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Elaboration and Magnetic Properties of Cobalt-Palladium Magnetic Nanowires Encapsulated in Carbon Nanotubes

Journal of Surface Engineered Materials and Advanced Technology 2017年第1期7卷 1-12页

作者： olivier rousseau Cynthia Locard Aichata Kane Yves Roussigne Samir Farhat Salim Mourad Cherif Laboratoire des Sciences des Procedes et des Materiaux CNRSLSPM-UPR 3407Universite Paris 13PRES Sorbonne-Paris-CiteVilletaneuseFrance

Bimetallic one-dimensional (1-D) cobalt-palladium magnetic nanowires encapsuled by carbon nanotubes were synthesized on silicon substrate using plasma enhanced chemical vapor deposition technique. After the deposition of the catalyst, the growth of nanotubes takes place in two stages. The first is a thermal pretreatment to transform continuous nanometer bimetallic thick film into isolated and uniformly distributed nanoparticles over the entire surface of the substrate. The second step results in the growth of nanotubes perpendicular to the substrate by the addition of carbon atoms on the insulated metal nanoparticles. While growing the nanotubes at given thermochemical conditions, a Co-Pd eutectic is thought to diffuse inside the cavity of the nanotube along a length of few hundreds of nanometers as determined by high resolution, spatially resolved Electron Energy Loss Spectroscopy (EELS), and energy filtered elemental mapping. The magnetic anisotropy along the nanotube directions is observed. Ferromagnetic or superparamagnetic-like behavior of the filled nanotubes was measured through local magneto-optical Kerr effect or global superconducting quantum interference device measurements, respectively. Information on the magnetism of filled nanotubes at different scales is pointed out and discussed.

关键词： Magnetic Nanowire Filled Carbon Nanotubes Cobalt PECVD Static Magnetic Measurements

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Popliteal Venous Pseudoaneurysm and Arteriovenous Fistula after Orthopedic Surgery

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World Journal of Cardiovascular Surgery 2013年第1期3卷 1-7页

作者： Bertrand Saint-Lebes Emilie Chastonay olivier Borens Celine Dubuis Sebastien Deglise Francois Saucy Herve rousseau Jean-Marc Corpataux Department of Thoracic and Vascular Surgery Lausanne University HospitalLausanneSwitzerland Department of Orthopaedic and Trauma Surgery Lausanne University HospitalLausanneSwitzerland Department of Vascular Interventional Radiology University HospitalToulouseFrance

Arthroscopically assisted reconstruction of the anterior cruciate ligament (LCA) is generally a safe and effective procedure with a low rate of vascular complications. We report on a case of a 33-year-old woman with a combined arteriovenous fistula (AVF) and venous popliteal aneurysm that developed 6 months after arthroscopic anterior cruciate ligament reconstruction. At clinical exam the patient presented with left popliteal and calf pain, a tender pulsatile mass posterior to her left knee, popliteal bruit and a thrill at the popliteal fossa. CT scan showed an AVF arising from the left popliteal artery. An aneurysm was seen to fill at the same time as the popliteal vein. Findings at open surgical revision included AVF between the tibioperoneal trunk and the popliteal vein and a venous popliteal aneurysm at the level of the arteriovenous communication. The aneurysm and fistula were repaired. The patient had an uneventful follow up with complete recovery. We also report an endovascular treatment of a iatrogenic arterio-venous fistula.

关键词： Arthroscopy Complication Arteriovenous Fistula Anterior Cruciate Ligament Venous Aneurysm

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