Results 111 to 120 of about 122,114 (294)

Tuning the Electronic Structure and Spin State of Fe─N─C Catalysts Using an Axial Oxygen Ligand and Fe Clusters for High‐Efficiency Rechargeable Zinc–Air Batteries

Advanced Functional Materials, EarlyView.
A FeN4─O/Clu@NC‐0.1Ac catalyst containing atomically‐dispersed FeN4─O sites (medium‐spin Fe2+) and Fe clusters delivered a half‐wave potential of 0.89 V for ORR and an overpotential of 330 mV at 10 mA cm−2 for OER in 0.1 m KOH. When the catalyst was used in a rechargeable Zn–air battery, a power density of 284.5 mW cm−2 was achieved with excellent ...
Yongfang Zhou, Yu Mao, Mengyao Chang, Ziyun Wang, Wenke Xie, Cuizhu Ye, Shanghai Wei, Lars Thomsen, Geoffrey I. N. Waterhouse   +8 more
wiley   +1 more source

The OH-F substitution in synthetic pargasite at 1.5 kbar, 850 °C.

, 2000
Amphiboles were synthesized at 1.5 kbar PH2O and 850 °C along the join pargasite-fluoropargasite. Structural variations in the amphibole as a function of F have been characterized by a combination of SEM-EDS, X-ray powder diffraction, and infrared ...
C. Hawthorne, Franck, Della Ventura, Giancarlo, Robert, Jean-Louis, Welch, Mark D.   +3 more
core   +1 more source

Raman Microscopy at the Organic–Inorganic Interfaces in Human Calcified Aortic Valves Shows the Co‐Existence of Whitlockite Crystals and Carbonated Hydroxyapatite‐Mineralized Collagen Fibrils

Advanced Functional Materials, EarlyView.
This study advances our understanding of aortic valve stenosis by capturing spatially resolved chemical and structural changes at the nanoscale. The findings highlight the potential of combined Raman and electron microscopy for understanding calcification mechanisms across diverse tissue types.
Robin H. M. Van der Meijden, Carolien T. A Kuster, Amber van Broekhoven, Raphaela Allgayer, Luco Rutten, Rona Roverts, Marta Cerruti, Elena Macías‐Sánchez, Jan Hein Cornel, Salloua el Messaoudi, Anat Akiva, Nico Sommerdijk   +11 more
wiley   +1 more source

Critical issues of double-metal layer coating on FBG for applications at high temperatures [PDF]

, 2019
Use of fiber Bragg gratings (FBGs) to monitor high temperature (HT) applications is of great interest to the research community. Standard commercial FBGs can operate up to 600 ∘ C.
Caponero, M. A., CIRO ZULETA, Erwin, dell'Era, A., Felli, F., Kalinowski, H. J., Lupi, C., Vendittozzi, C.   +6 more
core   +1 more source

Germanane Quantum Dots Promote Metabolic Reprogramming of Immune Cells Toward Regulatory T Cells and Suppress Inflammation In Vitro and In Vivo

Advanced Functional Materials, EarlyView.
Metabolic changes in immune cells direct the phenotype and function of the host immune system. Smart nanomaterials must target metabolic pathways to direct immune cell fate. This study reports the fabrication and first application of germanane quantum dots (GeHQDs) to modulate inflammation in vitro and in vivo.
Abhay Srivastava, Alireza Rafieerad, Weiang Yan, Keshav Narayan Alagarsamy, Qingdong Guan, Leena Regi Saleth, Michel Aliani, Sanjiv Dhingra   +7 more
wiley   +1 more source

Pore Size Effects of Mesoporous N‐Doped Carbon Nanospheres as Advanced Support Material on the Activity of Molybdenum Sulfide Catalysts for the Hydrogen Evolution Reaction

Advanced Functional Materials, EarlyView.
By tuning the pore size of mesoporous N‐doped carbon (MPNC) nanospheres as support material for molybdenum sulfide, the electrochemical activity of the composite material for the hydrogen evolution reaction can be optimized. An ideal MPNC pore size of 60 nm allows a high number of molybdenum sulfide active sites while maintaining efficient proton and ...
Niklas Ortlieb, Christian Völker, Lars Guggolz, Anna Fischer   +3 more
wiley   +1 more source

MEV COMO FERRAMENTA NA DETERMINAÇÃO DE SAIS FORMADOS EM UMA LAGOA SALINA NO PANTANAL. ESTUDO DE CASO

Geochimica Brasiliensis, 2019
O presente trabalho se reveste do estudo de sais formados “in situ” em uma lagoa salina, localizada no Pantanal, na sub-região da Nhecolândia. O objetivo foi caracterizar os sais coletados nas bordas de uma salina, fornecendo dados que auxiliem no ...
Mario Rubens Gomes Santos, Joel Barbujiani Sígolo   +1 more
doaj   +1 more source

SEM-EDS Protocol V1 v1

This protocol outlines the methodology for conducting Scanning Electron Microscopy (SEM) and Energy-Dispersive X-ray Spectroscopy (EDS) analysis of laser-inscribed graphene (LIG) electrodes using a SU5000 microscope. The procedure details the preparation of LIG electrodes, their imaging under SEM, and subsequent elemental analysis via EDS. By combining
openaire   +1 more source

Combining cryo-scanning electron microscopy, ìX-ray fluorescence spectroscopy and X-ray absorption spectroscopy to probe copper speciation in a bamboo [PDF]

, 2011
Copper uptake, localization and speciation were studied in hydroponically-grown Phyllostachys fastuosa plants at different increasing concentrations of Cu (0.2, 1.5 and 100 ?M). The spatial distribution and speciation of Cu in tissues of the bamboos were
Collin, Blanche, Doelsch, Emmanuel, Keller, Catherine, Meunier, Jean-Dominique, Panfili, Frédéric   +4 more
core  

Structure–Transport–Ion Retention Coupling for Enhanced Nonvolatile Artificial Synapses

Advanced Functional Materials, EarlyView.
Nitrogen incorporation into the conjugated backbone of donor–acceptor polymers enables efficient charge transfer and deep ion embedding in organic electrochemical synaptic transistors (OESTs). This molecular‐level design enhances non‐volatile synaptic properties, providing a new strategy for developing high‐performance and reliable neuromorphic devices.
Donghwa Lee, Jinsung Kim, Sein Chung, Junho Sung, Chaeyeon Han, Eunho Lee   +5 more
wiley   +1 more source