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9 p, 6.1 MB |
Engineering Heat Transport Across Epitaxial Lattice-Mismatched van der Waals Heterointerfaces
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Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia) ;
Tsipas, Polychronis (National Center for Scientific Research "Demokritos") ;
Xiao, Peng (Institut Català de Nanociència i Nanotecnologia) ;
Ahmadi, Mohammad Taghi (University of Warwick) ;
Daaoub, Abdalghani H. S. (University of Warwick) ;
Sadeghi, Hatef (University of Warwick) ;
Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ;
Dimoulas, Athanasios (National Center for Scientific Research "Demokritos") ;
Sachat, Alexandros el (Institut Català de Nanociència i Nanotecnologia)
Artificially engineered 2D materials offer unique physical properties for thermal management, surpassing naturally occurring materials. Here, using van der Waals epitaxy, we demonstrate the ability to engineer extremely insulating thermal metamaterials based on atomically thin lattice-mismatched BiSe/MoSe superlattices and graphene/PdSe heterostructures with exceptional thermal resistances (70-202 m 2 K/GW) and ultralow cross-plane thermal conductivities (0. [...]
2023 -  10.1021/acs.nanolett.3c01280
Nano letters, Vol. 23, Issue 15 (August 2023) , p. 6883-6891
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14 p, 480.0 KB |
Tunable Heat-Flux Rectification in Graded Nanowires in Non-Linear Guyer-Krumhansl Regime
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Carlomagno, Isabella (University of Salerno) ;
Cimmelli, Vito Antonio (University of Basilicata) ;
Jou i Mirabent, David, 1953- (Universitat Autònoma de Barcelona. Departament de Física)
We study heat rectification in composition-graded nanowires, with nonlocal and nonlinear effects taken into account in a generalized Guyer-Krumhansl equation. Using a thermal conductivity dependent on composition and temperature, the heat equation is solved. [...]
2023 - 10.3390/nano13091442
Nanomaterials, Vol. 13, Issue 9 (May 2023) , art. 1442
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4.
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29 p, 1.5 MB |
Deconvolution of Phonon Scattering by Ferroelectric Domain Walls and Point Defects in a PbTiO3Thin Film Deposited in a Composition-Spread Geometry
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Bugallo, David (Universidade de Santiago de Compostela. Departamento de Química Física) ;
Langenberg, Eric (Universitat de Barcelona. Institut de Nanociència i Nanotecnologia) ;
Ferreiro-Vila, Elias (Centro Singular de Investigacion en Quimica Bioloxica e Materiais Moleculares (CiQUS)) ;
Smith, Eva H. (Cornell University. Department of Materials Science and Engineering) ;
Stefani, Christina (Institut Català de Nanociència i Nanotecnologia) ;
Batlle, Xavier (Universitat de Barcelona. Departament de Física de la Matèria Condensada) ;
Catalan, Gustau (Institut Català de Nanociència i Nanotecnologia) ;
Domingo Marimon, Neus (Institut Català de Nanociència i Nanotecnologia) ;
Schlom, Darrell G. (Kavli Institute at Cornell for Nanoscale Science) ;
Rivadulla, Francisco (Universidade de Santiago de Compostela. Departamento de Química Física)
We present a detailed analysis of the temperature dependence of the thermal conductivity of a ferroelectric PbTiO3 thin film deposited in a composition-spread geometry enabling a continuous range of compositions from ∼25% titanium deficient to ∼20% titanium rich to be studied. [...]
2021 - 10.1021/acsami.1c08758
ACS applied materials & interfaces, Vol. 13, Num. 38 (September 2021) , p. 45679-45685
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10 p, 1.1 MB |
Room temperature ionic liquids versus organic solvents as lithium-oxygen battery electrolytes
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Knipping, Etienne (Universitat Autònoma de Barcelona. Departament de Química) ;
Aucher, Christophe (Leitat Technological Center (Terrassa)) ;
Guirado López, Gonzalo (Universitat Autònoma de Barcelona. Departament de Química) ;
Aubouy, Laurent (Leitat Technological Center (Terrassa))
Imidazolium, pyrrolidinium and piperidinium room temperature ionic liquids (RTILs) are characterized to evaluate their thermal stability, ionic conductivity, viscosity, potential window and lithium solvation, which are key parameters for lithium-oxygen (Li-O) battery electrolytes. [...]
2018 - 10.1039/c8nj00449h
New journal of chemistry, Vol. 42, Issue 6 (March 2018) , p. 4693-4699
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10 p, 4.1 MB |
Microbial electrosynthesis of acetate from CO2 in three-chamber cells with gas diffusion biocathode under moderate saline conditions
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Dessì, Paolo (Universitat de Girona. Institut de Medi Ambient) ;
Buenaño-Vargas, Claribel (University of Galway. Microbiology Department) ;
Martínez-Sosa, Santiago (University of Galway. Ryan Institute) ;
Mills, Simon (University of Galway. Microbiology Department) ;
Trego, Anna (University of Galway. Microbiology Department) ;
Ijaz, Umer Z. (University of Glasgow. School of Engineering) ;
Pant, Deepak (Flemish Institute for Technological Research) ;
Puig, Sebastià (Universitat de Girona. Institut de Medi Ambient) ;
O'Flaherty, Vincent (University of Galway. Microbiology Department) ;
Farràs, Pau (University of Galway. Ryan Institute)
The industrial adoption of microbial electrosynthesis (MES) is hindered by high overpotentials deriving from low electrolyte conductivity and inefficient cell designs. In this study, a mixed microbial consortium originating from an anaerobic digester operated under saline conditions (∼13 g L−1 NaCl) was adapted for acetate production from bicarbonate in galvanostatic (0. [...]
2023 - 10.1016/j.ese.2023.100261
Environmental science and ecotechnology, Vol. 16 (October 2023) , art. 100261
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8 p, 829.7 KB |
Strong suppression of thermal conductivity in the presence of long terminal alkyl chains in low-disorder molecular semiconductors
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Selezneva, Ekaterina (University of Cambridge. Optoelectronics Group) ;
Vercouter, Alexandre (University of Mons. Laboratory for Chemistry of Novel Materials) ;
Schweicher, Guillaume (University of Cambridge. Optoelectronics Group) ;
Lemaur, Vincent (University of Mons. Laboratory for Chemistry of Novel Materials) ;
Broch, Katharina (Universität Tübingen. Institut für Angewandte Physik) ;
Antidormi, Aleandro (Institut Català de Nanociència i Nanotecnologia) ;
Takimiya, Kazuo (RIKEN Center for Emergent Matter Science) ;
Coropceanu, Veaceslav (Georgia Institute of Technology. School of Chemistry and Biochemistry) ;
Brédas, Jean-Luc (The University of Arizona. Department of Chemistry and Biochemistry) ;
Melis, Claudio (Universita di Cagliari. Dipartimento di Fisica) ;
Cornil, Jerome (University of Mons. Laboratory for Chemistry of Novel Materials) ;
Sirringhaus, Henning (University of Cambridge. Optoelectronics Group)
While the charge transport properties of organic semiconductors have been extensively studied over the recent years, the field of organics-based thermoelectrics is still limited by a lack of experimental data on thermal transport and of understanding of the associated structure-property relationships. [...]
2021 - 10.1002/adma.202008708
Advanced materials, Vol. 33, issue 37 (Sep. 2021) , art. 2008708
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8 p, 3.6 MB |
Anisotropic thermal conductivity of crystalline layered SnSe2
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Xiao, Peng (Universitat Autònoma de Barcelona. Departament de Física) ;
Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia) ;
Chaitoglou, Stefanos (National Center for Scientific Research Demokritos) ;
Sledzinska, Marianna (Institut Català de Nanociència i Nanotecnologia) ;
Dimoulas, Athanasios (National Center for Scientific Research Demokritos) ;
Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia) ;
Sachat, Alexandros el (Institut Català de Nanociència i Nanotecnologia)
The degree of thermal anisotropy affects critically key device-relevant properties of layered two-dimensional materials. Here, we systematically study the in-plane and cross-plane thermal conductivity of crystalline SnSe2 films of varying thickness (16-190 nm) and uncover a thickness-independent thermal conductivity anisotropy ratio of about ∼8. [...]
2021 - 10.1021/acs.nanolett.1c03018
Nano letters, Vol. 21, issue 21 (Nov. 2021) , p. 9172-9179
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14 p, 9.8 MB |
Highly Aligned Bacterial Nanocellulose Films Obtained During Static Biosynthesis in a Reproducible and Straightforward Approach
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Murugarren, Nerea (Institut de Ciència de Materials de Barcelona) ;
Roig-Sanchez, Soledad (Institut de Ciència de Materials de Barcelona) ;
Anton-Sales, Irene (Institut de Ciència de Materials de Barcelona) ;
Malandain, Nanthilde (Institut de Ciència de Materials de Barcelona) ;
Xu, Kai (Institut de Ciència de Materials de Barcelona) ;
Solano, Eduardo (ALBA Laboratori de Llum de Sincrotró) ;
Reparaz, Juan Sebastian (Institut de Ciència de Materials de Barcelona) ;
Laromaine, Anna (Institut de Ciència de Materials de Barcelona)
Bacterial nanocellulose (BNC) is usually produced as randomly-organized highly pure cellulose nanofibers films. Its high water-holding capacity, porosity, mechanical strength, and biocompatibility make it unique. [...]
2022 - 10.1002/advs.202201947
Advanced science, Vol. 9, Issue 26 (September 2022) , art. 2201947
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13 p, 2.7 MB |
Spectroscopic and thermal characterization of extra virgin olive oil adulterated with edible oils
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Chávez Ángel, Emigdio (Institut Català de Nanociència i Nanotecnologia) ;
Puertas, Blanca (Döehler Fraga. Departamento de Calidad) ;
Kreuzer, Martin (ALBA Laboratori de Llum de Sincrotró) ;
Soliva Fortuny, Robert (Universitat de Lleida. Departament de Tecnologia d'Aliments) ;
Ng, Ryan C. (Institut Català de Nanociència i Nanotecnologia) ;
Castro-Alvarez, Alejandro (Universidad de La Frontera. Centro de Excelencia en Medicina Traslacional (Chile)) ;
Sotomayor Torres, Clivia M. (Institut Català de Nanociència i Nanotecnologia)
The substitution of extra virgin olive oil with other edible oils is the primary method for fraud in the olive-oil industry. Developing inexpensive analytical methods for confirming the quality and authenticity of olive oils is a major strategy towards combatting food fraud. [...]
2022 - 10.3390/foods11091304
Foods, Vol. 11, Issue 9 (May 2022) , art. 1304
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