Additive Manufacturing of Metal Components Investigated Using X-Ray Tomography. 3D printing and additive manufacturing 2016; 3(1):48-55.

DU PLESSIS A, LE ROUX SG, BOOYSEN GJ, ELS J. Quality Control of a Laser Additive Manufactured Medical Implant by X-Ray Tomography. 3D printing and additive manufacturing 2016; 3:175-182.

Du Plessis, A., le Roux, S. G., & Steyn, F. (2016). Quality Investigation of 3D Printer Filament Using Laboratory X-Ray Tomography. 3D Printing and Additive Manufacturing, 3(4), 262-267.



Journal Articles

AZARI A, MULLER-NEDEBOCK KK. Entropic competition in polymeric systems under geometrical confinement. EPL 2015; 110:68004-6.

BASSA H, GOYAL SK, CHOUDHARY SK, UYS H, DIOSI L, KONRAD T. Process tomography via sequential measurements on a single quantum system. Physical Review A 2015; 92(3):032102-6.

BOTHA L, DE CLERCQ LE, SMIT AM, BOTHA GN, RONANDER E, STRYDOM HJ. Quantum coherent control of the vibrational dynamics of a polyatomic molecule using adaptive feedback control of a femtosecond laser. Pramana-Journal of Physics 2014; 82(2):249-253.

BOTHA RC, KOEN WS, ESSER MJD, BOLLIG C, COMBRINCK WL, VON BERGMANN HM, STRAUSS HJ . High average power Q-switched 1314 nm two-crystal Nd:YLF laser. Optics Letters 2015; 40(4):495-497.

BURGER L, LITVIN I, NGCOBO S, FORBES A. Implementation of a spatial light modulator for intracavity beam shaping. Journal of Optics 2015; 17:015604-7.

BURHEIM OS, CRYMBLE GA, BOCK R, HUSSAIN N, PASUPATHI S, DU PLESSIS A, LE ROUX SG, SELAND F, SU H, POLLET BG. Thermal conductivity in the three layered regions of micro porous layer coated porous transport layers for the PEM fuel cell. International Journal of Hydrogen Energy 2015; 40:16775-16785.

DU PLESSIS A, ROSSOUW P. Investigation of Porosity Changes in Cast Ti6Al4V Rods After Hot Isostatic Pressing. Journal of Materials Engineering and Performance 2015; 24(8):3137-3141.

DU PLESSIS A, SLABBERT R, SWANEPOEL LC, ELS J, BOOYSEN GJ, IKRAM S, CORNELIUS I. Three-dimensional model of an ancient Egyptian falcon mummy skeleton. Rapid Prototyping Journal 2015; 21(4):368-372.

GUELPA A, DU PLESSIS A, KIDD M, MANLEY M. Non-destructive Estimation of Maize (Zea mays L.) Kernel Hardness by Means of an X-ray Micro-computed Tomography (?CT) Density Calibration. Food and Bioprocess Technology 2015; 8:1419-1429.

IKRAM S, SLABBERT R, CORNELIUS I, DU PLESSIS A, SWANEPOEL LC, WEBER H. Fatal force-feeding or Gluttonous Gagging? The death of Kestrel SACHM 2575. Journal of Archaeological Science 2015; 63:72-77.

LANDSCHOFF J, DU PLESSIS A, GRIFFITHS CL. A dataset describing brooding in three species of South African brittle stars, comprising seven high-resolution, micro X-ray computed tomography scans. GigaScience 2015; 4(52):1-4.

LE ROUX SG, DU PLESSIS A, ROZENDAAL A. The quantitative analysis of tungsten ore using X-ray microCT: Case study. Computers & Geosciences 2015; 85(Part A):75-80.

LITVIN I, BURGER L, FORBES A. Self-healing of Bessel-like beams with longitudinally dependent cone angles. Journal of Optics 2015; 17:105614-6.

PIETERSE CL, PAPKA P, PEROLD WJ. Polarization and corona discharge threshold field calculation of electrospraying point-to-plane geometries. Journal of Electrostatics 2015; 75:104-115.

ROHWER CM, MULLER-NEDEBOCK KK. Operator formalism for topology-conserving crossing dynamics in planar knot diagrams. Journal of Statistical Physics 2015; 159(1):120-157.

ROHWER EJ, MINDA I, TAUSCHER GE, RICHTER C, MIURA H, SCHLETTWEIN D, SCHWOERER HPH. Ultrafast Charge-Transfer Reactions of Indoline Dyes with Anchoring Alkyl Chains of Varying Length in Mesoporous ZnO Solar Cells. Chemphyschem 2015; 16:943-948.

SPANGENBERG D, NEETHLING PH, ROHWER EG, BRUGMANN MH, FEURER T. Time-domain ptychography. Physical Review A 2015; 91(2):021803-4.

SPANGENBERG D, ROHWER EG, BRUGMANN MH, FEURER T. Ptychographic ultrafast pulse reconstruction. Optics Letters 2015; 40(6):1002-1005.

TRICHILI A, MHLANGA T, ISMAIL Y, ROUX FS, MCLAREN MG, ZGHAL M, FORBES A. Detection of Bessel beams with digital axicons. Optics Express 2014; 22(14):17553-17560.

ZHANG Y, MCLAREN MG, ROUX FS, FORBES A. Simulating quantum state engineering in spontaneous parametric down-conversion using classical light. Optics Express 2014; 22(14):17039-17049.

ZONGO S, DHLAMINI MS, NEETHLING PH, YAO A, MAAZA M, ET AL . Synthesis, characterization and femtosecond nonlinear saturable absorption behavior of copper phthalocyanine nanocrystals doped-PMMA polymer thin films. Optical Materials 2015; 50:138-143.

AMBUSHE AA, DU PLESSIS A, MCCRINDLE RI. Laser-induced breakdown spectroscopy and inductively coupled plasma-mass spectrometry for determination of Cr in soils from Brits District, South Africa. Bulletin of the Chemical Society of Ethiopia 2015; 29(3): 357-366.

DU PLESSIS A, LE ROUX SG, ELS J, BOOYSEN GJ, BLAINE DC. Application of microCT to the non-destructive testing of an additive manufactured titanium component. Case studies in nondestructive testing and evaluation 2015; 4:1-7.

DU PLESSIS A, LE ROUX SG, STEYN FB. X-Ray Computed Tomography of Consumer-Grade 3D-Printed Parts. 3D printing and additive manufacturing 2015; 2(4):191-195.

DU PLESSIS A, LE ROUX SG, VAN ROOYEN H. 3D X-ray Inspection of a Radio Controlled Airplane Engine. Materials Science Forum 2015; 828-829:433-438.

DU PLESSIS A, ROSSOUW P. X-ray computed tomography of a titanium aerospace investment casting. Case studies in nondestructive testing and evaluation 2015; 3:21-26.

VAZIRI M, DU PLESSIS A, SANDBERG D, BERG S. Nano X-ray tomography analysis of the cell-wall density of welded beech joints. Wood Material Scinece and Engineering 2015; 10(4), 368-372.