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2021 Spring Meeting of the European Materials Research Society (E-MRS) to be held as a VIRTUAL Conference from May 31st to June 3rd, 2021. (The VIRTUAL 2021 Spring Meeting will consist of parallel symposia with invited speakers, oral and poster presentations, assorted by plenary sessions and a number of workshops and training courses.) .-https://www.european-mrs.com/meetings/2021-spring-meeting-0

2021 Spring Meeting of the European Materials Research Society (E-MRS) to be held as a VIRTUAL Conference from May 31st to June 3rd, 2021. (The VIRTUAL 2021 Spring Meeting will consist of parallel symposia with invited speakers, oral and poster presentations, assorted by plenary sessions and a number of workshops and training courses). .-https://www.european-mrs.com/meetings/2021-spring-meeting-0

E-MRS Spring Meeting. June 18 - 22, Convention Centre of Strasbourg, France.(2018). .--https://www.european-mrs.com/block-copolymer-self-assembly-fundamentals-and-applications-emrs

COLA 2017, Marseille (France) from 3 to 8 september 2017. -- https://cola2017.sciencesconf.org/

Conferencia invitada. -- USTS 2017, Salamanca, November 22nd to 24th, 2017. -- https://www.ultrafast.es/USTS2017

Strasbourg (France), from May 22 to 26, 2017. -- https://www.european-mrs.com/meetings/archives/2017-spring-meeting

Seminario de Jóvenes Investigadores en Polímeros; Madrid (Instituto de Ciencia y Tecnología de Polímeros del CSIC); 25 de Octubre 2016; http://www.ictp.csic.es/ICTP2/es/sejipol2016, En este trabajo, se presenta un estudio sobre la generación de estructuras periódicas inducidas por irradiación láser (LIPSS, por sus siglas en inglés) en superficies poliméricas de poli (etilén tereftalato) (PET), PET reforzado con grafito expandido, poli (trimetilén tereftalato) (PTT) y PTT reforzado con nanotubos de carbono de pared simple. La irradiación de las muestras se llevó a cabo usando un láser Nd:YAG (266 nm, 8 ns, 1-10 Hz). Se adquirieron imágenes topográficas de las superficies de las muestras irradiadas mediante el uso de microscopía de fuerza atómica (AFM, por sus siglas en inglés). En todos los casos, se consiguieron estructuras periódicas con periodos cercanos a la longitud de onda de irradiación, las cuales son paralelas al vector de polarización de la radiación incidente. Se encontró que la formación de LIPSS depende considerablemente de los parámetros de irradiación utilizados. Se llevó a cabo la caracterización de las muestras irradiadas y no irradiadas con el propósito de analizar los posibles cambios en las propiedades superficiales inducidos por la irradiación láser. Por un lado, se midieron las propiedades nanomecánicas usando la técnica de mapeo nanomecánico cuantitativo mediante AFM (PF-QNM, por sus siglas en inglés) y se realizaron medidas de adhesión con AFM y una punta coloidal. Por otra parte, se obtuvieron medidas de ángulo de contacto con diferentes líquidos para evaluar la mojabilidad y calcular las energías superficiales de las muestras. Finalmente, se usó la espectroscopia Raman para inspeccionar los posibles cambios químicos en los materiales tras la irradiación láser

XII Jornadas de Procesado de Materiales con Láser AIMEN; O Porriño (Pontevedra); 29 y 30 de septiembre de 2016, The formation of Laser Induced Periodic Surface Structures (LIPSS) is a process commonly used to nanostructure polymer surfaces. Forming of LIPSS is possible because of the irradiation of the polymer surface with polarized laser pulses at fluences below the ablation threshold. This leads to a modulation of the depth of the surface, resulting from an inhomogeneous intensity distribution, due to the interference between the incoming and the surface-scattered waves, reinforced with a positive feedback process. Such structures have a spatial period close to the laser wavelength, aligned parallel to the polarization of the laser beam

XIV Congreso Nacional de Materiales; Gijón (España); 8, 9 y 10 de junio 2016, The formation of Laser Induced Periodic Surface Structures (LIPSS) has demonstrated to be useful to structure in the nanoscale many types of materials including polymers . This technique requires the irradiation of the surface of the sample with polarized laser pulses at fluences below the ablation threshold. The formation of LIPSS can be explained as a modulation of the depth of the surface resulting from an inhomogeneous intensity distribution, due to the interference between the incoming and the surface-scattered waves, and a positive feedback process. This leads to the formation of structures with a spatial period close to the laser wavelength, aligned parallel to the polarization of the laser beam. Expanded Graphite (EG) is becoming a common reinforcement agent in polymers in order to improve substantially some of their properties, for instance, mechanical resistance or electrical conductivity. Poly(ethylene terephthalate) (PET) is a widely used polymer because of its excellent mechanical and chemical properties, and on the other hand, since it allows homogenous and simple dispersion of carbon based fillers

16 pags., 9 figs., 4 tabs. -- This article belongs to the Special Issue Carbon-Based Polymer Composites, In this work, the formation of laser-induced periodic surface structures (LIPSS) on the surfaces of thin films of poly(ethylene terephthalate) (PET) and PET reinforced with expanded graphite (EG) was studied. Laser irradiation was carried out by ultraviolet (265 nm) and near-infrared (795 nm) femtosecond laser pulses, and LIPSS were formed in both materials. In all cases, LIPSS had a period close to the irradiation wavelength and were formed parallel to the polarization of the laser beam, although, in the case of UV irradiation, differences in the formation range were observed due to the different thermal properties of the neat polymer in comparison to the composite. To monitor the modification of the physicochemical properties of the surfaces after irradiation as a function of the laser wavelength and of the presence of the filler, different techniques were used. Contact angle measurements were carried out using different reference liquids to measure the wettability and the solid surface free energies. The initially hydrophilic surfaces became more hydrophilic after ultraviolet irradiation, while they evolved to become hydrophobic under near-infrared laser irradiation. The values of the surface free energy components showed changes after nanostructuring, mainly in the polar component. Additionally, for UV-irradiated surfaces, adhesion, determined by the colloidal probe technique, increased, while, for NIR irradiation, adhesion decreased. Finally, nanomechanical properties were measured by the PeakForce Quantitative Nanomechanical Mapping method, obtaining maps of elastic modulus, adhesion, and deformation. The results showed an increase in the elastic modulus in the PET/EG, confirming the reinforcing action of the EG in the polymer matrix. Additionally, an increase in the elastic modulus was observed after LIPSS formation., This research was funded by the Spanish State Research Agency (AEI), grant numbers PID2020-119003GB-I00/MCIN/AEI/10.13039/501100011033, PID2019-107514GB-I00/AEI/10.13039/ 501100011033, PID2019-106125GB-I00/AEI/10.13039/501100011033, and Junta de Castilla y León (project number SA136P20). J.P.-R. thanks the Spanish Ministry of Universities (grant number FPU17/01859)