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您的检索式：作者名="MICHAEL RUGGIERO"
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| 1 | Graphene-loaded metal wire grating for deep and broadband THz modulation in total internal reflection geometry显示文摘We employed a metallic wire grating loaded with graphene and operating in total internal reflection (TIR) geometry to realize deep and broadband THz modulation. The non-resonant field enhancement effect of the evanescent wave in TIR geometry and in the subwavelength wire grating was combined to demonstrate a ~77% modulation depth (MD) in the frequency range of 0.2–1.4 THz. This MD, achieved electrically with a SiO_2∕Si gated graphene device, was 4.5 times higher than that of the device without a metal grating in transmission geometry. By optimizing the parameters of the metallic wire grating, the required sheet conductivity of graphene for deep modulation was lowered to 0.87 mS. This work has potential applications in THz communication and real-time THz imaging. | YIWEN SUN RICCARDO DEGLJINNOCENTI DAVID A.RITCHIE HARVEY E.BEERE LONG XIAO MICHAEL RUGGIERO J.AXEL ZEITLER RAYKO I.STANTCHEV DANNI CHEN ZHENGCHUN PENG EMMA MACPHERSON XUDONG LIU | 2018 | Photonics Research2018，6，12： | 2 |
| 2 | Percutaneous coronary intervention of totally occluded coronary venous bypass grafts:An exercise in futility?显示文摘BACKGROUND Percutaneous coronary intervention(PCI)of diseased saphenous vein grafts(SVG)continues to pose a clinical challenge.Current PCI guidelines give a class III recommendation against performing PCI on chronically occluded SVG.However,contemporary outcomes after SVG intervention have incrementally improved with distal protection devices,intracoronary vasodilators,drug-eluting stents,and prolonged dual antiplatelet therapy.AIM To reassess the procedural and long-term outcomes of PCI for totally occluded SVG with contemporary techniques.METHODS This was a retrospective observational study conducted at a single university hospital.The study population consisted of 35 consecutive patients undergoing PCI of totally occluded SVG.Post-procedure dual antiplatelet therapy was continued for a minimum of one year and aspirin was continued indefinitely.Clinical outcomes were assessed at a mean follow-up of 1221±1038 d.The primary outcome was freedom from a major adverse cardiac event(MACE)defined as the occurrence of any of the following:death,myocardial infarction,stroke,repeat bypass surgery,repeat PCI,or graft reocclusion.RESULTS The study group included 29 men and 6 women with a mean age of 69±12 years.Diabetes was present in 14(40%)patients.All patients had Canadian Heart Classification class III or IV angina.Clinical presentation was an acute coronary syndrome in 34(97%)patients.Mean SVG age was 12±5 years.Estimated duration of occlusion was acute(<24 h)in 34%of patients,subacute(>24 h to 30 d)in 26%,and late(>30 d)in 40%.PCI was initially successful in 29/35 SVG occlusions(83%).Total stent length was 52±35 mm.Intraprocedural complications of distal embolization or no-reflow occurred in 6(17%)patients.During longer term follow-up,MACE-free survival was only 30%at 3 years and 17%at 5 years.CONCLUSION PCI of totally occluded SVG can be performed with a high procedural success rate.However,its clinical utility remains limited by poor follow-up outcomes. | Evan W Nardone Brandon M Madsen Melissa M McCarey David L Fischman Nicholas J Ruggiero Paul Walinsky Alec Vishnevsky Michael P Savage | 2021 | World Journal of Cardiology2021，13，9： | 0 |
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