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https://www.readbyqxmd.com/read/28534400/opto-valleytronic-spin-injection-in-monolayer-mos2-few-layer-graphene-hybrid-spin-valves
#1
Yunqiu Kelly Luo, Jinsong Xu, Tiancong Zhu, Guanzhong Wu, Elizabeth Joan 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...
May 23, 2017: Nano Letters
https://www.readbyqxmd.com/read/28530102/manipulating-coherent-plasmon-exciton-interaction-in-single-silver-nanorod-on-monolayer-wse2
#2
Di Zheng, Shunping Zhang, Qian Deng, Meng Kang, Peter Nordlander, Hongxing Xu
Strong coupling between plasmons and excitons in nanocavities can result in the formation of hybrid plexcitonic states. Understanding the dispersion relation of plexcitons is important both for fundamental quantum science and for applications including optoelectronics and nonlinear optics devices. The conventional approach, based on statistics over different nanocavities suffers from large inhomogeneities from the samples, owing to the non-uniformity of nanocavities and the lack of control over the locations and orientations of the excitons...
May 22, 2017: Nano Letters
https://www.readbyqxmd.com/read/28527967/feasibility-and-safety-of-the-transbronchial-access-tool-for-peripheral-pulmonary-nodule-and-mass
#3
Mark R Bowling, Craig Brown, Carlos J Anciano
BACKGROUND: Navigational bronchoscopy and other imaging modalities have improved the ability to evaluate pulmonary nodules/mass. Many of these lesions are located outside the bronchial airway and are difficult to access even with these devices. The Transbronchial Access Tool (Medtronic, Minneapolis, MN) allows the bronchoscopist to create a pathway from the bronchial airway, across the lung parenchyma, and into the target lesion. We are reporting the feasibility and safety of this new device...
May 17, 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28521353/intraoperative-angiography-for-arteriovenous-malformation-resection-in-the-prone-and-lateral-positions-using-upper-extremity-arterial-access
#4
Erez Nossek, David J Chalif, Razvan Buciuc, Eric J Gandras, Erich G Anderer, Sal Insigna, Amir R Dehdashti, Avi Setton
BACKGROUND: Intraoperative angiography is routinely utilized for aneurysms and arteriovenous malformations (AVMs) to verify complete occlusion and resection. Surgery for spinal and posterior fossa neurovascular lesions is usually performed in prone position. Intraoperative angiography in the prone position is challenging and there is no standardized protocol for this procedure. OBJECTIVE: To describe our experience with intraoperative angiography in the prone and lateral positions, using upper extremity arterial access...
June 1, 2017: Operative Neurosurgery (Hagerstown, Md.)
https://www.readbyqxmd.com/read/28516365/clipping-of-ruptured-intracranial-aneurysms-in-a-hybrid-room-environment-a-case-control-study
#5
Philipp Dammann, Max Jägersberg, Zsolt Kulcsar, Ivan Radovanovic, Karl Schaller, Philippe Bijlenga
BACKGROUND: Hybrid room treatment (HRT) provides the surgeon immediate intraoperative angiography control of aneurysm occlusion and vessel patency. Since it is relatively resource demanding, in clinical routine HRT is reserved for elective cases. However, since its introduction in our department in 2008, several random cases of ruptured intracranial aneurysms (IAs) have been treated in the HR. This study aims to compare the clinical and radiological outcomes of these cases with cases treated conventionally using a matched pair analysis...
May 17, 2017: Acta Neurochirurgica
https://www.readbyqxmd.com/read/28515515/the-parturient-in-the-interventional-radiology-suite-new-frontier-in-obstetric-anaesthesia
#6
REVIEW
Tasneem Dhansura, Nabila Shaikh
The anaesthesiologist's presence during interventional radiology (IR) is increasing due to increasingly ill patients and intricate procedures. The management of a parturient in IR suite is complex in terms of logistics of an unfamiliar procedure in an unfamiliar area. The literature available is largely written by radiologists with little attention paid to anaesthetic details and considerations. In the Indian scenario, in the absence of hybrid operating rooms (ORs), logistics involve transport of a parturient back and forth between the IR suite and the OR...
April 2017: Indian Journal of Anaesthesia
https://www.readbyqxmd.com/read/28513731/ag-au-nanoprism-metal-organic-framework-based-paper-for-extending-the-glucose-sensing-range-in-human-serum-and-urine
#7
Pin-Hsuan Huang, Chia Ping Hong, Jian Fan Zhu, Tzu-Ting Chen, Chu-Ting Chan, Yu-Chien Ko, Tien-Li Lin, Zheng-Bang Pan, Ning-Kuei Sun, Ying-Chu Wang, Jong-Jheng Luo, Tzu-Chieh Lin, Chia-Cheng Kang, Jing-Jong Shyue, Mei-Lin Ho
In this work, we present a Ag@Au nanoprism-metal-organic framework-paper based glucose sensor for rapid, sensitive, single-use and quantitative glucose determination in human serum. To achieve painless measurement of glucose with a non-invasive detection methodology, this biosensor was further tested in human urine. In this approach, a new hybrid-Ag@Au nanoprism loaded in close proximity to micrometer sized coordination polymers as phosphorescent luminophores significantly enhanced the emission intensity due to metal-enhanced phosphorescence and worked as reaction sites to support more dissolved oxygen...
May 17, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28509542/trimethylsulfonium-lead-triiodide-an-air-stable-hybrid-halide-perovskite
#8
Andreas Kaltzoglou, Constantinos C Stoumpos, Athanassios G Kontos, Georgios K Manolis, Kyriakos Papadopoulos, Kyriaki G Papadokostaki, Vasilis Psycharis, Chiu C Tang, Young-Kwang Jung, Aron Walsh, Mercouri G Kanatzidis, Polycarpos Falaras
We report on the synthesis, characterization, and optoelectronic properties of the novel trimethylsulfonium lead triiodide perovskite, (CH3)3SPbI3. At room temperature, the air-stable compound adopts a hexagonal crystal structure with a 1D network of face-sharing [PbI6] octahedra along the c axis. UV-vis reflectance spectroscopy on a pressed pellet revealed a band gap of 3.1 eV, in agreement with first-principles calculations, which show a small separation between direct and indirect band gaps. Electrical resistivity measurements on single crystals indicated that the compound behaves as a semiconductor...
May 16, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28504794/reactive-oligo-dimethylsiloxane-mesogens-and-their-nanostructured-thin-films
#9
K Nickmans, Ph Leclère, J Lub, D J Broer, A P H J Schenning
Oligo(dimethylsiloxane)-based reactive mesogens were prepared and shown to form room-temperature smectic phases which were 'frozen-in' by photopolymerization. Homeotropically aligned, nanostructured thin films were obtained by spincoating, and micropatterning was demonstrated. These hybrid reactive mesogens are suitable for the preparation of aligned nanostructured polymer thin films with potential applications ranging from stimuli responsive coatings to nanoporous membranes.
May 15, 2017: Soft Matter
https://www.readbyqxmd.com/read/28497951/garnet-solid-electrolyte-protected-li-metal-batteries
#10
Boyang Liu, Yunhui Gong, Kun Fu, Xiaogang Han, Yonggang Yao, Glenn Pastel, Chunpeng Yang, Hua Xie, Eric D Wachsman, Liangbing Hu
Garnet-type solid state electrolyte (SSE) is a promising candidate for high performance lithium (Li)-metal batteries due to its good stability and high ionic conductivity. One of the main challenges for garnet solid state batteries is the poor solid-solid contact between the garnet and electrodes, which results in high interfacial resistance, large polarizations, and low efficiencies in batteries. To address this challenge, in this work gel electrolyte is used as an interlayer between solid electrolyte and solid electrodes to improve their contact and reduce their interfacial resistance...
May 22, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28497150/a-near-room-temperature-organic-inorganic-hybrid-ferroelectric-c6h5ch2ch2nh3-2-cdi4
#11
Bo Huang, Lin-Ying Sun, Sha-Sha Wang, Jian-Yu Zhang, Cheng-Min Ji, Jun-Hua Luo, Wei-Xiong Zhang, Xiao-Ming Chen
An organic-inorganic hybrid compound, [C6H5CH2CH2NH3]2[CdI4], exhibits a reversible ferroelectric phase transition at 301/297 K. Switchable dielectric constant, second harmonic generation, and pyroelectricity were synchronously observed accompanied by the order-disorder phase transition. This finding promotes research on molecular ferroelectrics to search for promising multifunctional switching materials at near room temperature.
May 12, 2017: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/28492242/structure-and-interstitial-iodide-migration-in-hybrid-perovskite-methylammonium-lead-iodide
#12
J L Minns, P Zajdel, D Chernyshov, W van Beek, M A Green
Hybrid perovskites form an emerging family of exceptional light harvesting compounds. However, the mechanism underpinning their photovoltaic effect is still far from understood, which is impeded by a lack of clarity on their structures. Here we show that iodide ions in the methylammonium lead iodide migrate via interstitial sites at temperatures above 280 K. This coincides with temperature dependent static distortions resulting in pseudocubic local symmetry. Based on bond distance analysis, the migrating and distorted iodines are at lengths consistent with the formation of I2 molecules, suggesting a 2I(-)→I2+2e(-) redox couple...
May 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/28492073/polyvalent-and-thermosensitive-dna-nanoensembles-for-cancer-cell-detection-and-manipulation
#13
Jinlu Tang, Yanru Yu, Hui Shi, Xiaoxiao He, Yanli Lei, Jingfang Shangguan, Xue Yang, Zhenzhen Qiao, Kemin Wang
Development of smart DNA nanostructures is of great value in cancer studies. Here, by integrating rolling circle amplification (RCA) into split aptamer design, a novel strategy of polyvalent and thermosensitive DNA nanoensembles was first proposed for cancer cell detection and manipulation. In this strategy, a long nanosolo ssDNA with repeated Split-b and Poly T regions was generated through RCA. Split-b supplied polyvalent binding sites while Poly T supported signal output by hybridizing with fluorophore-labeled poly A...
May 25, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28489078/hybrid-supercapacitors-for-reversible-control-of-magnetism
#14
Alan Molinari, Philipp M Leufke, Christian Reitz, Subho Dasgupta, Ralf Witte, Robert Kruk, Horst Hahn
Electric field tuning of magnetism is one of the most intensely pursued research topics of recent times aiming at the development of new-generation low-power spintronics and microelectronics. However, a reversible magnetoelectric effect with an on/off ratio suitable for easy and precise device operation is yet to be achieved. Here we propose a novel route to robustly tune magnetism via the charging/discharging processes of hybrid supercapacitors, which involve electrostatic (electric-double-layer capacitance) and electrochemical (pseudocapacitance) doping...
May 10, 2017: Nature Communications
https://www.readbyqxmd.com/read/28485398/atomically-precise-organomimetic-cluster-nanomolecules-assembled-via-perfluoroaryl-thiol-snar-chemistry
#15
Elaine A Qian, Alex I Wixtrom, Jonathan C Axtell, Azin Saebi, Dahee Jung, Pavel Rehak, Yanxiao Han, Elamar Hakim Moully, Daniel Mosallaei, Sylvia Chow, Marco S Messina, Jing Yang Wang, A Timothy Royappa, Arnold L Rheingold, Heather D Maynard, Petr Král, Alexander M Spokoyny
The majority of biomolecules are intrinsically atomically precise, an important characteristic that enables rational engineering of their recognition and binding properties. However, imparting a similar precision to hybrid nanoparticles has been challenging because of the inherent limitations of existing chemical methods and building blocks. Here we report a new approach to form atomically precise and highly tunable hybrid nanomolecules with well-defined three-dimensionality. Perfunctionalization of atomically precise clusters with pentafluoroaryl-terminated linkers produces size-tunable rigid cluster nanomolecules...
April 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28482482/simplified-preparation-and-characterization-of-magnetic-hydroxyapatite-based-nanocomposites
#16
Stefania Scialla, Barbara Palazzo, Amilcare Barca, Luigi Carbone, Angela Fiore, Anna Grazia Monteduro, Giuseppe Maruccio, Alessandro Sannino, Francesca Gervaso
Authors aimed to provide a magnetic responsiveness to bone-mimicking nano-hydroxyapatite (n-HA). For this purpose, dextran-grafted iron oxide nanoarchitectures (DM) were synthesized by a green-friendly and scalable alkaline co-precipitation method at room temperature and used to functionalize n-HA crystals. Different amounts of DM hybrid structures were added into the nanocomposites (DM/n-HA 1:1, 2:1 and 3:1weight ratio) which were investigated through extensive physicochemical (XRD, ICP, TGA and Zeta-potential), microstructural (TEM and DLS), magnetic (VSM) and biological analyses (MTT proliferation assay)...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28481391/novel-hybrid-operating-table-for-neuroendovascular-treatment
#17
Park Jong-Hyun, Mun Jonghyeon, Shin Dong-Seung, Kim Bum-Tae
BACKGROUND: The integration of interventional and surgical techniques is requiring the development of a new working environment equipped for the needs of an interdisciplinary neurovascular team. However, conventional surgical and interventional tables have only a limited ability to provide for these needs. We have developed a concept mobile hybrid operating table that provides the ability for such a team to conduct both endovascular and surgical procedures in a single session. METHODS: We developed methods that provide surgeons with angiography-guided surgery techniques for use in a conventional operating room environment...
March 25, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28481097/mild-and-selective-c-h-activation-of-coc-microfluidic-channels-allowing-covalent-multifunctional-coatings
#18
Rui Rijo Carvalho, Sidharam P Pujari, Elwin X Vrouwe, Han Zuilhof
Plastics, such as cyclic olefin copolymer (COC), are becoming an increasingly popular material for microfluidics. COC is used, in part, because of its (bio)-chemical resistance. However, its inertness and hydrophobicity can be a major downside for many bioapplications. In this paper, we show the first example of a surface-bound selective C-H activation of COC into alcohol C-OH moieties under mild aqueous conditions at room temperature. The nucleophilic COC-OH surface allows for subsequent covalent attachments, such as of a H-terminated silane...
May 17, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28474675/wide-bandgap-basno3-films-with-room-temperature-conductivity-exceeding-10-4-s-cm-1
#19
Abhinav Prakash, Peng Xu, Alireza Faghaninia, Sudhanshu Shukla, Joel W Ager, Cynthia S Lo, Bharat Jalan
Wide bandgap perovskite oxides with high room temperature conductivities and structural compatibility with a diverse family of organic/inorganic perovskite materials are of significant interest as transparent conductors and as active components in power electronics. Such materials must also possess high room temperature mobility to minimize power consumption and to enable high-frequency applications. Here, we report n-type BaSnO3 films grown using hybrid molecular beam epitaxy with room temperature conductivity exceeding 10(4) S cm(-1)...
May 5, 2017: Nature Communications
https://www.readbyqxmd.com/read/28466153/-hybrid-operating-rooms-versus-conventional-operating-rooms-economic-comparisons-in-vascular-surgery-using-the-example-of-endovascular-aneurysm-repair
#20
REVIEW
N Attigah, S Demirel, M Hakimi, H Bruijnen, O Schöffski, A Müller, U Geis, D Böckler
BACKGROUND: With changing treatment modalities in vascular surgery towards incorporating more endovascular solutions, increased numbers of hybrid operating theatres are being introduced to meet the sterility and imaging quality requirements. These cost-intensive acquisitions however have never been evaluated from an economic perspective. In this study we evaluated cost-relevant parameters before and after the introduction of a hybrid operating room using the example of endovascular aneurysm repair (EVAR) performed in patients with abdominal aortic aneurysms (AAA)...
May 2, 2017: Der Chirurg; Zeitschrift Für Alle Gebiete der Operativen Medizen
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