Dr. Linfeng Chen Profile

Dr. Linfeng Chen

Research Assistant Professor at Univ of Arkansas

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Publications (16)

Proceedings Article | 16 April 2013 Paper

Study of the electrochemical properties of magnetite, maghemite and hematite nanoparticles for their applications in lithium ion batteries

Linfeng Chen, Gaojun Wang, Jining Xie, Pratyush Rai, Jungmin Lee, Gyanesh Mathur, Vijay Varadan

Proceedings Volume 8691, 869115 (2013) https://doi.org/10.1117/12.2010070

KEYWORDS: Nanoparticles, Hematite, Oxides, Iron, Prototyping, Lithium, Ions, Magnetism, Scanning electron microscopy, Crystals

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Proceedings Article | 16 April 2013 Paper

Synthesis and electrochemical properties of spinel lithium manganese oxides for lithium ion batteries

Gaojun Wang, Linfeng Chen, Gyanesh Mathur, Vijay Varadan

Proceedings Volume 8691, 869113 (2013) https://doi.org/10.1117/12.2010063

KEYWORDS: Lithium, Spinel, Manganese, Oxides, Ions, Sol-gels, Solid state physics, Particles, Prototyping, Nanoparticles

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Proceedings Article | 16 April 2013 Paper

Development of thermoelectric inks for the fabrication of printable thermoelectric generators used in mobile wearable health monitoring systems

Jungmin Lee, Hyun Jung Kim, Linfeng Chen, Sang Choi, Gyanesh Mathur, Vijay Varadan

Proceedings Volume 8691, 86910R (2013) https://doi.org/10.1117/12.2009765

KEYWORDS: Thermoelectric materials, Printing, Body temperature, Fabrication, Energy harvesting, Nanoparticles, Composites, Bismuth, Scanning electron microscopy, Tellurium

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Proceedings Article | 24 October 2012 Paper

Printable thermoelectric devices and conductive patterns for medical applications

Jungmin Lee, Hyunjung Kim, Linfeng Chen, Sang Choi, Vijay Varadan

Proceedings Volume 8548, 85481C (2012) https://doi.org/10.1117/12.946254

KEYWORDS: Thermoelectric materials, Printing, Point-of-care devices, Manufacturing, Signal detection, Bismuth, Neodymium, Composites, Fabrication, Medical devices

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Proceedings Article | 24 October 2012 Paper

Synthesis of iron oxide nanotubes and their applications in neuroscience and drug delivery

Linfeng Chen, Jining Xie, Kiran Aatre, Justin Yancey, Malathi Srivatsan, Vijay Varadan

Proceedings Volume 8548, 854867 (2012) https://doi.org/10.1117/12.946051

KEYWORDS: Hematite, Iron, Magnetism, Oxides, Absorbance, Scanning electron microscopy, Neuroscience, Neurons, Transmission electron microscopy, Calibration

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Proceedings Article | 31 March 2012 Paper

Lithium iron phosphates as cathode materials in lithium ion batteries for electric vehicles

Gaojun Wang, Linfeng Chen, Gyanesh Mathur, Vijay Varadan

Proceedings Volume 8344, 83440L (2012) https://doi.org/10.1117/12.915638

KEYWORDS: Lithium, Iron, Ions, Composites, Carbon, Particles, Metals, Sol-gels, Prototyping, Nickel

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Proceedings Article | 31 March 2012 Paper

Size and shape dependence of the electrochemical properties of hematite nanoparticles and their applications in lithium ion batteries

Linfeng Chen, Gaojun Wang, Gyanesh Mathur, Vijay Varadan

Proceedings Volume 8344, 83441J (2012) https://doi.org/10.1117/12.915597

KEYWORDS: Hematite, Nanoparticles, Lithium, Ions, Oxides, Scanning electron microscopy, Metals, Electrodes, Prototyping, Particles

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Proceedings Article | 25 April 2011 Paper

Synthesis of hematite and maghemite nanotubes and study of their applications in neuroscience and drug delivery

Linfeng Chen, Jining Xie, Kiran Aatre, Justin Yancey, Sahitya Chetan, Malathi Srivatsan, Vijay Varadan

Proceedings Volume 7980, 798008 (2011) https://doi.org/10.1117/12.881843

KEYWORDS: Hematite, Magnetism, Neurons, Scanning electron microscopy, Absorbance, Iron, Sodium, Calibration, Neuroscience, Crystals

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Proceedings Article | 15 April 2011 Paper

Lithium vanadium oxides (Li(1+x)V3O8) as cathode materials in lithium-ion batteries for soldier portable power systems

Gaojun Wang, Linfeng Chen, Gyanesh Mathur, Vijay Varadan

Proceedings Volume 7980, 798013 (2011) https://doi.org/10.1117/12.885650

KEYWORDS: Lithium, Vanadium, Oxides, Sol-gels, Prototyping, Carbonates, Solid state physics, Solid state electronics, Ions, Electrodes

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SPIE Journal Paper | 1 October 2009

Fabrication of giant magneto resistance sensing devices with vertically grown Co/Cu nanowires on a substrate

Thong Le, Hargsoon Yoon, Linfeng Chen, Roy McCann, Vijay Varadan

JM3, Vol. 8, Issue 04, 043055, (October 2009) https://doi.org/10.1117/12.10.1117/1.3273963

KEYWORDS: Magnetism, Copper, Multilayers, Resistance, Electrodes, Silicon, Crystals, Magnetic sensors, Cobalt, Nanowires

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Proceedings Article | 1 April 2009 Paper

Magnetic nanoparticles and nanotubes for biomedical applications

Linfeng Chen, Jining Xie, Justin Yancey, Malathi Srivatsan, Vijay Varadan

Proceedings Volume 7291, 729108 (2009) https://doi.org/10.1117/12.821550

KEYWORDS: Magnetism, Nanoparticles, Biomedical optics, Nanomaterials, Particles, Nanomedicine, Scanning electron microscopy, Hematite, Nanotechnology, Iron

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Proceedings Article | 1 April 2009 Paper

Tubular nanostructured materials for bioapplications

Jining Xie, Linfeng Chen, Malathi Srivatsan, Vijay Varadan

Proceedings Volume 7291, 729103 (2009) https://doi.org/10.1117/12.820762

KEYWORDS: Carbon nanotubes, Hematite, Magnetism, Nanomaterials, Electrodes, Carbon, Glucose, Biomedical optics, Scanning electron microscopy, Nanoparticles

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Proceedings Article | 28 March 2009 Paper

New materials for old problems: What can nanomaterials do for biology and neuroscience?

Malathi Srivatsan, Mahadevappa Badanavalu, Justin Yancey, Jining Xie, Linfeng Chen, Philip Hankins, Hargsoon Yoon, Vijay Varadan

Proceedings Volume 7291, 729107 (2009) https://doi.org/10.1117/12.820771

KEYWORDS: Magnetism, Neurons, Electrodes, Nanomaterials, Hematite, Neuroscience, Molecules, Glasses, Scanning electron microscopy, Nanowires

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The emerging field of nanotechnology offers the development of new materials and methods for crucial neuroscience applications namely (a) promoting survival and growth of the neurons, and (b) monitoring physiological signals generated in the nervous system such as excitation, synaptic transmission, release of neurotransmitter molecules and cell-to-cell communication. Such bio-devices will have several novel applications in basic science, laboratory analysis and therapeutic treatments. Our goals in this field of research include (a) development of new biocompatible substrates to guide and promote neuronal growth along specific pathways; (b) designing a neuron-friendly, bio-molecule delivery system for neuroprotection; (c) monitoring of electrical activity from neuron and also from neuronal networks; (d) determining the diffusion and intracellular localization of nanomaterial interacting with neurons at high resolution; and (e) detection of release of neurotransmitter molecules by means of newly designed nanosensors. Here we describe the fabrication and use of magnetic nanotubes and nanowire electrode arrays in studies using a cell culture model of neuronally differentiating rat pheochromocytoma (PC 12) cells. The magnetic nanotubes were fabricated by a template method yielding hematite (α-Fe₂O₃) nanotubes. These nanotubes were coupled with nerve growth factor (NGF). Vertically aligned nanowires were fabricated on glass substrates using the lithography-assisted template bonding (LATB) method. Rat pheochromocytoma (PC12) cells were cultured on these nanotubes and polylysine coated nanowire electrodes. Our results showed that magnetic nanotube bound NGF was available to PC12 cells as they showed significant differentiation into neurons. PC12 cells growing on nanowires in the presence of NGF differentiated into neurons capable of synthesis and release of dopamine upon stimulation. The neurons grew healthy neurites appearing to form synapses with other neurons in the dish. These results show that the magnetic nanotubes were capable of delivering neurotrophic molecules and the nanowire electrodes are neuron-friendly, promote cell to cell communication and can be used as bio-sensors in the nervous system.

Proceedings Article | 31 March 2008 Paper

Synthesis of vertically aligned carbon nanotubes, magnetic nanotubes, and magnetic CNTs for cellular growth and detection

K. Aatre, J. Xie, L. Chen, J. Abraham, V. Varadan

Proceedings Volume 6931, 69310F (2008) https://doi.org/10.1117/12.776255

KEYWORDS: Magnetism, Carbon nanotubes, Scanning electron microscopy, Molecular nanotechnology, Semiconducting wafers, Transmission electron microscopy, Sensors, Silicon, Pathogens, Electrodes

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Proceedings Article | 11 April 2007 Paper

Experimental investigation of magnetic nanotubes in PC-12 neuron cells culturing

Linfeng Chen, Jining Xie, J. Yancey, Malathi Srivatsan, Vijay Varadan

Proceedings Volume 6528, 65280L (2007) https://doi.org/10.1117/12.717970

KEYWORDS: Magnetism, Neurons, Scanning electron microscopy, Transmission electron microscopy, Nervous system, Axons, Nerve, Neuroscience, Glasses, Atomic force microscopy

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Proceedings Article | 31 March 2006 Paper

Magnetic nanotubes and their potential use in neuroscience applications

Linfeng Chen, Jining Xie, Malathi Srivatsan, Vijay Varadan

Proceedings Volume 6172, 61720J (2006) https://doi.org/10.1117/12.668748

KEYWORDS: Magnetism, Neurons, Neuroscience, Scanning electron microscopy, Modulation, Transmission electron microscopy, Nervous system, Iron, Oxides, Molecules

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Showing 5 of 16 publications

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