Browsing by Author "Gence, Loik"
Now showing 1 - 11 of 11
Results Per Page
Sort Options
- ItemDesign of microwave antennas for nitrogen-vacancy centers applications(2018) Ortiz Moreno, Ari Rolando; Maze Ríos, Jerónimo; Gence, Loik; Pontificia Universidad Católica de Chile. Facultad de FísicaNitrogen-vacancy centers in diamond are promising candidates for a wide range of applications due to their quantum sensing capabilities at room temperature and easy optical readout and manipulation by means of confocal microscopy and the application of microwave radiation. Applying microwave radiation is not a trivial task depending on the application. If a single NV center is addressed, then a thin (20 —m diameter) copper wire is sufficient if the NV is within 50 —m from the wire. However in a large area with a lot of NV centers that must be addressed simultaneously with a homogeneous microwave intensity, then a more specialized microwave antenna is required. Towards this goal, a complete procedure for developing microstrip antennas for NV centers applications is presented. In order to drive all NV centers that point along a given direction with the same intensity, an antenna with a uniform intensity over this area is needed, which is not a trivial task. At a given power, there is a compromise between a uniform intensity and high intensity. This procedure includes the antenna design using optical lithography in order to achieve the desired spatial resolution, fabrication and testing using a vector network analyzer and different diamond samples. The fabricated antennas reached a maximum transmission of around 40% near the desired frequency (2.87 GHz), a 100 MHz bandwidth and are capable of resolving electronic spin resonance with a maximum contrast of 22%.
- ItemDirect reconstruction of two ultrashort pulses based on non-interferometric frequency-resolved optical gating(OSA - The Optical Society, 2021) Hidalgo-Rojas, Diego; Rojas-Aedo, Ricardo; Wheatley, Robert A.; Gence, Loik; Seifert, Birger© 2021 Optical Society of America.We describe a non-interferometric ultrashort-pulse measurement technique based on frequency-resolved optical gating (FROG) with which pulses can be reconstructed directly, i.e. non-iteratively. Two different FROG spectrograms are measured, which represent the only information required to reconstruct the amplitudes and phases of two independent input pulses. The direct reconstruction method is demonstrated with a single-shot FROG setup used to obtain the spectrograms generated from two synchronized input pulses. To demonstrate and determine the reconstruction quality for complex pulses, a programmable pulse shaper is used to modify the pulses sourced from a Kerr-lens mode-locked Ti:sapphire oscillator.
- ItemDoped Poly(3-hexylthiophene) Coatings onto Chitosan: A Novel Approach for Developing a Bio-Based Flexible Electronic(2020) Bonardd Salvador, Sebastián Ignacio; Morales, Natalia; Gence, Loik; Saldías Barros, César Antonio; Ángel Figueroa, Felipe Alfonso; Kortaberria, G.; Leiva Campusano, Ángel
- ItemElectrochemically template-grown multi-segmented gold-conducting polymer nanowires with tunable electronic behavior(2009) Callegari, V.; Gence, Loik; Melinte, S.; Demoustier-Champagne, S.
- ItemEngineering nonlinear electrical behavior with asymmetric multisegmented polymer-metal nanowires(2014) Gence, Loik; Callegari, V.; Demoustier Champagne, S.; Duvail, J. L.
- ItemEpitaxial growth and electrical transport properties of Cr2GeC thin films(2011) Eklund, P.; Bugnet, M.; Mauchamp, V.; Dubois, S.; Tromas, C.; Jensen, J.; Piraux, L.; Gence, Loik; Jaouen, M.; Cabioch, T.
- ItemFemtogram-controlled synthesis and self-aligned fabrication of polyaniline micro- and nanostructures(2010) Vlad, A.; Yunus, S.; Attout, A.; Serban, D.A.; Gence, Loik; Faniel, S.; Gohy, J.F.; Bertrand, P.; Melinte, S.
- ItemSelf-seeded electrochemical growth of ZnO nanorods using textured glass/Al-doped ZnO substrates(2014) Antohe, Viad Andrei; Mickan, Martin; Henry, Frederic; Delamare, Romain; Gence, Loik; Piraux, L.
- ItemSolid solution effects in the Ti2Al(CxNy) MAX phases: Synthesis, microstructure, electronic structure and transport properties(2014) Yu, Wenbo; Mauchamp, Vincent; Cabioch, Thierry; Magne, Damien; Gence, Loik; Piraux, L.; Gauthier Brunet, V.; Dubois, Sylvain
- ItemStructural, optoelectronic and photo-thermoelectric properties of crystalline alloy CuAlxFe1-xO2 delafossite oxide materials(2020) Wheatley, Robert Alastair; Roble Albeal, Martín Cristián; Gence, Loik; Acuña Porras, Camilo; Guzmán de la Cerda, Diego José Edgardo; Vojkovic Lagno, Smiljan Andrej; Seifert, Birger; Wallentowitz, Sascha; Volkmann, Ulrich; Díaz, Donovan; Rojas Aedo, R.; Hidalgo Rojas, D.
- ItemWrinkled titanium nitride nanocomposite for robust bendable electrodes(2019) Gence, Loik; Escalona, M.; Castillo, C.; Quero, F.; Saikia, P.; Wheatley, Robert Alastair; Diaz-Droguett, D.E.; Retamal Ponce, María José; Volkmann, Ulrich; Bhuyan, Heman