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https://www.readbyqxmd.com/read/28644668/strong-light-matter-interactions-in-single-open-plasmonic-nanocavities-at-the-quantum-optics-limit
#1
Renming Liu, Zhang-Kai Zhou, Yi-Cong Yu, Tengwei Zhang, Hao Wang, Guanghui Liu, Yuming Wei, Huanjun Chen, Xue-Hua Wang
Reaching the quantum optics limit of strong light-matter interactions between a single exciton and a plasmon mode is highly desirable, because it opens up possibilities to explore room-temperature quantum devices operating at the single-photon level. However, two challenges severely hinder the realization of this limit: the integration of single-exciton emitters with plasmonic nanostructures and making the coupling strength at the single-exciton level overcome the large damping of the plasmon mode. Here, we demonstrate that these two hindrances can be overcome by attaching individual J aggregates to single cuboid Au@Ag nanorods...
June 9, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28627501/two-dimensional-hybrid-layered-materials-strain-engineering-on-the-band-structure-of-mos2-wse2-hetero-multilayers
#2
Kunming Gu, Sheng Yu, Kwesi Eshun, Haiwen Yuan, Huixian Ye, Jiaoning Tang, Dimitris E Ioannou, Changshi Xiao, Hui Wang, Qiliang Li
In this paper, we report a comprehensive modeling and simulation study of constructing hybrid layered materials by alternately stacking MoS2 and WSe2 monolayers. Such hybrid MoS2/WSe2 hetero-multilayers exhibited direct bandgap semiconductor characteristics with bandgap energy (Eg) in a range of 0.45eV - 0.55eV at room temperature, very attractive for optoelectronics (wavelength range 2.5m . 2.75m) based on thicker two-dimensional (2D) materials. It was also found that the interlayer distance has a significant impact on the electronic properties of the hetero-multilayers, for example, a five orders of magnitude change in the conductance was observed...
June 19, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28627129/co-based-active-species-molecularly-immobilized-on-carbon-nanotubes-for-oxygen-reduction-reaction
#3
Sujin Kim, Dawoon Jang, Joonwon Lim, Junghoon Oh, Sang Ouk Kim, Sungjin Park
Hybrid systems that molecule-based active species are combined with nanoscale materials may offer valuable routes to enhance the catalytic performances for electrocatalytic reactions. Development of rationally designed, cost-effective efficient catalysts for oxygen reduction reaction (ORR) is a crucial challenge for fuel cell and metal-air battery applications. In this work, we report a novel hybrid ORR catalyst material synthesized by a well-defined reaction pathway between Co-based organometallic molecules and N-doped multiwalled carbon nanotubes (MWCNT) at room temperature...
June 18, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28623454/-erratum-to-hybrid-operating-rooms-versus-conventional-operating-rooms-economic-comparisons-in-vascular-surgery-using-the-example-of-endovascular-aneurysm-repair
#4
N Attigah, S Demirel, M Hakimi, H Bruijnen, O Schöffski, A Müller, U Geis, D Böckler
No abstract text is available yet for this article.
June 16, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
https://www.readbyqxmd.com/read/28622726/efficient-covalent-modification-of-multiwalled-carbon-nanotubes-with-diazotized-dyes-in-water-at-room-temperature
#5
Asma Bensghaïer, Stephanie Lau-Truong, Mahamadou Seydou, Aazdine Lamouri, Eric Leroy, Matej Micusik, Klaudia Forro, Mohamed Beji, Jean Pinson, Maria Omastova, Mohamed Mehdi Chehimi
Tetrafluoroborate salts of diazotized Azure A (AA-N2+), Neutral Red (NR-N2+) and Congo Red (CR-N2+) dyes were prepared and reacted with multiwalled carbon nanotubes (MWCNTs) at room temperature, in water without any reducing agent. The as-modified MWCNTs were examined by IRATR, Raman spectroscopy, XPS, TGA, TEM and cyclic voltammetry. The diazonium band located at 2350 cm-1 in the diazotized dye IR spectra vanished after attachment to the nanotubes whilst Raman D/G peak ratio slightly increased after dye covalent attachment at high initial diazonium/CNT mass ratio...
June 16, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28617668/flexible-room-temperature-formaldehyde-sensors-based-on-rgo-film-and-rgo-mos2-hybrid-film
#6
Xian Li, Jiang Wang, Dan Xie, Jianlong Xu, Yi Xia, Weiwei Li, Lan Xiang, Zhemin Li, Shiwei Xu, Sridhar Komarneni
Gas sensors based on reduced graphene oxide (rGO) films and rGO/MoS2 hybrid films were fabricated on polyethylene naphthalate (PEN) substrates by a simple self-assembly method, which yielded flexible devices for detection of formaldehyde (HCHO) at room temperature. The sensing test results indicated that the rGO and rGO/MoS2 sensors were highly sensitive and fully recoverable to ppm-level of HCHO. The bending and fatigue test results revealed that the sensors were also mechanically robust, durable and effective for long-term...
June 15, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28617612/effect-of-urea-on-g-quadruplex-stability
#7
Lusine Aslanyan, Jordan Ko, Byul G Kim, Ishkhan Vardanyan, Yeva B Dalyan, Tigran V Chalikian
G-quadruplexes represent a class of noncanonical nucleic acid structures implicated in transcriptional regulation, cellular function, and disease. An understanding of the forces involved in stabilization/destabilization of the G-quadruplex conformation relative to the duplex or single-stranded conformation is a key to elucidating the biological role of G-quadruplex-based genomic switches and the quest for therapeutic means for controlled induction or suppression of a G-quadruplex at selected genomic loci. Solute-solvent interactions provide a ubiquitous and, in many cases, the determining thermodynamic force in maintaining and modulating the stability of nucleic acids...
June 15, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28616298/imaging-guided-thoracoscopic-resection-of-a-ground-glass-opacity-lesion-in-a-hybrid-operating-room-equipped-with-a-robotic-c-arm-ct-system
#8
Chen-Ping Hsieh, Ming-Ju Hsieh, Hsin-Yueh Fang, Yin-Kai Chao
The intraoperative identification of small pulmonary nodules through video-assisted thoracoscopic surgery remains challenging. Although preoperative CT-guided nodule localization is commonly used to detect tumors during video-assisted thoracoscopic surgery (VATS), this approach carries inherent risks. We report the case of a patient with stage I lung cancer presenting as an area of ground-glass opacity (GGO) in the right upper pulmonary lobe. He successfully underwent a single-stage, CT-guided localization and removal of the pulmonary nodule within a hybrid operating room (OR) equipped with a robotic C-arm...
May 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28614651/stabilization-of-garnet-liquid-electrolyte-interface-using-superbase-additives-for-hybrid-li-batteries
#9
Biyi Xu, Huanan Duan, Hezhou Liu, Chang An Wang, Shengwen Zhong
To improve the solid-electrolyte/electrode interface compatibility, we have proposed the concept of hybrid electrolyte by including a small amount of liquid electrolyte in between. In this work, n-BuLi, a superbase, has been found to significantly improve the cycling performance of LiFePO4/Li hybrid cells containing Li7La3Zr1.5Ta0.5O12 (LLZT) and conventional carbonate-based liquid electrolyte. The modified cells have been cycled for 400 cycles at 100 and 200 μA cm(-2) at room temperature, indicating excellent solid/liquid electrolyte interface stability...
June 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28603944/inorganic-macroion-induced-bicontinuous-block-copolymer-nanocomposites-with-enhanced-conductivity-and-modulus
#10
Liying Zhang, Tingting Cui, Xiao Cao, Chengji Zhao, Quan Chen, Lixin Wu, Haolong Li
A facile and electrostatically-driven approach has been developed to prepare bicontinuous polymer nanocomposites, through the polyoxometalate (POM) macroion-induced phase transition of PS-b-P2VP from an initial lamellar phase to a stable bicontinuous phase. The multi-charged POMs can electrostatically crosslink P2VP blocks and lead to bicontinuous phases in which the POM-hybrid conductive domains occupy a large volume fraction more than 50 %. Furthermore, POMs can serve as both high proton conductors and nanoenhancers, endowing the bicontinuous nanocomposites with a conductivity of 0...
June 12, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28598486/temperature-dependent-nir-emitting-lanthanide-pmo-silica-hybrid-materials
#11
Anna M Kaczmarek, Dolores Esquivel, Judith Ouwehand, Pascal Van Der Voort, Francisco J Romero-Salguero, Rik Van Deun
Two materials - a mesoporous silica (MS) and a periodic mesoporous organosilica (PMO) functionalized with dipyridyl-pyridazine (dppz) units were grafted with near-infrared (NIR) emitting lanthanide (Nd(3+), Er(3+), Yb(3+)) complexes in an attempt to obtain hybrid NIR emitting materials. The parent materials: dppz-vSilica and dppz-ePMO were prepared by a hetero Diels-Alder reaction between 3,6-di(2-pyridyl)-1,2,4,5-tetrazine (dptz) and the double bonds of either ethenylene-bridged PMO (ePMO) or vinyl-silica (vSilica) and subsequent oxidation...
June 9, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28595405/phase-transformations-upon-doping-in-wo3
#12
Wennie Wang, Anderson Janotti, Chris G Van de Walle
High levels of doping in WO3 have been experimentally observed to lead to structural transformation towards higher symmetry phases. We explore the structural phase diagram with charge doping through first-principles methods based on hybrid density functional theory, as a function of doping the room-temperature monoclinic phase transitions to the orthorhombic, tetragonal, and finally cubic phase. Based on a decomposition of energies into electronic and strain contributions, we attribute the transformation to a gain in energy resulting from a lowering of the conduction band on an absolute energy scale...
June 7, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28572679/ultra-large-non-volatile-modulation-of-magnetic-moments-in-pbzr0-2ti0-8o3-mgo-la0-7sr0-3mno3-heterostructure-at-room-temperature-via-interfacial-polarization-mediation
#13
Q Liu, J Miao, Robert Reeve, K K Meng, X G Xu, Y Wu, Y Jiang
Multiferroic hybrid structures PbZr0.2Ti0.8O3 (PZT)/La0.7Sr0.3MnO3 (LSMO) and PZT/MgO/LSMO were epitaxially deposited on (001) Nb:SrTiO3 crystals. Crystallinity and ferroelectric domain structures were investigated for the PZT/LSMO heterostructure. Interestingly, relatively high non-volatile magnetoelectric coupling effects were observed in both heterostructures at room temperature. The change of chemical valence for Mn and Ti at the PZT/MgO/LSMO interface may play a dominant role rather than external strain or orbital reconstruction, which lead to a large modulation of the magnetization...
June 1, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28571365/first-principle-simulations-of-electronic-structure-in-semicrystalline-polyethylene
#14
A Moyassari, M Unge, M S Hedenqvist, U W Gedde, F Nilsson
In order to increase our fundamental knowledge about high-voltage cable insulation materials, realistic polyethylene (PE) structures, generated with a novel molecular modeling strategy, have been analyzed using first principle electronic structure simulations. The PE structures were constructed by first generating atomistic PE configurations with an off-lattice Monte Carlo method and then equilibrating the structures at the desired temperature and pressure using molecular dynamics simulations. Semicrystalline, fully crystalline and fully amorphous PE, in some cases including crosslinks and short-chain branches, were analyzed...
May 28, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28569842/giant-barocaloric-effect-in-the-ferroic-organic-inorganic-hybrid-tpra-mn-dca-3-perovskite-under-easily-accessible-pressures
#15
Juan M Bermúdez-García, Manuel Sánchez-Andújar, Socorro Castro-García, Jorge López-Beceiro, Ramón Artiaga, María A Señarís-Rodríguez
The fast growing family of organic-inorganic hybrid compounds has recently been attracting increased attention owing to the remarkable functional properties (magnetic, multiferroic, optoelectronic, photovoltaic) displayed by some of its members. Here we show that these compounds can also have great potential in the until now unexplored field of solid-state cooling by presenting giant barocaloric effects near room temperature already under easily accessible pressures in the hybrid perovskite [TPrA][Mn(dca)3] (TPrA: tetrapropylammonium, dca: dicyanamide)...
June 1, 2017: Nature Communications
https://www.readbyqxmd.com/read/28569064/full-spectral-fine-tuning-visible-emissions-from-cation-hybrid-cs1-mfampbx3-x-cl-br-and-i-0-%C3%A2-m-%C3%A2-1-quantum-dots
#16
Daqin Chen, Xiao Chen, Zhongyi Wan, Gaoliang Fang
Full-color visible emissions are particularly crucial for applications in displays and lightings. In this work, we developed a facile room-temperature ligand-assisted supersaturated recrystallization synthesis of monodisperse, cubic structure Cs1-mFAmPbX3 (X = Cl, Br, and I or their mixtures Cl/Br and Br/I, 0 ≤ m ≤ 1) hybrid perovskite quantum dots (QDs). Impressively, cation substitution of Cs(+) by FA(+) was beneficial in finely tuning the band gap and in exciton recombination kinetics, improving the structural stability, and raising the absolute quantum yields up to 85%...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28549958/a-novel-antegrade-approach-for-simultaneous-carotid-endarterectomy-and-angioplasty-of-proximal-lesions-in-patients-with-tandem-stenosis-of-supraaortic-arch-vessels
#17
Djordje Radak, Slobodan Tanaskovic, Dragan Sagic, Zelimir Antonic, Predrag Gajin, Srdjan Babic, Mihailo Neskovic, Predrag Matic, Vladimir Kovacevic, Dragoslav Nenezic, Nenad Ilijevski
INTRODUCTION: To date all published studies analyzing simultaneous treatment of carotid and proximal atherosclerotic lesions are describing retrograde approach and several technical variations. In the presented study, for the first time antegrade approach is described for simultaneous carotid endarterectomy (CEA) and associated brachiocephalic trunk (BCT) or common carotid artery (CCA) angioplasty in the hybrid operating room. METHODOLOGY: From January 2012 till January 2016 antegrade hybrid procedures were performed in 18 patients...
May 23, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28545211/nano-enabling-of-strong-base-ion-exchange-media-via-a-room-temperature-aluminum-hydr-oxide-synthesis-method-to-simultaneously-remove-nitrate-and-fluoride
#18
Jasmina Markovski, Jose Garcia, Kiril D Hristovski, Paul Westerhoff
This study demonstrated a new room-temperature method for synthesizing aluminum (hydr)oxide material inside the pores of strong-base ion-exchange resin to fabricate a novel class of hybrid media capable of simultaneously removing nitrate and fluoride as model groundwater contaminants. The aluminum (hydr)oxide hybrid media was fabricated by reducing aluminum ion precursors with borohydride within ion-exchange resin at room temperature, followed by exposure to environmental oxygen. The hybrid media was characterized, and its performance to simultaneously remove nitrate and fluoride was determined in simple and complex water matrices using short-bed column tests operated under conditions realistic for point-of-use systems...
December 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28535913/patient-doses-and-occupational-exposure-in-a-hybrid-operating-room
#19
C Andrés, H Pérez-García, M Agulla, R Torres, D Miguel, A Del Castillo, C M Flota, D Alonso, J de Frutos, C Vaquero
PURPOSE: This study aimed to characterize the radiation exposure to patients and workers in a new vascular hybrid operating room during X-ray-guided procedures. METHODS: During one year, data from 260 interventions performed in a hybrid operating room equipped with a Siemens Artis Zeego angiography system were monitored. The patient doses were analysed using the following parameters: radiation time, kerma-area product, patient entrance reference point dose and peak skin dose...
May 2017: Physica Medica: PM
https://www.readbyqxmd.com/read/28534400/opto-valleytronic-spin-injection-in-monolayer-mos2-few-layer-graphene-hybrid-spin-valves
#20
Yunqiu Kelly Luo, Jinsong Xu, Tiancong Zhu, Guanzhong Wu, Elizabeth J McCormick, Wenbo Zhan, Mahesh R Neupane, Roland K Kawakami
Two-dimensional (2D) materials provide a unique platform for spintronics and valleytronics due to the ability to combine vastly different functionalities into one vertically stacked heterostructure, where the strengths of each of the constituent materials can compensate for the weaknesses of the others. Graphene has been demonstrated to be an exceptional material for spin transport at room temperature; however, it lacks a coupling of the spin and optical degrees of freedom. In contrast, spin/valley polarization can be efficiently generated in monolayer transition metal dichalcogenides (TMD) such as MoS2 via absorption of circularly polarized photons, but lateral spin or valley transport has not been realized at room temperature...
June 14, 2017: Nano Letters
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