Browsing by Subject "Plasma (Ionized gases)"

Now showing items 1-20 of 39

    • Active species in N2 and N2-O2 afterglows for surface treatments 

      Ricard, André; Pointu, Anne Marie; Villeger, Sandrine; Canal Barnils, Cristina (2010)
      Article
      Open Access
      Production of active species is studied in N2 and in N2-O2 afterglows of electrical discharges at low and atmospheric gas pressures. They are produced in microwave discharges in a large range of gas pressures from a few ...

    • Advances on the Inductive Plasma Thruster Design for an Atmosphere-Breathing EP System 

      Romano, Francesco; Herdrichd, Georg H.; Boxberger, Adam; Rodríguez Donaire, Silvia; García-Almiñana, Daniel; Sureda Anfres, Miquel (International Astronautical Federation, 2018)
      Conference report
      Open Access
      Challenging space mission scenarios include those in very low Earth orbits, where the atmosphere creates significant drag to the S/C and forces their orbit to an early decay. For drag compensation, propulsion systems are ...

    • Avaluació dels Efectes del Tractament de Plasma de Baixa Temperatura sobre Ciments de Fosfat de Calci per a la millora de la Regeneració Òssia. 

      Dominguez Cardona, Pol (Universitat Politècnica de Catalunya, 2013-02)
      Master thesis (pre-Bologna period)
      Open Access
      Els ciments de fosfat de calci són materials molt utilitzats en aplicacions biomèdiques per a l’ompliment de cavitats òssies. Es troben constituı̈ts per una fase sòlida en forma de pols i un lı́quid, que al mesclar-se ...

    • Can we remove tattoos with non-thermal atmospheric plasma? 

      Tampieri, Francesco; Garcìa Araguz, Ariadna; Canal Barnils, Cristina (Wiley (John Wiley & Sons), 2022-01-01)
      Article
      Open Access
      Current methods for tattoo removal are long, costly and have drawbacks such as scarring among others. Looking for alternatives, here we assess the feasibility of non-thermal plasma (NTP) as a standalone method for the ...

    • Comparing spontaneous and pellet-triggered ELMs via non-linear extended MHD simulations 

      Cathey, Andrés; Hoelzl, Matthias; Futatani, Shimpei; Huijsmans, Guido T.A.; Pamela, Stanislas (2021-07-01)
      Article
      Open Access
      Injecting frozen deuterium pellets into an ELMy H-mode plasma is a well established scheme for triggering edge localized modes (ELMs) before they naturally occur. This paper presents non-linear simulations of spontaneous ...

    • Contribució als estudis de seguretat d’ITER mitjançant el codi AINA 

      Massanas, Guillem (Universitat Politècnica de Catalunya, 2012-06)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      En el present document es realitza un estudi de simulacions de pèrdua del control del plasma en un reactor termonuclear de fusió. En particular, el futur reactor del projecte ITER (International Thermonuclear Experimental ...

    • Current state of cold atmospheric plasma and cancer-immunity cycle: therapeutic relevance and overcoming clinical limitations using hydrogels 

      Zivanic, Milica; Espona Noguera, Albert; Lin, Abraham; Canal Barnils, Cristina (John Wiley & sons, 2023-01-20)
      Article
      Open Access
      Covenantee:   Universiteit Antwerpen
      Cold atmospheric plasma (CAP) is a partially ionized gas that gains attention as a well-tolerated cancer treatment that can enhance anti-tumor immune responses, which are important for durable therapeutic effects. This ...

    • Detección de puntos calientes y líneas de calor en imágenes térmicas de un reactor de fusión nuclear 

      Quiceno Lopera, Steven (Universitat Politècnica de Catalunya, 2020-01)
      Bachelor thesis
      Open Access
      In these moments of struggle against climate change that this generation faces, research in alternative energy and not dependent on fossil fuels is very important. One of the options under investigation is the energy ...

    • Electromagnetic propagation in plasmas, understanding the radio blackout during spacecraft reentry 

      García Sánchez, David (Universitat Politècnica de Catalunya, 2023-06)
      Bachelor thesis
      Open Access
      This thesis is devoted to the study of the radio communication blackout effect, produced in spacecrafts during its atmospheric re-entry. This phenomenon is produced by plasma, which is caused by atmospheric friction. The ...

    • Estudi del tractament superficial sobre materials polimèrics per a la millora de la capacitat d'adhesió 

      Escoda Marches, Adrià (Universitat Politècnica de Catalunya, 2018-06)
      Bachelor thesis
      Restricted access - author's decision
      En general, els materials polimèrics, per la seva naturalesa no tenen bones propietats adhesives. Existeixen varis tipus de tractaments superficials per modificar aquestes propietats. Aquest treball exposarà quines són ...

    • Estudio del efecto del tratamiento con plasma de fibras de lino para su aplicación en materiales compuestos 

      Saez Pinto, Javier (Universitat Politècnica de Catalunya, 2016-01-21)
      Master thesis
      Restricted access - author's decision
      La búsqueda y aplicación de fibras naturales en materiales compuestos es uno de los campos de investigación en crecimiento en los últimos tiempos debido a sus buenas propiedades específicas, su bajo coste y sus ventajas ...

    • Experimental measurements of radio signal attenuation and Faraday rotation due to electron number density in a plasma flow 

      Felgueiras Luis, Diana Zaida; Fagnani, Andrea; Viladegut Farran, Alan; Helber, Bernd; Camps Carmona, Adriano José; Chazot, Olivier (European Conference for AeroSpace Sciences (EUCASS), 2023)
      Conference report
      Open Access
      Spacecraft entering a planetary atmosphere are surrounded by a plasma layer containing high levels of ionization. The high electron number densities cause attenuation and rotation of the polarization of the emitted signal, ...

    • Experimental measurements of radio signal attenuation and Faraday rotation in an inductively coupled plasma facility 

      Felgueiras Luis, Diana Zaida; Viladegut, Alan; Camps Carmona, Adriano José; Chazot, Olivier (Karman Institute for Fluid Dynamics, 2023)
      Conference report
      Open Access
      Spacecraft entering a planetary atmosphere are surrounded by a plasma layer containing high levels of ionization due to the high temperatures on the shock layer. The high electron number densities cause attenuation and ...

    • Experimental techniques in determination of electron cyclotron power deposition profiles in thermonuclear plasmas 

      Miquel Pallicer, Àngel (Universitat Politècnica de Catalunya / Politecnico di Milano, 2014)
      Master thesis (pre-Bologna period)
      Open Access
      Electron cyclotron waves are widely used in magnetic confinement devices, specially in those involved in nuclear fusion research, to heat the electrons and achieve the ignition temperature. A still unsolved issue is ...

    • Fabricació de dispositius fotònics integrats 

      Modolell Hernàndez, Marc (Universitat Politècnica de Catalunya, 2017-06)
      Bachelor thesis
      Open Access
      This project has focused on the fabrication and characterization of hydrogenated amorphous silicon (a-Si:H) thin films to fabricate photonic devices on them, which can be applied to make revolutionary applications in the ...

    • Heating bulk ions in DEMO with ICRF waves 

      Gallart, Dani; Mantsinen, Mervi; Kazakov, Yevgen (Barcelona Supercomputing Center, 2015-05-05)
      Conference report
      Open Access
      Ion cyclotron resonance frequency heating (ICRF) is one of the auxiliary heating schemes presently envisaged for ITER and DEMO. In this paper we analyse the potential of ICRF waves to heat the fuel ions in DEMO. Our ...

    • How the feed gas composition influences the chemistry induced by non-thermal plasma in water solution 

      Lombart, Octavian (Universitat Politècnica de Catalunya, 2021-06-16)
      Bachelor thesis
      Open Access
      Non-thermal plasmas are ionized gases at room temperature composed of free electrons, ions, radicals, excited atoms and molecules, neutral molecules and electromagnetic radiation. They are highly reactive systems that are ...

    • Important parameters in plasma jets for the production of RONS in liquids for plasma medicine: A brief review 

      Khlyustova, Anna; Labay, Cédric Pierre; Machala, Zdenko; Ginebra Molins, Maria Pau; Canal Barnils, Cristina (2019-06)
      Article
      Open Access
      Covenantee:   Univerzita Komenského v Bratislave / Univerzita Komenského v Bratislave
      Reactive oxygen and nitrogen species (RONS) are among the key factors in plasma medicine. They are generated by atmospheric plasmas in biological fluids, living tissues and in a variety of liquids. This ability of plasmas ...

    • Indoor PM2.5 removal efficiency of two different non-thermal plasma systems 

      Hernández Díaz, David; Martos Ferreira, David; Hernández Abad, Vicente; Villar Ribera, Ricardo Alberto; Tarrés Farrés, Joaquim Agustí; Rojas Sola, José Ignacio (2021-01-15)
      Article
      Open Access
      The use of non-thermal plasma (NTP) generators in air processing systems and their duct networks to improve indoor air quality (IAQ) has grown considerably in recent years. This paper reviews the advantages and disadvantages ...

    • Investigation into potential for cold plasma to treat contaminated seawater 

      Gámez Sanz, Robert (Universitat Politècnica de Catalunya, 2013-05)
      Master thesis (pre-Bologna period)
      Restricted access - author's decision
      This paper will be focus in contaminated seawater treatment and in a new technique, known as Plasma Assisted Processing, which was used to treat such seawater. This process is based on using cold plasma technology whereby ...