Journal Article10.1021/NN304782D
Graphene-based photothermal agent for rapid and effective killing of bacteria.
573
TL;DR: Graphene demonstrated better photothermal antibacterial efficiency than carbon nanotubes, and a microfluidic chip system under continuous operation mode demonstrates the reusability of MRGOGA and offers a biocompatible platform for online phothothermal sterilization.
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Abstract: Conventional antibiotic therapies are becoming less efficient due to the emergence of antibiotic-resistant bacterial strains. Development of novel antibacterial material to effectively inhibit or kill bacteria is crucial. A graphene-based photothermal agent, magnetic reduced graphene oxide functionalized with glutaraldehyde (MRGOGA), was synthesized for efficient capture and effective killing of both gram-positive Staphylococcus aureus (S. aureus) and gram-negative Escherichia coli (E. coli) bacteria upon near-infrared (NIR) laser irradiation. In the present work, we took advantage of the excellent photothermal properties of reduced graphene oxide upon NIR laser irradiation and glutaraldehyde as an efficient capturing agent toward both bacteria. Its magnetic characteristic allows bacteria to be readily trapped in a small volume by the external magnet. The synergetic effects increase the heating extent by MRGOGA upon NIR laser irradiation and the killing of the captured bacteria. The survival rate and memb...
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Synergistic effect of chemo-photothermal therapy using PEGylated graphene oxide
TL;DR: The ability of the NGO-PEG-DOX nanoparticle to combine the local specific chemotherapy with external near-infrared (NIR) photothermal therapy significantly improved the therapeutic efficacy of cancer treatment and demonstrated a synergistic effect, resulting in higher therapeutic efficacy.
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Operation of Graphene Transistors at GHz Frequencies
Yu-Ming Lin,Keith A. Jenkins,Alberto Valdes-Garcia,Joshua P. Small,Damon B. Farmer,Phaedon Avouris +5 more
TL;DR: In this article, top-gated graphene transistors operating at high frequencies (GHz) have been fabricated and their characteristics analyzed, and the measured intrinsic current gain shows an ideal 1/f frequency dependence, indicating an FET-like behavior for GAs.
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