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Multiplication and division of the orbital angular momentum of light with diffractive transformation optics

Light(Science & Applications) 2019年第1期8卷 111-123页

作者： Gianluca Ruffato Michele Massari filippo romanato Department of Physics and Astronomy‘G.Galilei’ University of Padovavia Marzolo 835131 PadovaItaly LaNN Laboratory for Nanofabrication of NanodevicesEcamRicertCorso StatiUniti 435127 PadovaItaly CNR-INFM TASC IOM National Laboratory S.S.14 Km 163.534012 TriesteItaly

We present a method to efficiently multiply or divide the orbital angular momentum(OAM)of light beams using a sequence of two optical *** key element is represented by an optical transformation mapping the azimuthal phase gradient of the input OAM beam onto a circular *** combining multiple circular-sector transformations into a single optical element,it is possible to multiply the value of the input OAM state by splitting and mapping the phase onto complementary circular ***,by combining multiple inverse transformations,the division of the initial OAM value is achievable by mapping distinct complementary circular sectors of the input beam into an equal number of circular phase *** elements have been fabricated in the form of phase-only diffractive optics with high-resolution electron-beam *** tests confirm the capability of the multiplier optics to perform integer multiplication of the input OAM,whereas the designed dividers are demonstrated to correctly split up the input beam into a complementary set of OAM *** elements can find applications for the multiplicative generation of higher-order OAM modes,optical information processing based on OAM beam transmission,and optical routing/switching in telecom.

关键词： optics circular complementary

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Surface Plasmon Polaritons Excitation and Propagation on Metallic Gratings： Far-Field and Near-Field Numerical Simulations

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材料科学与工程（中英文A版） 2011年第6期1卷 768-777页

作者： Gianluca Ruffato Gabriele Zacco filippo romanato Department of Physics ＂G. Galilei＂ Padova University Padova 35131 Italy LaNN Laboratory for Nanofabrication of Nanodevices VenetoNanotech Padova 35127 Italy IOM CNR TASC Laboratory Area Science Park Basovizza 34012 Trieste Italy

Metallic gratings are known to support the excitation and propagation of electromagnetic surface modes, the so called Surface Plasmon Polaritons (SPPs). Patterned metallic substrates have been nanofabricated by interferential lithography and subsequent thermal evaporation, and their plasmonic response has been analyzed in the visible range. A numerical code was implemented in order to simulate SPP excitation and propagation on the structure. In recent papers, we experimentally demonstrated how the azimuthal rotation of the grating originates an unexpected polarization phenomenology and provides benefits for plasmonic applications. Numerical simulations confirm the experimental results and complete the analysis with a study of the plasmonic near-field on the metallic surface in the conical mounting.

关键词：表面等离子体激元数值模拟金属光栅元激发传播近场最高人民检察院远场

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Covalent functionalization of decellularized tissues accelerates endothelialization

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Bioactive Materials 2021年第11期6卷 3851-3864页

作者： Eleonora Dal Sasso Annj Zamuner Andrea Filippi filippo romanato Tiziana Palmosi Luca Vedovelli Dario Gregori Jose Luís Gòmez Ribelles Teresa Russo Antonio Gloria Laura Iop Gino Gerosa Monica Dettin Department of Cardiac Thoracic and Vascular Sciences and Venetian Institute of Molecular MedicinePaduaItaly Department of Industrial Engineering University of PaduaPaduaItaly LIFELAB Program Consorzio per la Ricerca SanitariaCORISVeneto RegionItaly Department of Physics and Astronomy“G.Galilei” University of PaduaPaduaItaly Fondazione Bruno Kessler TrentoItaly Institute of Pediatric Research Citt`a della Speranza PaduaItaly Center for Biomaterials and Tissue Engineering CBITUniversitat Polit`ecnica de Val`enciaVal`enciaSpain Biomedical Research Networking Center on Bioengineering Biomaterials and Nanomedicine(CIBER-BBN)ValenciaSpain Institute of Polymers Composites and BiomaterialsNational Research Council of ItalyNaplesItaly

In the field of tissue regeneration,the lack of a stable endothelial lining may affect the hemocompatibility of both synthetic and biological *** drawbacks might be prevented by specific biomaterial functionalization to induce selective endothelial cell(EC)*** bovine pericardia and porcine aortas were selectively functionalized with a REDV tetrapeptide at 10^(-5)M and 10^(-6)M working *** scaffold-bound peptide was quantified and REDV potential EC adhesion enhancement was evaluated in vitro by static seeding of human umbilical vein *** viable cells and MTS production were statistically higher in functionalized tissues than in *** histoarchitecture,geometrical features,and mechanical properties were unaffected by peptide *** selective immobilization of REDV was effective in accelerating ECs adhesion while promoting proliferation in functionalized decellularized tissues intended for blood-contacting applications.

关键词： Decellularized pericardium Decellularized aorta Covalent functionalization Endothelialization REDV Mechanical analysis

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通过电磁涡旋在同一频率上实现多信道分离:首次试验测试

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通信对抗 2017年第1期36卷 53-60页

作者： Fabrizio Tamburini Elettra Mari Anna Sponselli Bo Thid'e Antonio Bianchini filippo romanato 张建强潘高峰陈鼎鼎 Department of Physics and Astronomy University of Padova Italy CIVEN Italy CISAS University of Padova Italy Swedish Institute of Space Physics Sweden Scuola Galileiana di Studi Superiori University of Padova Italy LaNN Laboratory for Nanofabrication of Nanodevices Italy 不详

通过实际环境中的试验测试,说明用两个在同一频率但以不同轨道角动量状态编码的非相干无线电波束可以同时在两个独立无线电信道上发射。这种新的无线电技术,即使不使用极化、多端口或者密集编码等方法,理论上也可以在指定的固定带宽上... 详细信息

通过实际环境中的试验测试,说明用两个在同一频率但以不同轨道角动量状态编码的非相干无线电波束可以同时在两个独立无线电信道上发射。这种新的无线电技术,即使不使用极化、多端口或者密集编码等方法,理论上也可以在指定的固定带宽上实现无数个信道。这为无线电科学的技术创新和无线电通信协议的全新范式铺平了道路,并为无线电频谱拥挤问题提供了一种新的解决方案。

关键词：试验测试信道分离频率无线电信道涡旋电磁轨道角动量无线电技术

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