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Dr Andrei Sapelkin

Andrei Sapelkin

Senior Lecturer | PhD Tutor

School of Physics and Astronomy
G O Jones 126, Mile End
+44 (0)20 7882 3414

www.qmul.ac.uk/spa/people/academics/profiles/asapelkin.html

Research

X-ray absorption spectroscopy, Nanomaterials, Carbon nanotubes, quantum electronics

Research Interests

Andrei V. Sapelkin has research interests in semiconductor quantum dots (SQDs) preparation, characterisation and their use in bio-applications. Specifically, he has been looking into effects of various synthesis routes on light emission in nanostructures. Semiconductor nano-crystals have captivated the imagination of scientists and engineers since their technological potential became evident over two decades ago. This is especially true for semiconductor quantum dots, where quantum size effects and carrier confinement allow unprecedented control over optical and electronic properties. Leading the way in this field, in both theoretical understanding and demonstrated applications, is indisputably the cadmium-based II-VI quantum dots discovered by Brus in 1980s. However, concerns regarding their toxicity are yet to be resolved calling for the advancement of alternative nontoxic materials, including the group IV (Si, Ge) semiconductor nano-crystals. Our interest is in bio-application of quantum dots and to this end we adopted synthesis routes that yield Ge QDs in form of suspension (by etching and now by colloidal synthesis, Fig. 1). These nano-particles show low toxicity and photoluminescence in a visible range (500-700 nm) and hence could potentially be suitable for bio-application. Our synthesis methods provide a degree of control over surface termination and also over the light emission properties.

We work together with Dr. A. Wheeler, Blizard Institute, QMUL to assess the possibility of using Ge QDs for super-resolution imaging of live cells. This work requires a combination of in-house characterisation techniques (e.g.. Raman, Photoluminescence, Fluorescence Imaging) and structural methods (e.g. XAS) available at the large scale facilities such as Diamond Light Source. Furthermore, understanding of relationship between atomic, electronic structure and optical properties requires firm theoretical support and we work together with Dr. K. Trachenko, SPA, QMUL.

Another long standing interest is effects of high hydrostatic pressure on structural and optical properties of novel materials such as topologically disordered solids and nanostructures. This led to his interest in the development of experimental techniques for local structural characterisation of materials under pressure using synchrotron radiation. He investigated in details behavior of diamond spikes in EXAFS spectra collected under pressure in DACs, demonstrating the possibility of data collection in much wider range of energies than thought was possible before. He was involved in initiation and preparation of the case for I20-X-ray spectroscopy (XAS-3) beamline at new UK synchrotron radiation source - Diamond. He then served as a member of the working group for XAS3. The beamline is now approved for funding and will be operational by 2009.

Publications of specific relevance to Materials Research

Publications

2021

  • Mistryukova LA, Kryuchkov NP, Mantsevich VN, Sapelkin AV and Yurchenko SO (2021). Interpolation method for crystals with many-body interactions. Physical Review B  vol. 104, (5) 10.1103/physrevb.104.054108
  • Demina PA, Sindeeva OA, Abramova AM, Prikhozhdenko ES, Verkhovskii RA, Lengert EV, Sapelkin AV, Goryacheva IY and Sukhorukov GB (2021). Fluorescent Convertible Capsule Coding Systems for Individual Cell Labeling and Tracking. Acs Applied Materials and Interfaces  vol. 13, (17) 19701-19709. 10.1021/acsami.1c02767
  • Tsyupka DV, Mordovina EA, Sindeeva OA, Sapelkin AV, Sukhorukov GB and Goryacheva IY (2021). High-fluorescent product of folic acid photodegradation: Optical properties and cell effect. Elsevier  Journal of Photochemistry and Photobiology a: Chemistry  vol. 407, 10.1016/j.jphotochem.2020.113045

2020

  • Abramova AM, Kokorina AA, Sindeeva OA, Jolibois F, Puech P, Sukhorukov GB, Goryacheva IY and Sapelkin AV (2020). Molecular nature of breakdown of the folic acid under hydrothermal treatment: a combined experimental and DFT study. Scientific Reports  vol. 10, (1) 10.1038/s41598-020-76311-y
  • Liu Y, Tan L, Cibin G, Gianolio D, Han S, Yu K, Dove MT and Sapelkin AV (2020). Analysis of the atomic structure of CdS magic-size clusters by X-ray absorption spectroscopy. Nanoscale  vol. 12, (37) 19325-19332. 10.1039/d0nr05186a
  • Ermakov AV, Kudryavtseva VL, Demina PA, Verkhovskii RA, Zhang J, Lengert EV, Sapelkin AV, Goryacheva IY and Sukhorukov GB (2020). Site-specific release of reactive oxygen species from ordered arrays of microchambers based on polylactic acid and carbon nanodots. Journal of Materials Chemistry B  vol. 8, (35) 7977-7986. 10.1039/d0tb01148g
  • Kryuchkov NP, Mistryukova LA, Sapelkin AV, Brazhkin VV and Yurchenko SO (2020). Universal Effect of Excitation Dispersion on the Heat Capacity and Gapped States in Fluids. American Physical Society  Physical Review Letters  vol. 125, (12) 10.1103/physrevlett.125.125501
  • Luo H, Liu Y, Dimitrov SD, Steier L, Guo S, Li X, Feng J, Xie F, Fang Y, Sapelkin A, Wang X and Titirici MM (2020). Pt single-atoms supported on nitrogen-doped carbon dots for highly efficient photocatalytic hydrogen generation. Journal of Materials Chemistry A  vol. 8, (29) 14690-14696. 10.1039/d0ta04431h
  • Sindeeva OA, Kopach O, Kurochkin MA, Sapelkin A, Gould DJ, Rusakov DA and Sukhorukov GB (2020). Polylactic Acid-Based Patterned Matrixes for Site-Specific Delivery of Neuropeptides On-Demand: Functional NGF Effects on Human Neuronal Cells. Frontiers in Bioengineering and Biotechnology  vol. 8, 10.3389/fbioe.2020.00497
  • Kryuchkov NP, Mistryukova LA, Sapelkin AV and Yurchenko SO (2020). Strange attractors induced by melting in systems with nonreciprocal effective interactions. Phys Rev E  vol. 101, (6-1) 10.1103/PhysRevE.101.063205
  • Amoroso G, Sapelkin A, Ye Q, Araullo-Peters V, Cecconello A, Fernandez G and Palma M (2020). DNA-Driven Dynamic Assembly of MoS2 Nanosheets. Royal Society of Chemistry  Faraday Discussions  10.1039/c9fd00118b
  • Yakovlev EV, Kryuchkov NP, Ovcharov PV, Sapelkin AV, Brazhkin VV and Yurchenko SO (2020). Direct Experimental Evidence of Longitudinal and Transverse Mode Hybridization and Anticrossing in Simple Model Fluids. American Chemical Society  Journal of Physical Chemistry Letters  10.1021/acs.jpclett.9b03568
  • Kurochkin MA, Sindeeva OA, Brodovskaya EP, Gai M, Frueh J, Su L, Sapelkin A, Tuchin VV and Sukhorukov GB (2020). Laser-triggered drug release from polymeric 3-D micro-structured films via optical fibers. Elsevier  Materials Science and Engineering C: Materials For Biological Applications  vol. 110, 10.1016/j.msec.2020.110664

2019

  • Papaioannou N, Titirici MM and Sapelkin A (2019). Investigating the Effect of Reaction Time on Carbon Dot Formation, Structure, and Optical Properties. American Chemical Society  Acs Omega  10.1021/acsomega.9b01798
  • Tan L, Pickard CJ, Yu K, Sapelkin A, Misquitta AJ and Dove MT (2019). Structures of CdSe and CdS Nanoclusters from Ab Initio Random Structure Searching. American Chemical Society  The Journal of Physical Chemistry C: Energy Conversion and Storage, Optical and Electronic Devices, Interfaces, Nanomaterials, A  10.1021/acs.jpcc.9b05763
  • Tan L, Misquitta AJ, Sapelkin A, Fang L, Wilson RM, Keeble DS, Zhang B, Zhu T, Riehle FS, Han S, Yu K and Dove MT (2019). X-ray total scattering study of magic-size clusters and quantum dots of cadmium sulphide. Nanoscale  10.1039/c9nr06355b
  • Kokorina AA, Sapelkin AV, Sukhorukov GB and Goryacheva IY (2019). Luminescent carbon nanoparticles separation and purification. Elsevier Bv  Advances in Colloid and Interface Science  vol. 274, 102043-102043. 10.1016/j.cis.2019.102043
  • Kokorina AA, Bakal AA, Shpuntova DV, Kostritskiy AY, Beloglazova NV, De Saeger S, Sukhorukov GB, Sapelkin AV and Goryacheva IY (2019). Gel electrophoresis separation and origins of light emission in fluorophores prepared from citric acid and ethylenediamine. Nature Publishing Group  Scientific Reports  vol. 9, (1) 10.1038/s41598-019-50922-6
  • Luo H, Papaioannou N, Salvadori E, Roessler MM, Ploenes G, Eck ERH, Tanase LC, Feng J, Sun Y, Yang Y, Danaie M, Jorge AB, Sapelkin A, Durrant J, Dimitrov SD and Titirici M (2019). Cover Feature: Manipulating the Optical Properties of Carbon Dots by Fine‐Tuning their Structural Features (ChemSusChem 19/2019). Chemsuschem  vol. 12, (19) 4335-4335. 10.1002/cssc.201902519
  • Yakovlev EV, Chaudhuri M, Kryuchkov NP, Ovcharov PV, Sapelkin AV and Yurchenko SO (2019). Experimental validation of interpolation method for pair correlations in model crystals. Aip Publishing  Journal of Chemical Physics  vol. 151, (11) 114502-114502. 10.1063/1.5116176
  • Luo H, Papaioannou N, Salvadori E, Roessler M, Ploenes G, van Eck ERH, Tanase L, Feng J, Sun Y, Yang Y, Danaie M, Sobrido ABJ, Sapelkin A, Durrant J, Dimitrov SD and Titirici M-M (2019). Manipulating the optical properties of carbon dots via fine tuning their structural features. Chemsuschem  10.1002/cssc.201901795
  • Vostrikova AM, Kokorina AA, Mitrophanova AN, Sindeeva OA, Sapelkin AV, Sukhorukov GB and Goryacheva IY (2019). One step hydrothermal functionalization of gold nanoparticles with folic acid. Colloids and Surfaces B: Biointerfaces  vol. 181, 533-538. 10.1016/j.colsurfb.2019.05.072
  • Yakovlev EV, Kryuchkov NP, Ovcharov PV, Pitiot K, Sapelkin AV and Yurchenko SO (2019). Defect-governed double-step activation and directed flame fronts. Physical Review E  vol. 100, (2) 10.1103/PhysRevE.100.023203
  • Pillet G, Sapelkin A, Bacsa W, Monthioux M and Puech P (2019). Size-controlled graphene-based materials prepared by annealing of pitch-based cokes: G band phonon line broadening effects due to high pressure, crystallite size, and merging with D' band. Wiley  Journal of Raman Spectroscopy  vol. 50, (12) 1861-1866. 10.1002/jrs.5723
  • Ermakov AV, Prikhozhdenko ES, Demina PA, Gorbachev IA, Vostrikova AM, Sapelkin AV, Goryacheva IY and Sukhorukov GB (2019). Composite multilayer films based on polyelectrolytes and in situ-formed carbon nanostructures with enhanced photoluminescence and conductivity properties. Journal of Applied Polymer Science  vol. 136, (27) 10.1002/app.47718

2018

  • Papaioannou N, Marinovic A, Yoshizawa N, Goode AE, Fay M, Khlobystov A, Titirici MM and Sapelkin A (2018). Structure and solvents effects on the optical properties of sugar-derived carbon nanodots. Scientific Reports  vol. 8, (1) 10.1038/s41598-018-25012-8
  • Vostrikova AV, Prikhozhdenko ES, Mayorova OA, Goryacheva IY, Tarakina NV, Sukhorukov GB and Sapelkin AV (2018). Thermal carbonization in nanoscale reactors: Controlled formation of carbon nanodots inside porous CaCO3 microparticles. Scientific Reports  vol. 8, (1) 10.1038/s41598-018-27488-w
  • Karatutlu A, Boi FS, Wilson RM, Ersoy O, Ortac B and Sapelkin A (2018). A Bean‐Like Formation of Germanium Nanoparticles Inside CNTs by the Subsequent Operation of Colloidal Synthesis and Catalytic Chemical Vapor Deposition Methods. Crystal Research and Technology  vol. 53, (11) 10.1002/crat.201800123
  • Sindeeva OA, Prikhozhdenko ES, Bratashov DN, Vostrikova AM, Atkin VS, Ermakov AV, Khlebtsov BN, Sapelkin AV, Goryacheva IY and Sukhorukov GB (2018). Carbon dot aggregates as an alternative to gold nanoparticles for the laser-induced opening of microchamber arrays. Soft Matter  10.1039/c8sm01714j
  • Prikhozhdenko ES, Bratashov DN, Mitrofanova AN, Sapelkin AV, Yashchenok AM, Sukhorukov GB and Goryacheva IY (2018). Solvothermal synthesis of hydrophobic carbon dots in reversed micelles. Journal of Nanoparticle Research  vol. 20, (9) 10.1007/s11051-018-4336-x
  • Brazhkin VV, Prescher C, Fomin YD, Tsiok EN, Lyapin AG, Ryzhov VN, Prakapenka VB, Stefanski J, Trachenko K and Sapelkin AV (2018). Comment on Behavior of Supercritical Fluids Across the Frenkel Line. J Phys Chem B  10.1021/acs.jpcb.7b11359
  • Karatutlu A, Patil B, Seker ¿, Istengir S, Bolat A, Yildirim O, Sevgen YN, Bak¿¿ Y, Ortaç B, Yilmaz E and Sapelkin A (2018). Structural, Optical, Electrical and Electrocatalytic Activity Properties Of Luminescent Organic Carbon Quantum Dots. Chemistryselect  vol. 3, (17) 4730-4737. 10.1002/slct.201800714
  • ZHANG D, PAPAIOANNOU N, David NM, LUO H, GAO H, Tanase LC, Degousee T, Samori P, SAPELKIN A, FENWICK O, TITIRICI M and KRAUSE SK (2018). Photoelectrochemical response of carbon dots (CDs) derived from chitosan and their use in electrochemical imaging. Rsc  Materials Horizons  10.1039/c7mh00784a
  • Kopach O, Zheng K, Dong L, Sapelkin A, Voitenko N, Sukhorukov GB and Rusakov DA (2018). Nano-engineered microcapsules boost the treatment of persistent pain. Drug Delivery  vol. 25, (1) 435-447. 10.1080/10717544.2018.1431981
  • Karatutlu A, Barhoum A and Sapelkin A (2018). Chapter 1 Liquid-phase synthesis of nanoparticles and nanostructured materials. Emerging Applications of Nanoparticles and Architecture Nanostructures  10.1016/b978-0-323-51254-1.00001-4
  • Karatutlu A, Barhoum A and Sapelkin A (2018). Chapter 20 Theories of nanoparticle and nanostructure formation in liquid phase. Emerging Applications of Nanoparticles and Architecture Nanostructures  10.1016/b978-0-323-51254-1.00020-8

2017

  • Kokorina AA, Prikhozhdenko ES, Tarakina NV, Sapelkin AV, Sukhorukov GB and Goryacheva IY (2017). Dispersion of optical and structural properties in gel column separated carbon nanoparticles. Carbon  vol. 127, 541-547. 10.1016/j.carbon.2017.11.039
  • Smith D, Hakeem MA, Parisiades P, Maynard-Casely HE, Foster D, Eden D, Bull DJ, Marshall ARL, Adawi AM, Howie R, Sapelkin A, Brazhkin VV and Proctor JE (2017). Crossover between liquidlike and gaslike behavior in CH4 at 400 K. American Physical Society  Physical Review E  vol. 96, 052113-1-052113-8. 10.1103/PhysRevE.96.052113
  • SUKHORUKOV G, Goryacheva I and Sapelkin A (2017). Carbon nanodots: mechanisms of photoluminescence and principles of applicationReview. Elsevier  Trends in Analytical Chemistry  10.1016/j.trac.2017.02.012
  • Song M, Karatutlu A, Ali I, Ersoy O, Zhou Y, Yang Y, Zhang Y, Little WR, Wheeler AP and Sapelkin AV (2017). Spectroscopic super-resolution fluorescence cell imaging using ultra-small Ge quantum dots. Optical Society of America (Osa)  Optics Express  vol. 25, (4) 4240-4253. 10.1364/OE.25.004240
  • Attanzio A, Sapelkin A, Gesuele F, van der Zande A, Gillin W, Zheng M and Palma M (2017). Carbon Nanotube-Quantum Dot Nanohybrids: Coupling with Single Particle Control in Aqueous Solution. Wiley - V C H Verlag Gmbbh & Co.  Small  10.1002/smll.201603042
  • Kokorina AA, Prikhozhdenko ES, Sukhorukov GB, Sapelkin AV and Goryacheva IY (2017). Luminescent carbon nanoparticles: Synthesis, methods of investigation, applications. Russian Chemical Reviews  vol. 86, (11) 1157-1171. 10.1070/RCR4751

2016

  • Zhang Y, Ersoy O, Karatutlu A and Sapelkin A (2016). Local structure of amorphous and nanoscale systems by numerical XANES calculations. Journal of Non-Crystalline Solids  vol. 451, 10-15. 10.1016/j.jnoncrysol.2016.07.001
  • Gao H, Sapelkin AV, Titirici MM and Sukhorukov GB (2016). In Situ Synthesis of Fluorescent Carbon Dots/Polyelectrolyte Nanocomposite Microcapsules with Reduced Permeability and Ultrasound Sensitivity. Acs Nano  10.1021/acsnano.6b05088
  • Sun YW, Hernández I, González J, Scott K, Donovan KJ, Sapelkin A, Rodríguez F and Dunstan DJ (2016). Significance of bundling effects on carbon nanotubes' response to hydrostatic compression. Journal of Physical Chemistry C  vol. 120, (3) 1863-1870. 10.1021/acs.jpcc.5b09082
  • Zhang Y, Ersoy O, Karatutlu A, Little W and Sapelkin A (2016). Local structure of Ge quantum dots determined by combined numerical analysis of EXAFS and XANES data. Journal of Synchrotron Radiation  vol. 23, 253-259. 10.1107/S160057751501913X

2015

  • Karatutlu A, Little W, Ersoy O, Zhang Y, Seker I and Sapelkin A (2015). Laser-induced particle size tuning and structural transformations in germanium nanoparticles prepared by stain etching and colloidal synthesis route. Journal of Applied Physics  vol. 118, (24) 10.1063/1.4939066
  • Corsini NRC, Zhang Y, Little WR, Karatutlu A, Ersoy O, Haynes PD, Molteni C, Hine NDM, Hernandez I, Gonzalez J, Rodriguez F, Brazhkin VV and Sapelkin A (2015). Pressure-Induced Amorphization and a New High Density Amorphous Metallic Phase in Matrix-Free Ge Nanoparticles. Nano Letters  vol. 15, (11) 7334-7340. 10.1021/acs.nanolett.5b02627
  • Chen S, McLachlan M, Sapelkin A and Binions R (2015). Aerosol assisted chemical vapour deposition of transparent conductive ZnO thin films with hexagonal microplate surfaces and ultrahigh haze values. Journal of Materials Chemistry A  vol. 3, (44) 22311-22315. 10.1039/c5ta06029j
  • Chen S, Carraro G, Barreca D, Sapelkin A, Chen W, Huang X, Cheng Q, Zhang F and Binions R (2015). Aerosol assisted chemical vapour deposition of Ga-doped ZnO films for energy efficient glazing: Effects of doping concentration on the film growth behaviour and opto-electronic properties. Journal of Materials Chemistry A  vol. 3, (24) 13039-13049. 10.1039/c5ta02163d
  • Zhang Y, Karatutlu A, Ersoy O, Little W, Cibin G, Dent A and Sapelkin A (2015). Structure and effects of annealing in colloidal matrix-free Ge quantum dots. Journal of Synchrotron Radiation  vol. 22, (1) 105-112. 10.1107/S1600577514022486
  • Karatutlu A, Song M, Wheeler AP, Ersoy O, Little WR, Zhang Y, Puech P, Boi FS, Luklinska Z and Sapelkin AV (2015). Synthesis and structure of free-standing germanium quantum dots and their application in live cell imaging. Royal Society of Chemistry  Rsc Advances  vol. 5, (26) 20566-20573. 10.1039/c5ra01529d

2014

  • Pavlenko E, Boyer F, Puech P, Olivier P, Sapelkin A, King S, Heenan R, Pons F, Gauthier B, Cadaux P-H and Bacsa W (2014). Origin of mechanical modifications in poly (ether ether ketone)/carbon nanotube composite. Journal of Applied Physics  vol. 115, (23) 10.1063/1.4883299
  • Sun YW, Hernández I, Ghandour AJ, Rice C, Crowe IF, Halsall MP, Sapelkin A, Gonzalez J, Rodriguez F and Dunstan DJ (2014). Resonance Raman spectroscopy of carbon nanotubes: Pressure effects on G-mode. High Pressure Research  vol. 34, (2) 191-197. 10.1080/08957959.2013.878714
  • Little W, Karatutlu A, Bolmatov D, Trachenko K, Sapelkin AV, Cibin G, Taylor R, Mosselmans F, Dent AJ and Mountjoy G (2014). Structural origin of light emission in germanium quantum dots. Scientific Reports  vol. 4, 10.1038/srep07372
  • Sun YW, Hernández I, Ghandour AJ, Rice C, Crowe IF, Halsall MP, Sapelkin A, Gonzalez J, Rodriguez F and Dunstan DJ (2014). Resonance Raman spectroscopy of carbon nanotubes: pressure effects on G-mode. High Pressure Research  10.1080/08957959.2013.878714
  • Ye HQ, Li Z, Peng Y, Wang CC, Li TY, Zheng YX, Sapelkin A, Adamopoulos G, Hernandez I, Wyatt PB and Gillin WP (2014). Organo-erbium systems for optical amplification at telecommunications wavelengths. Nature Publishing Group  Nature Materials  vol. 13, (April 2014) 382-386. 10.1038/NMAT3910
  • Widdicombe AT, Ravindrarajah P, Sapelkin A, Phillips AE, Dunstan D, Dove MT, Brazhkin VV and Trachenko K (2014). Measurement of bitumen viscosity in a room-temperature drop experiment: Student education, public outreach and modern science in one. Physics Education  vol. 49, (4) 406-411. 10.1088/0031-9120/49/4/406

2013

  • Pavlov AM, De Geest BG, Louage B, Lybaert L, De Koker S, Koudelka Z, Sapelkin A and Sukhorukov GB (2013). Magnetically engineered microcapsules as intracellular anchors for remote control over cellular mobility. Adv Mater  vol. 25, (48) 6945-6950. 10.1002/adma.201303287
  • Hatch SM, Sapelkin A, Cibin G, Taylor R, Dent A, Briscoe J and Dunn S (2013). Investigating the source of deep-level photoluminescence in ZnO nanorods using optically detected x-ray absorption spectroscopy. Journal of Applied Physics  vol. 114, (15) 10.1063/1.4824810
  • SAPELKIN A, Bolmatov D, Karatutlu A, Lyttle W, Trachenko K, Cibin G, Mosselmans F, Dent AJ and Mountjoy G (2013). Structural Origin of Light Emission in Germanium Quantum Dots. Arxiv 
  • Hatch SM, Briscoe J, Sapelkin A, Gillin WP, Gilchrist JB, Ryan MP, Heutz S and Dunn S (2013). Influence of anneal atmosphere on ZnO-nanorod photoluminescent and morphological properties with self-powered photodetector performance. Ieee  J. Appl. Phys.  vol. 113, (20) 204501-9. 10.1063/1.4805349
  • Ghandour AJ, Crowe IF, Proctor JE, Sun YW, Halsall MP, Hernandez I, Sapelkin A and Dunstan DJ (2013). Pressure coefficients of Raman modes of carbon nanotubes resolved by chirality: Environmental effect on graphene sheet. Physical Review B  vol. 87, (8) 10.1103/PhysRevB.87.085416

2012

  • (2012). Above room temperature ferromagnetism in Si:Mn and TiO(2-delta)Co. J Nanosci Nanotechnol  vol. 12, (9) 7540-7544. 10.1166/jnn.2012.6543
  • Puech P, Hu T, Sapelkin A, Gerber I, Tishkova V, Pavlenko E, Levine B, Flahaut E and Bacsa W (2012). Charge transfer between carbon nanotubes and sulfuric acid as determined by Raman spectroscopy. Physical Review B  vol. 85, (20) 10.1103/PhysRevB.85.205412

2011

  • Ghandour AJ, Dunstan DJ, Sapelkin A, Hernandez I, Halsall MP and Crowe IF (2011). Effect of water on resonant Raman spectroscopy of closed single-walled carbon nanotubes. Physica Status Solidi B-Basic Solid State Physics  vol. 248, (11) 2548-2551. 10.1002/pssb.201100074
  • Ghandour AJ, Dunstan DJ and Sapelkin A (2011). Raman G-mode of single-wall carbon nanotube bundles under pressure. J Raman Spectrosc  vol. 42, (8) 1611-1613. 10.1002/jrs.2905
  • (2011). Neuron Cells Uptake of Polymeric Microcapsules and Subsequent Intracellular Release. Macromolecular Bioscience  vol. 11, (6) 848-854. 10.1002/mabi.201000494

2010

  • Yashchenok AM, Bratashov DN, Gorin DA, Lomova MV, Pavlov AM, Sapelkin AV, Shim BS, Khomutov GB, Kotov NA, Sukhorukov GB, Möhwald H and Skirtach AG (2010). Carbon nanotubes on polymeric microcapsules: Freestanding structures and point-wise laser openings. Advanced Functional Materials  vol. 20, (18) 3136-3142. 10.1002/adfm.201000846
  • Chang H, Khan R, Rong Z, Sapelkin A and Vadgama P (2010). Study of albumin and fibrinogen membranes formed by interfacial crosslinking using microfluidic flow. Biofabrication  vol. 2, (3) 10.1088/1758-5082/2/3/035002

2009

  • (2009). Structure, electrical and magnetic properties, and the origin of the room temperature ferromagnetism in Mn-implanted Si. J Exp Theor Phys+  vol. 109, (4) 602-608. 10.1134/S1063776109100069

2008

  • Ghandour AJ, Dunstan DJ, Sapelkin A, Proctor JE and Halsall MP (2008). High-pressure Raman response of single-walled carbon nanotubes: Effect of the excitation laser energy. Phys Rev B  vol. 78, (12) 10.1103/PhysRevB.78.125420
  • Puech P, Ghandour A, Sapelkin A, Tinguely C, Flahaut E, Dunstan DJ and Bacsa W (2008). Raman G band in double-wall carbon nanotubes combining p doping and high pressure. Phys Rev B  vol. 78, (4) 10.1103/PhysRevB.78.045413
  • Kartopu G, Sapelkin AV, Karavanskii VA, Serincan U and Turan R (2008). Structural and optical properties of porous nanocrystalline Ge. J Appl Phys  vol. 103, (11) 10.1063/1.2924417

2007

  • Sapelkin AV, Karavanskii VA, KartopU G, Es-Souni M and Luklinska Z (2007). Raman study of nano-crystalline Ge under high pressure. Phys Status Solidi B  vol. 244, (4) 1376-1380. 10.1002/pssb.200642432
  • Balagurov LA, Klimonsky SO, Kobeleva SP, Konstantinova AS, Orlov AF, Perov NS, Sapelkin A and Yarkin DG (2007). Ferromagnetism of 3-D transition metals solid solutions in titanium oxides. J Magn Magn Mater  vol. 310, (2) E714-E716. 10.1016/j.jmmm.2006.10.779

2006

  • Balagurov LA, Klimonsky SO, Kobeleva SP, Konstantinova AS, Orlov AF, Perov NS, Sapelkin A and Yarkin DG (2006). Impact of vacuum thermal treatments on the structure and magnetic properties of titanium oxide films doped with Co. J Phys-Condens Mat  vol. 18, (48) 10999-11005. 10.1088/0953-8984/18/48/027
  • Kartopu G, Es-Souni M, Sapelkin AV and Dunstan D (2006). A novel SERS-active substrate system: Template-grown nanodot-film structures. Phys Status Solidi A  vol. 203, (10) R82-R84. 10.1002/pssa.200622238
  • Puech P, Flahaut E, Sapelkin A, Hubel H, Dunstan DJ, Landa G and Bacsa WS (2006). Nanoscale pressure effects in individual double-wall carbon nanotubes. Phys Rev B  vol. 73, (23) 10.1103/PhysRevB.73.233408
  • Balagurov LA, Loginov BA, Petrova EA, Sapelkin A, Unal B and Yarkin DG (2006). Formation of porous silicon at elevated temperatures. Electrochim Acta  vol. 51, (14) 2938-2941. 10.1016/j.electacta.2005.09.022
  • Sapelkin AV, Bayliss SC, Unal B and Charalambou A (2006). Interaction of B50 rat hippocampal cells with stain-etched porous silicon. Biomaterials  vol. 27, (6) 842-846. 10.1016/j.biomaterials.2005.06.023

2005

  • Andrushin SY, Balagurov LA, Liberova GV, Loginov BA, Petrova EA, Sapelkin A, Unal B and Yarkin DG (2005). Formation of porous silicon on a non-conductive substrate and its use as a sacrificial layer. Semicond Sci Tech  vol. 20, (12) 1217-1222. 10.1098/0268-1242/20/12/013
  • Baru VG, Bayliss S, Zhitov VA, Zakharov LY, Kartopu G, Pokalyakin VI, Sapelkin A, Stepanov GV, Timofeev AA and Shevchenko OF (2005). Structural and Luminescent Properties of SiOxNy(Si) Nanocomposite Films. Russian Microelectronics  vol. 34, (5) 272-278. 10.1007/s11180-005-0038-z
  • Sapelkin AV (2005). Susan Caroline Bayliss - Obituary. Phys Today  vol. 58, (7) 78-78. 10.1063/1.2012477

2003

  • (2003). Structural and elastic anisotropy of carbon phases prepared from fullerite C-60. Appl Phys Lett  vol. 83, (19) 3903-3905. 10.1063/1.1625432
  • Greaves GN, Meneau F, Sapelkin A, Colyer LM, Gwynn IA, Wade S and Sankar G (2003). The rheology of collapsing zeolites amorphized by temperature and pressure. Nat Mater  vol. 2, (9) 622-629. 10.1038/nmat963
  • (2003). Pressure-induced crossover between diffusive and displacive mechanisms of phase transitions in single-crystalline alpha-GeO2. Phys Rev Lett  vol. 90, (14) 10.1103/PhysRevLett.90.145503
  • Kartopu G, Bayliss SC, Karavanskii VA, Curry RJ, Turan R and Sapelkin AV (2003). On the origin of the 2.2-2.3 eV photoluminescence from chemically etched germanium. J Lumin  vol. 101, (4) 275-283. 10.1016/s0022-2313(02)00570-7

2002

2001

1996

  • Brazhkin VV, Lyapin AG, Khvostantsev LG, Sidorov VA, Tsiok OB, Bayliss SC, Sapelkin AV and Clark SM (1996). Phase transformations and the nature of the semiconductor-to-metal transition in bulk a-GaSb and a-(Ge2)1-x(GaSb)x semiconductors under high pressure. Phys Rev B Condens Matter  vol. 54, (3) 1808-1818. 10.1103/physrevb.54.1808

1994

  • Sidorov VA, Brazhkin VV, Khvostantsev LG, Lyapin AG, Sapelkin AV and Tsiok OB (1994). Nature of semiconductor-to-metal transition and volume properties of bulk tetrahedral amorphous GaSb and GaSb-Ge semiconductors under high pressure. Phys Rev Lett  vol. 73, (24) 3262-3265. 10.1103/PhysRevLett.73.3262
  • BRAZHKIN V, LYAPIN A, POPOVA S and SAPELKIN A (1994). Semiconductor-metal transition in amorphous gallium antimonide at high-pressure. Jetp Letters  vol. 59, 130-134.

Grants of specific relevance to Materials Research

Grants

  • Local atomic correlations in low dimensional systems
    Sapelkin A
    £11,640 Royal Society (02-09-2019 - 01-09-2021)
  • Collective dynamics and pair correlations in atomic and colloidal systems across coupling regimes
    Sapelkin A
    £49,536 British Council (01-06-2019 - 31-12-2019)


  • Targeted drug delivery to neurons and glia using light- and field-sensitive microcapsules
    Rusakov DA, Sukhorukov GB, Volynski KE, Baxendale M and Sapelkin AV
    £730,436 Biotechnology and Biological Sciences Research Council (31-03-2012 - 29-09-2015)
    Abstract
  • Tunable Raman spectroscopy of carbon nanotubes under high pressure
    Dunstan DJ, Hernández I and Sapelkin AV
    £231,215 Engineering and Physical Sciences Research Council (31-05-2009 - 30-11-2011)
    Abstract
  • Bi-directional interfacing of electronics and cultured neurons
    Sapelkin A
    £208,241 Engineering and Physical Sciences Research Council (09-12-2004 - 08-10-2006)
    Abstract
  • Bi-directional interfacing of electronics and cultured neurons
    Sapelkin A
    £292,846 Engineering and Physical Sciences Research Council (30-09-2003 - 30-11-2004)
    Abstract