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Publications

Year 2013

  • Katla Sai Krishna, Pilarisetty Tarakeshwar, Vladimiro Mujica, and Challa S. S. R. Kumar, Chemically Induced Magnetism in Atomically Precise Gold Clusters, Small, 2013, accepted.
  • Katla Sai Krishna, Challa S. S. R. Kumar, Lab-on-a-chip synthesis of inorganic nanomaterials and quantum dots for biomedical applications, Adv. Drug. Del. Rev., 2013, accepted.
  • Jing Liu, Katla Sai Krishna, Yaroslov. B. Losovyj, Soma Chattopadhyaya, Natalia Lozova, Jeffrey T Miller, James J. Spivey, and Challa S. S. R. Kumar, Ligand-stabilized and Atomically Precise Gold Nanocluster Catalysis: A Case Study for Correlating Fundamental Electronic Properties with Catalysis, Chem. A Euro. J., 2013, 19(31), 10201-8.
  • Katla Sai Krishna, Sanchita Biswas, Chelliah V. Navin, Dawit G. Yamane, Jeffery T. Miller, Challa S. S. R. Kumar, Millifluidics for Chemical Synthesis and Time-resolved Mechanistic Studies, Journal of Visualized Experiments (JoVE), 2013, accepted.
  • Chelliah V. Navin, Katla Sai Krishna, Theegala Chandra, Challa S. S. R. Kumar, Lab-on-a-chip devices for gold nanoparticle synthesis and their role as a catalyst support for continuous flow catalysis, Nanotechn. Rev., , 2013, accepted.
  • Sarthak Gaur, Hongyi Wu, More, Karen Leslie, Challa S.S.R. Kumar, George G. Stanley, and James J. Spivey, CO oxidation studies over cluster-derived Au/TiO2 and AUROliteT Au/TiO2 catalysts using DRIFTS, Catalysis Today., 2013, 2008, 72-81.
  • Katla Sai Krishna, Chelliah V. Navin, Sanchita Biswas, Varshni Singh, Kyungmin Ham, G. Lisa Bovenkamp, Chandra S. Theegala, Jeffery T Miller, James J. Spivey, and Challa S. S. R. Kumar, Millifluidics for Time-resolved Mapping of the Growth of Gold  NanostructuresJ.Am.Chem.Soc.,2013,  135 (14),  5450–5456
  • Yuehao Li,  Dawit G. Yamane,  Shuning Li,  Sanchita Biswas, Rupesh Reddy, Jost S. Goettert, Krishnaswamy Nandakumar, and Challa S.S.R.  Kumar, Geometric Optimization of Liquid–Liquid Slug Flow in a  Flow-focusing Millifluidic Device for Synthesis of Nanomaterials, Chemical Engineering Journal,  217 (2013) 447–459.

Year 2012

  • Sarthak Gaur, Sandra Johansson, Faruq Mohammad, Challa S. S. R. Kumar, and James J. Spivey, Catalytic Activity of Titania-Supported Core−Shell Fe3O4@Au Nano- Catalysts for CO Oxidation, J.Phy.Chem.C., 2012, 116(42), 22319-22326
  • Yaroslov. B. Losovyj, Shao-Chun Li,  Natalia Lozova, Khabibulakh Katsiev, Daniel Stellwagen,  Ulrike Diebold,  Lingmei Kong, and Challa S.S.R. Kumar, Evidence for s–d Hybridization in Au38 Clusters, J.Phys.Chem.C., 2012, 116(9), 5857-5861.
  • Shuning Li, Amitava Roy, Henning Lichtenberg, Gregory Merchan, Challa S. S. R. Kumar,  and J. Michael Köhler, Local Structure of ZnO Micro Flowers and Nanoparticles Obtained by Micro Segmented Flow Synthesis, ChemPhysChem, 2012, 13(6):1557-61.
  • D. Stellwagen, A. Weber, L.S. Bovenkamp, R. Jin, H. Bitter, C.S.S.R. Kumar, Ligand control in thiol stabilized Au38 clusters, RSC Adv., 2012 2(6), 2276-2283.
  • Sanchita Biswas, J. T. Miller, Yuehao Li, Krishnaswamy Nandakumar, and Challa S.S.R. Kumar, Developing Millifluidic Platform for Synthesis of Ultra-small Nanoclusters (UNCs): Ultra-small Copper Nanoclusters (UCNCs) as a Case Study, Small, 2012, 8(5), 688-698.
  • Nachal D. Subramanian, Challa S.S.R. Kumar, Kazuo Watanabe, Peter Fischer, Ryo Tanaka and James J. Spivey, A DRIFTS study of CO adsorption and hydrogenation on Cu-based core-shell nanoparticles, Catalysis Science & Technology, 2012, 2(3), 621-631.
  • Y. Li, A. Sanampudi,  V. R. Reddy, S. Biswas, K. Nandakumar, D. Yamane,  J. Goettert,  and C.S.S.R. Kumar., Size Evolution of Gold Nanoparticles in a Millifluidic ReactorPhysChemPhys, 2012, 13(1), 177-182.
  • Sarthak Gaur, Jeffrey T. Miller, Daniel Stellwagen, Ashwin Sanampudi, Challa S.S.R. Kumar, and James J. Spivey,  Synthesis, characterization, and testing of supported Au catalysts prepared from atomically-tailored Au38(SC12H25)24 clusters, Phys. Chem. Chem. Phys, 2012, 14(5), 1627-1634.
  • G. Balaji, R. A. Narayanan, A. Weber,  F. Mohammad,  and C. S. S. R. Kumar, Giant Magnetostriction in Magnetite Nanoparticles, J. Mat. Sci. & Eng, B : Advanced Functional Solid-State Materials2012, 177(1), 14-18.

Year 2011

  • Roy, Amitava; Morikawa, Eizi; Bellamy, Henry; Kumar, Challa; Goettert, Jost; Suller, Victor; Morris, Kevin; Kurtz, Richard; Scott, John Status of the Center for Advanced Microstructures and Devices (CAMD)-2010, Nuclear Instruments & Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment 2011, 649(1), 15-18.
  • Challa S.S.R.Kumar and Faruq Mohammad, Magnetic Nanomaterials for Hyperthermia-based Therapy and Controlled Drug Delivery, Adv. Drug Del. Rev., 2011,  63, 789-808.
  • Nachal D. Subramanian, Juana Moreno, James J. Spivey and Challa S.S.R. Kumar,  Copper Core-Porous Manganese Oxide Shell Nanoparticles, J.Phy.Chem.C., 2011, 115(30), 14500-14506.
  • Jason Jordan, Challa S.S.R.Kumar and Chandra S. Theegala, Preparation And Characterization Of Cellulase-Bound Magnetite Nanoparticles (SPION)Journal of Molecular Catalysis B: Enzymatic, 2011, 68(2), 139-146

Year 2010

  • Challa S.S.R.Kumar and Faruq Mohammad, Magnetic Gold Nanoshells: Step-wise Changing of Magnetism through Step-wise Biofunctionalization, J. Phys. Chem.Lett., 2010, 1(200), 3141–3146.
  • Faruq Mohammad, Gopalan Balaji, Andrew Weber, Rao M. Uppu, and Challa S. S. R. Kumar, Influence of Gold Nanoshell on Hyperthermia of Super Paramagnetic Iron Oxide Nanoparticles (SPIONs), J. Phys. Chem. C, 2010, 114 (45), 19194–19201.
  • Challa S.S.R. Kumar, Nanotechnology Tools in Pharmaceutical R&D, Materials Today, 2010, 12, 24-30.
  • Branca T, Cleveland ZI, Leuschner C, Kumar C, Fubara B, Maronpot RR, Warren W, Driehuys B. Hyperpolarized 3He MRI to Detect Lung Metastases Targeted by Magnetic Nanoparticles. Proc. Natl. Acad. Sci., 2010,  107:3693-3697.
  • G. Balaji, Rohini, De Silva, V. Palshin, N. Desilva, G. Palmer, and Challa S. S. R. Kumar, Reaction Pathway Towards Formation of Cobalt Single Chain Magnets and Nanoparticles, Materials Science and Engineering: B, 2010, 167(2), 107-113.

Year 2009

  • Nachal Devi Subramanian, Balaji Gopalan, Challa S.S.R. Kumar and James J. Spivey, Development of cobalt - copper nanoparticles as catalysts for higher alcohol synthesis from syngas, Catalysis Today (2009), 147(2), 100-106.
  • Rosa T. Branca, Yuming M. Chen, Vladimir Mouraviev, Gigi Galiana, Elizabeth R. Jenista, Challa Kumar, Carola Leuschner, and Warren S. Warren, iDQC Anisotropy Map Imaging for Tumor Tissue Characterization In Vivo, Magnetic Resonance in Medicine 61:937–943 (2009).
  • Meng J, Fan J, Galiana G, et al LHRH-functionalized superparamagnetic iron oxide nanoparticles for breast cancer targeting and contrast enhancement in MRI. Materials Science and Engineering: C, (2009), 29(4), 1467-1479.
  • G. Balaji, G. L. Bovenkamp, V. Palshin and C. S.S.R. Kumar, Single Molecular Magnet - Gold Nanoparticle Composites, 2009 MRS Fall Symposium Proceedings.

Year 2008

  • Rohini M de Silva.; Palshin, Vadim; Nalin de Silva, K. M.; Henry, Laurence L.; Kumar, Challa S. S. R.. A new role for surfactants in the formation of cobalt nanoparticles. Journal of Materials Chemistry, 18(7), 738-747, 2008.
  • Yujun Song, Josef Hormes and Challa S.S.R. Kumar, Microfluidic Synthesis of Nanomaterials, Small, 4(6), 698-711, 2008.
  • Michelle C. Urbina, Svetlana Zinoveva, Toby Miller, Cristina M. Sabliov, William T. Monroe, and Challa S. S. R. Kumar., Investigation of Magnetic Nanoparticle-Polymer Composites for Multiple-controlled Drug Delivery, J. Phys.Chem. C., 112(30), 11102-11108, 2008.
  • Challa S. S. R Kumar, Nanomaterials for Medical Applications, Kirk-Othmer Encyclopedia of Chemical Technology, 2008.
  • Metallic Nanomaterials, Nanomaterials for the Life Sciences (Edited by Challa S.S.R.Kumar), published by Wiley-VCH, 2008.
  • • Palshin, Vadim; DeSilva, Rohini; Kumar, Challa S. S. R.. X-ray absorption spectroscopy investigation of different crystallographic structures of cobalt nanoparticles. Materials Research Society Symposium Proceedings (2008), 1074E(Synthesis and Metrology of Nanoscale Oxides and Thin Films), Paper #: 1074-I10-28.

Year 2007

  • Zinoveva, Svetlana; De Silva, Rohini; Louis, Russell D.; Datta, Proyag; Kumar, Challa S. S. R.; Goettert, Jost; Hormes, Josef. The wet chemical synthesis of Co nanoparticles in a microreactor system: A time-resolved investigation by X-ray absorption spectroscopy. Nuclear Instruments & Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment (2007), 582(1), 239-241.
  • Roy, Amitava; Morikawa, Eizi; Bellamy, Henry; Kumar, Challa; Goettert, Jost; Suller, Victor; Morris, Kevin; Ederer, David; Scott, John. Status of the Center for Advanced Microstructures and Devices (CAMD)-2007. Nuclear Instruments & Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment (2007), 582(1), 22-25
  • Kumar, Challa S. S. R.; Leuschner, Carola; Urbina, Michelle; Ozkaya, Tevhida; Hormes, Josef. Glutaric acid as a spacer facilitates improved intracellular uptake of LHRN-SPION into human breast cancer cells. International Journal of Nanomedicine (2007), 2(2), 175-179.
  • de Silva, Rohini M.; Palshin, Vadim; Fronczek, Frank R.; Hormes, Josef; Kumar, Challa S. S. R..  Investigation of the Influence of Organometallic Precursors on the Formation of Cobalt Nanoparticles.    Journal of Physical Chemistry C  (2007),  111(28),  10320-10328.
  • Astete, Carlos E.; Kumar, Challa S. S. R.; Sabliov, Cristina M.   Size control of poly(D,L-lactide-co-glycolide) and poly(D,L-lactide-co-glycolide)-magnetite nanoparticles synthesized by emulsion evaporation technique.    Colloids and Surfaces, A: Physicochemical and Engineering Aspects  (2007),  299(1-3),  209-216.
  • Kizilkaya, Orhan; Ono, Masaki; Bianchetti, Chris; Kumar, Challa S. S. R.; Morikawa, Eizi.  Ultrathin film assembly of sulfobetaine-stabilized palladium nanoparticles investigated by photoemission spectroscopy.    Materials Letters  (2007),  61(7),  1533-1536.

Year 2006

  • Carola Leuschner, Challa S. S. R. Kumar, Zhou, Jikou, Soboyejo, Winston O, William Hansel, and Josef Hormes, LHRH-conjugated magnetic iron oxide nanoparticles for detection of breast cancer metastases, Breast Cancer Research and Treatment (2006).
  • Bala G. Nidumolu, Michelle C. Urbina, Josef Hormes, Challa S. S. R. Kumar, and W. Todd Monroe, Functionalization of Gold and Glass Surfaces with Magnetic Nanoparticles Using Biomolecular Interactions, Biotechnology Progress, 22(1), 91-95, (2006)
  • Zhou, Jikou; Leuschner, Carola; Kumar, Challa; Hormes, Josef F.; Soboyejo, Winston O., Sub-cellular accumulation of magnetic nanoparticles in breast tumors and metastases, Biomaterials, 27(0), 2001-2008, (2006).
  • Zhou, J.; Leuschner, C.; Kumar, C.; Hormes, J.; Soboyejo, W. O.   A TEM study of functionalized magnetic nanoparticles targeting breast cancer cells.    Materials Science & Engineering, C: Biomimetic and Supramolecular Systems  (2006),  26(8),  1451-1455.  
  • Song, Yujun; Modrow, Hartwig; Henry, Laurence L.; Saw, Cheng K.; Doomes, E. E.; Palshin, Vadim; Hormes, Josef; Kumar, Challa S. S. R.   Microfluidic Synthesis of Cobalt Nanoparticles.    Chemistry of Materials  (2006),  18(12),  2817-2827.

Year 2005

  • Wen, Fei; Waldoefner, Norbert; Schmidt, Wolfgang; Angermund, Klaus; Boennemann, Helmut; Modrow, Stephanie; Zinoveva, Svetlana; Modrow, Hartwig; Hormes, Josef; Beuermann, Lars; Rudenkiy, Sergiy; Maus-Friedrichs, Wolfgang; Kempter, Volker; Vad, Thomas; Haubold, Heinz-Guenter. Formation and characterization of Pt nanoparticle networks,European Journal of Inorganic Chemistry (2005), (18), 3625-3640.
  • Brendebach, B.; Bucher, S.; Hormes, J.; Boennemann, H.; Nagabhushana, K. S.; Brinkmann, R.; Modrow, H.,In-situ X-ray absorption near edge structure (XANES) spectroscopy of PtRu colloid catalysts at operating temperature.Physica Scripta, T (2005), T115(12th X-Ray Absorption Fine Structure International Conference (XAFS12), 2003), 773-775.
  • Modrow, H.; Koehl, G.; Hormes, J.; Boennemann, H.; Endruschat, U.; Moertel, R. In-situ X-ray absorption spectroscopy investigations during the conditioning procedure of PtRu colloid catalysts,Physica Scripta, T (2005), T115(12th X-Ray Absorption Fine Structure International Conference (XAFS12), 2003), 671-674.
  • Lu, Zonghuan; Prouty, Malcolm D.; Guo, Zhanhu; Kumar, Challa S. S. R.; Lvov, Yuri M.. Layer-by-layer nanoengineered magnetic encapsulation system for drug delivery.PMSE Preprints (2005), 93, 656-657.
  • J. Zhou, C. Leuschner, C. Kumar, J. Hormes and W.O. Soboyejo, A TEM study of functionalized magnetic nanoparticles targeting breast cancer cells, Mater.Sci.Eng C, In Press, Corrected Proof, Available online 27 September 2005.
  • Carola Leuschner, Challa SSR Kumar, William Hansel, and Josef Hormes, Targeting breast cancer cells and their metastases through luteinizing hormone releasing hormone (LHRH) receptors using magnetic nanoparticles, J.Biomed.Nanotech., 1(2), 229-233, 2005.
  • Yujun Song, E. E. Doomes, John Prindle, Roland Tittsworth, Josef Hormes and Challa SSR Kumar Investigations into Sulfobetaine-stabilized Cu Nanoparticle Formation:Towards Development of a Micro fluidic Synthesis, J.Phys.Chem.B 109 (19); 9330-9338, 2005.
  • C. Milburn,J. Zhou, O. Bravo, C. Kumar, and W. O. Soboyejo, Sensing Interactions Between Vimentin Antibodies and Antigens for Early Cancer Detection, J.Biomed.Nanotech. 1(1), 30-38, 2005.
  • Kumar, Challa S. S. R.. Welcome to the Journal of Biomedical Nanotechnology. Journal of Biomedical Nanotechnology (2005), 1(1), 1-2.
  • H. Modrow, N. Palina, C.S.S.R. Kumar, E.E. Doomes, M. Aghasyan, V.Palshin, R. Tittsworth, J.C. Jiang, J. Hormes, Characterization of size-dependent structural and electronic properties of CTAB-stabilized cobalt nanoparticles by X-ray absorption spectroscopy, Physica Scripta, T115, 790-793, 2005.
  • Zonghuan Lu, Malcolm D. Prouty, Zhanhu Gao, Vladimir O. Golub, Challa S.S.R. Kumar, Yuri M. Lvov, Magnetic Switch of Permeability for Polyelectrolyte Microcapsules Embedded with Co@Au Nanoparticles , Langmuir,21(5), 2042 -2050, 2005.
  • J. Hormes, H. Modrow, H. Bonnemann and Challa S.S.R. Kumar, Electronic, magnetic and geometric properties of functionalized magnetic nanoparticles, J. Appl. Phys. Lett (2005), 97(10), 10R102-10R102-6.
  • Guo, Zhanhu; Kumar, Challa S. S. R.; Henry, Laurence L.; Doomes, E. E.; Hormes, Josef; Podlaha, Elizabeth J. Displacement Synthesis of Cu Shells Surrounding Co Nanoparticles.Journal of the Electrochemical Society (2005), 152(1), D1-D5.
  • "Contact Voltage" in Nanoparticle/Molecule Connections, Modrow, H.; Modrow, S.; Hormes, J.; Waldoefner, N.; Boennemann, H. Journal of Physical Chemistry B (2005), 109(2), 900-906.

Year 2004

  • Challa S.S.R.Kumar, Carola Leuschner, E. E. Doomes, Larry Henry, Martha Juban, and Josef Hormes, Efficacy of lytic peptide bound magnetite nanoparticles in destroying breast cancer cells, Journal of Nanoscience and Nanotechnology, 4 (3), 245-249, 2004.
  • Y. Song, Challa S.S.R.Kumar, and Josef Hormes, Fabrication of a SU-8 based microfluidic reactor on a PEEK substrate sealed by a Flexible semi-solid transfer’ (FST) process , Journal of Micromachining and Microengineering , 14, 1-9, 2004.
  • Y. Song, Challa S.S.R.Kumar, and Josef Hormes, Synthesis of Pd nanoparticles using a continuous flow polymeric micro reactor, Journal of Nanoscience and nanotechnology, 4(7), 788-793, 2004.
  • Ch.S.S.R.Kumar, M.Aghasyan, H. Modrow, J. Hormes, and R. Tittsworth , Gold nanoparticles in polymer micro beads -one pot synthesis and XANES characterization , Journal of Metastable & Nanocrystalline Materials , 23, 343-347, 2004.
  • Challa S.S.R.Kumar, Mher Aghasyan, Hartwig Modrow, Edward Doomes, Cindy Henk ,Josef Hormes and Rolland Tittsworth, Synthesis and Characterization of S-Au Interaction in Gold Nanoparticle bound Polymeric Beads , Journal of Nanoparticle Research, 6, 369-376, 2004.
  • Boennemann, H.; Endruschat, U.; Hormes, J.; Koehl, G.; Kruse, S.; Modrow, H.; Moertel, R.; Nagabhushana, K. S. Activation of colloidal PtRu fuel cell catalysts via a thermal "conditioning process". Fuel Cells (Weinheim, Germany) (2004), 4(4), 297-308.


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