Strontium hexaferrite platelets: a comprehensive soft X-ray absorption and Mössbauer spectroscopy study

Strontium hexaferrite platelets: a comprehensive soft X-ray absorption and Mössbauer spectroscopy study

by | Nov 19, 2019 | Articles, Highlights

Author: G. D. Soria, P. Jenus, J. F. Marco, A. Mandziak, M. Sanchez-Arenillas, F. Moutinho, J. E. Prieto, P. Prieto, J. Cerdá, C. Tejera-Centeno, S. Gallego, M. Foerster, L. Aballe, M. Valvidares, H. B. Vasili, E. Pereiro, A. Quesada, and J. de la Figuera.

Scientific Reports. 2019

Abstract:
Platelets of strontium hexaferrite (SrFe12O19, SFO), up to several micrometers in width, and tens of nanometers thick have been synthesized by a hydrothermal method. They have been studied by a combination of structural and magnetic techniques, with emphasis on Mössbauer spectroscopy…

Article
Plasma Enabled Conformal and Damage Free Encapsulation of Fragile Molecular Matter: from Surface‐Supported to On‐Device Nanostructures

Plasma Enabled Conformal and Damage Free Encapsulation of Fragile Molecular Matter: from Surface‐Supported to On‐Device Nanostructures

by | Nov 19, 2019 | Articles, Highlights

Author: Maria Alcaire, Francisco J. Aparicio, José Obrero, Carmen López‐Santos, Francisco J. Garcia‐Garcia, Juan R. Sánchez‐Valencia, Fabián Frutos, Kostya (Ken) Ostrikov, Ana Borrás, Angel Barranco.

Advanced Functional Materials 2019

Abstract:
Damage‐free encapsulation of molecular structures with functional nanolayers is crucial to protect nanodevices from environmental exposure. With nanoscale electronic, optoelectronic, photonic, sensing, and other nanodevices based on atomically thin and fragile organic matter shrinking in size…

Article
Physically Unclonable Functions Based on Single-Walled Carbon Nanotubes: A Scalable and Inexpensive Method toward Unique Identifiers

Physically Unclonable Functions Based on Single-Walled Carbon Nanotubes: A Scalable and Inexpensive Method toward Unique Identifiers

by | Nov 17, 2019 | Articles, Highlights

Author: Enrique Burzurí, Daniel Granados, Emilio M. Pérez

ACS Appl. Nano Mater. (2019)

Abstract:
A physically unclonable function (PUF) is a physical system that cannot be reproduced or predicted and therefore is a good basis on which to build security and anticounterfeiting applications. The unclonability of PUFs typically stems from the randomness induced…

Article
Liquid switchable radial polarization converters made of sculptured thin films

Liquid switchable radial polarization converters made of sculptured thin films

by | Nov 17, 2019 | Articles, Highlights

Author: ManuelOliva-Ramírez, Victor J.Rico, JorgeGil-Rostra, OriolArteaga, EnricBertran, RosalíaSerna, Agustín R.González-Elipe, Francisco Yubero

Applied Surface Science (2019)

Abstract:
A radial polarization converter is a super-structured optical retarder that converts a conventional linearly polarized light beam into a structured beam with radial or azimuthal polarization. We present a new type of these sophisticated optical elements, which is made of porous nanostructured…

Article
Prevalence of non-aromatic carbonaceous molecules in the inner regions of circumstellar envelopes

Prevalence of non-aromatic carbonaceous molecules in the inner regions of circumstellar envelopes

by | Nov 17, 2019 | Articles, Highlights

Author:

Lidia Martínez, Gonzalo Santoro, Pablo Merino, Mario Accolla, Koen Lauwaet, Jesús Sobrado, Hassan Sabbah, Ramón J. Pelaez, Victor J. Herrero, Isabel Tanarro, Marcelino Agúndez, Alberto Martín-Jimenez, Roberto Otero, Gary J. Ellis, Christine Joblin, José Cernicharo and José A. Martín-Gago 

Nature Astronomy (2019)

Abstract:
Evolved stars are foundries of chemical complexity, gas and dust that provide the building blocks of planets and life, and dust nucleation first occurs in their photosphere. The circumstellar regions enveloping these stars, despite their importance, remain hidden to many observations, and…

Article
Coexistence of Elastic Modulations in the Charge Density Wave State of 2H-NbSe2

Coexistence of Elastic Modulations in the Charge Density Wave State of 2H-NbSe2

by | Oct 9, 2019 | Highlights

Author: Guster B , Rubio-Verdú C, Robles R , Zaldívar J, Dreher P, Pruneda M, Silva-Guillén JA, Choi DJ, Pascual JI, Ugeda MM, Ordejón P, and Canadell E.

Nano Letters (ASAP). 2019

Abstract:
When a material undergoes a phenomenon called charge density wave both its atomic lattice and electronic density distorts coherently below a certain temperature. In this work, we demonstrate that these distortions may appear…

Article