Results overview: Found 28 records in 0.02 seconds.
Articles, 27 records found
Research literature, 1 records found
Articles 27 records found  1 - 10nextend  jump to record:
1.
30 p, 705.6 KB Nanoscale mapping of thermal and mechanical properties of bare and metal-covered self-assembled block copolymer thin films / Sachat, Alexandros el (Institut Català de Nanociència i Nanotecnologia) ; Spièce, Jean (Lancaster University. Physics Department) ; Evangeli, Charalambos (Lancaster University. Physics Department) ; Robson, Alexander James (Lancaster University. Physics Department) ; Kreuzer, Martin (Institut Català de Nanociència i Nanotecnologia) ; Rodríguez Laguna, María del Rocío (Institut Català de Nanociència i Nanotecnologia) ; Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia) ; Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia) ; Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ; Kolosov, Oleg V. (Lancaster University. Physics Department) ; Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia)
We report on the structural, mechanical, and thermal analysis of 40 nm thick polystyrene-block-poly(ethylene oxide) (PS-b-PEO) block copolymer (BCP) films coated with evaporated chromium layers of different thicknesses (1, 2, and 5 nm). [...]
2020 - 10.1021/acsapm.9b00924
ACS Applied Polymer Materials, Vol. 2, issue 2 (Feb. 2020) , p. 487-496  
2.
6 p, 646.5 KB Electron beam lithography for direct patterning of MoS2on PDMS substrates / Jumbert Amblàs, Gil (Universitat Autònoma de Barcelona. Departament de Física) ; Placidi, Marcel (Institut de Recerca en Energia de Catalunya) ; Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia) ; Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ; Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia)
Precise patterning of 2D materials into micro- and nanostructures presents a considerable challenge and many efforts are dedicated to the development of processes alternative to the standard lithography. [...]
2021 - 10.1039/d1ra00885d
RSC advances, Vol. 11, Issue 32 (2021) , p. 19908-19913  
3.
8 p, 2.0 MB High-temperature silicon thermal diode and switch / Kasprzak, Maciej (Adam Mickiewicz University. Faculty of Physics) ; Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia) ; Zaleski, Karol (Adam Mickiewicz University. NanoBioMedical Centre (Poland)) ; Iatsunskyi, Igor (Adam Mickiewicz University. NanoBioMedical Centre (Poland)) ; Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia) ; Volz, Sebastian (University of Tokyo. Institute of Industrial Science) ; Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ; Graczykowski, Bartlomiej (Max Planck Institute for Polymer Research)
A thermal rectifier/diode is a nonreciprocal element or system that enables preferential heat transport in one direction. In this work we demonstrate a single-material thermal diode operating at high temperatures. [...]
2020 - 10.1016/j.nanoen.2020.105261
Nano Energy, Vol. 78 (Dec. 2020) , art. 105261  
4.
33 p, 4.8 MB Heat transport control and thermal characterization of low-dimensional mMaterials : a review / Sachat, Alexandros el (Institut Català de Nanociència i Nanotecnologia) ; Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia) ; Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ; Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia)
Heat dissipation and thermal management are central challenges in various areas of science and technology and are critical issues for the majority of nanoelectronic devices. In this review, we focus on experimental advances in thermal characterization and phonon engineering that have drastically increased the understanding of heat transport and demonstrated efficient ways to control heat propagation in nanomaterials. [...]
2021 - 10.3390/nano11010175
Nanomaterials, Vol. 11, issue 1 (Jan. 2021) , art. 175  
5.
6 p, 1.6 MB A novel contactless technique for thermal field mapping and thermal conductivity determination : two-laser Raman thermometry / Reparaz, Juan Sebastian (Institut Català de Nanociència i Nanotecnologia) ; Chávez Ángel, Emigdio (Universitat Autònoma de Barcelona. Departament de Física) ; Wagner, Markus R. (Institut Català de Nanociència i Nanotecnologia) ; Graczykowski, Bartlomiej (Institut Català de Nanociència i Nanotecnologia) ; Gomis Bresco, Jordi (Institut Català de Nanociència i Nanotecnologia) ; Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia) ; Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia)
We present a novel contactless technique for thermal conductivity determination and thermal field mapping based on creating a thermal distribution of phonons using a heating laser, while a second laser probes the local temperature through the spectral position of a Raman active mode. [...]
2014 - 10.1063/1.4867166
Review of Scientific Instruments, Vol. 85, issue 3 (March 2014) , art. 34901  
6.
13 p, 281.1 KB Modification of Akhieser mechanism in Si nanomembranes and thermal conductivity dependence of the Q-factor of high frequency nanoresonators / Chávez Ángel, Emigdio (Universitat Autònoma de Barcelona. Departament de Física) ; Zarate, R.A. (Universidad Católica del Norte. Departamento de Física) ; Gomis Bresco, Jordi (Institut Català de Nanociència i Nanotecnologia) ; Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia) ; Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia)
We present and validate a reformulated Akhieser model that takes into account the reduction of thermal conductivity due to the impact of boundary scattering on the thermal phonons' lifetime. We consider silicon nanomembranes with mechanical mode frequencies in the GHz range as textbook examples of nanoresonators. [...]
2014 - 10.1088/0268-1242/29/12/124010
Semiconductor Science and Technology, Vol. 29, issue 12 (Dec. 2014) , art. 124010  
7.
30 p, 1.1 MB Raman antenna effect from exciton-phonon coupling in organic semiconducting nanobelts / Wang, Mao (Norwegian University of Science and Technology) ; Gong, Yi (Norwegian University of Science and Technology) ; Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia) ; Svoboda, Ondrej (Brno University of Technology) ; Ballesteros, Belén (Institut Català de Nanociència i Nanotecnologia) ; Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ; Xiao, Senbo (Norwegian University of Science and Technology) ; Zhang, Zhiliang (Norwegian University of Science and Technology) ; He, Jianying (Norwegian University of Science and Technology)
The highly anisotropic interactions in organic semiconductors together with the soft character of organic materials lead to strong coupling between nuclear vibrations and exciton dynamics, which potentially results in anomalous electrical, optical and optoelectrical properties. [...]
2017 - 10.1039/c7nr07212k
Nanoscale, Vol. 9, Issue 48 (December 2017) , p. 19328-19336  
8.
9 p, 9.5 MB Elastic Properties of Few Nanometers Thick Polycrystalline MoS2 Membranes : A Nondestructive Study / Graczykowski, Bartlomiej (Max Planck Institute for Polymer Research) ; Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia) ; Placidi, Marcel (Institut de Recerca en Energia de Catalunya) ; Saleta Reig, David (Institut Català de Nanociència i Nanotecnologia) ; Kasprzak, M. (Adam Mickiewicz University in Poznan) ; Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia) ; Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia)
The performance gain-oriented nanostructurization has opened a new pathway for tuning mechanical features of solid matter vital for application and maintained performance. Simultaneously, the mechanical evaluation has been pushed down to dimensions way below 1 μm. [...]
2017 - 10.1021/acs.nanolett.7b03669
Nano letters, Vol. 17, Issue 12 (December 2017) , p. 7647-7651  
9.
33 p, 1.2 MB 2D Phononic Crystals : Progress and Prospects in Hypersound and Thermal Transport Engineering / Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia) ; Graczykowski, Bartlomiej (Max Planck Institute for Polymer Research) ; Maire, Jeremie (Institut Català de Nanociència i Nanotecnologia) ; Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia) ; Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ; Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia)
The central concept in phononics is the tuning of the phonon dispersion relation, or phonon engineering, which provides a means of controlling related properties such as group velocity or phonon interactions and, therefore, phonon propagation, in a wide range of frequencies depending on the geometries and sizes of the materials. [...]
2020 - 10.1002/adfm.201904434
Advanced functional materials, Vol. 30, Issue 8 (February 2020) , art. 1904434  
10.
9 p, 1.4 MB Crossover from ballistic to diffusive thermal transport in suspended graphene membranes / Sachat, Alexandros el (Institut Català de Nanociència i Nanotecnologia) ; Köenemann, F. (IBM Research) ; Menges, F. (University of Colorado. Department of Physics) ; Del Corro, Elena (Institut Català de Nanociència i Nanotecnologia) ; Garrido, Jose (Institut Català de Nanociència i Nanotecnologia) ; Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ; Alzina, Francesc (Institut Català de Nanociència i Nanotecnologia) ; Gotsmann, B. (IBM Research)
We report heat transport measurements on suspended single-layer graphene disks with radius of 150-1600 nm using a high-vacuum scanning thermal microscope. The results of this study revealed a radius-dependent thermal contact resistance between tip and graphene, with values between 1. [...]
2019 - 10.1088/2053-1583/ab097d
2D Materials, Vol. 6, Núm. 2 (April 2019) , art. 25034  

Articles : 27 records found   1 - 10nextend  jump to record:
Research literature 1 records found  
1.
118 p, 4.5 MB Characterization of nanostructured materials for thermal conduction and heat transfer control / Sachat, Alexandros el ; Alzina, Francesc, dir. ; Mompart Penina, Jordi, dir. ; Universitat Autònoma de Barcelona. Departament de Física
L'objectiu principal d'aquesta tesi és l'estudi de les propietats tèrmiques de materials nanoestructurats com un mitjà per controlar el transport de calor. Per a aquest propòsit s'han portat a terme mesures tèrmiques amb diferents tècniques experimentals a escales que cobreixen desenes de micròmetres fins a per sota de 50 nanòmetres. [...]
The main objective of this thesis is the study of thermal properties of nanostructured materials as a mean to control heat transport. For this purpose thermal measurements with different experimental techniques on length scales covering tens of microns to sub-50 have been performed. [...]

[Barcelona] : Universitat Autònoma de Barcelona, 2017.  

See also: similar author names
3 Alzina, F.
1 Alzina, Francesc,
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