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| http://dx.doi.org/10.5021/ad.2016.28.4.515 | DOI Listing |
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Magnetic-vortex nanodonuts enhance ferroptosis effect of tumor ablation through an imaging-guided hyperthermia/radiosensitization strategy.
iScience
October 2024
Henan Institute of Medical and Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450000, China.
Pursuing more efficient multifunctional treatment is the main challenge of preclinical nanoparticle-mediated theranostics research. Here, nanoscale magnetite vortex donut shape was synthesized as a platform, and then ultrasmall gold nanoparticles were successfully embedded into the nanoring surface, thereby obtaining gold-modified magnetic vortex donut (GMVD). GMVD has a high photothermal conversion efficiency (η = 42.
View Article and Find Full Text PDFMagnetic anchoring and guidance-assisted endoscopic irreversible electroporation for gastric mucosal ablation: a preclinical study in canine model.
Surg Endosc
October 2021
Department of Hepatobiliary Surgery and National Local Joint Engineering Research Center for Precision Surgery and Regenerative Medicine, First Affiliated Hospital of Xi'an Jiaotong University, No. 277, West Yanta Road, Xi'an, 710061, China.
Background: The aim of this study was to evaluate the feasibility, safety, and efficacy of magnetic anchoring and guidance-assisted endoscopic irreversible electroporation (MAG-IRE) for gastric mucosal ablation.
Methods: A catheter-based, donut-like, and MAG-assisted electrode was developed. MAG-IRE for gastric mucosal ablation was performed in eight beagle canines.
Here, we report on formation of nanoprotrusions on the surface of a bulk crystalline silicon wafer under femtosecond-laser ablation with a donut-shaped laser beam. By breaking circular symmetry of the irradiating donut-shaped fs-pulse beam, a switch in geometry of the formed surface nanoprotrusions from regular to chiral was demonstrated. The chirality of the obtained Si nanostructures was promoted with an asymmetry degree of the laser beam.
View Article and Find Full Text PDFPlasmonic Nanolenses Produced by Cylindrical Vector Beam Printing for Sensing Applications.
Sci Rep
December 2019
Far Eastern Federal University, Vladivostok, Russia.
Interaction of complex-shaped light fields with specially designed plasmonic nanostructures gives rise to various intriguing optical phenomena like nanofocusing of surface waves, enhanced nonlinear optical response and appearance of specific low-loss modes, which can not be excited with ordinary Gaussian-shaped beams. Related complex-shaped nanostructures are commonly fabricated using rather expensive and time-consuming electron- and ion-beam lithography techniques limiting real-life applicability of such an approach. In this respect, plasmonic nanostructures designed to benefit from their excitation with complex-shaped light fields, as well as high-performing techniques allowing inexpensive and flexible fabrication of such structures, are of great demand for various applications.
View Article and Find Full Text PDFIn this Letter, we report on the creation of hard x-ray beams carrying orbital angular momentum of topological charge -ℏ and -3ℏ at a photon energy of 8.2 keV via spiral phase plates made out of fused silica by ultrashort-pulsed laser ablation. The phase plates feature a smooth phase ramp with a 0.
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