Strong chemisorption of CO on M@Bn− (M = Co, Ir, Rh, Ru, Ta, Nb, n = 8–10) clusters: an implication for wheel boron clusters as CO gas detectors

RSC Advances ◽  
2015 ◽  
Vol 5 (100) ◽  
pp. 82524-82530 ◽  
Author(s):  
Cong Ren ◽  
Weihua Wang ◽  
Chao Guo ◽  
Ping Li ◽  
Yuxia Liu ◽  
...  
Keyword(s):  
Gas Detectors ◽  
Boron Clusters ◽  
Potential Applications ◽  
Co Detection ◽  
Co Gas

The potential applications of wheel M@Bn− clusters in CO detection have been proposed theoretically.

Large Molecules Containing Icosahedral Boron Clusters Designed for Potential Applications

Boron Science ◽  
2011 ◽  
pp. 701-740 ◽  
Author(s):  
Clara Viñas ◽  
Rosario Núñez ◽  
Francesc Teixidor
Keyword(s):  
Boron Clusters ◽  
Large Molecules ◽  
Potential Applications

ChemInform Abstract: Large Molecules Containing Icosahedral Boron Clusters Designed for Potential Applications

ChemInform ◽  
2012 ◽  
Vol 43 (11) ◽  
pp. no-no
Author(s):  
Clara Vinas ◽  
Rosario Nunez ◽  
Francesc Teixidor
Keyword(s):  
Boron Clusters ◽  
Large Molecules ◽  
Potential Applications

Heterostructured Co3O4/PEI–CNTs composite: fabrication, characterization and CO gas sensors at room temperature

2014 ◽  
Vol 2 (13) ◽  
pp. 4558-4565 ◽  
Author(s):  
Lifang Dang ◽  
Guo Zhang ◽  
Kan Kan ◽  
Yufei Lin ◽  
Fuquan Bai ◽  
...  
Keyword(s):  
Gas Sensors ◽  
Room Temperature ◽  
Sensing Properties ◽  
Composite Fabrication ◽  
Chemical Approach ◽  
Co Detection ◽  
Composite Sensor ◽  
Co Gas

A noncovalent chemical approach is developed for hybridizing PEI–CNTs with Co3O4 nanoparticles. The Co3O4/PEI–CNTs composite sensor exhibits excellent sensing properties at room temperature to CO detection.

scholarly journals Carbone Monoxide (CO) Detection Device Based on the Nickel Antimonate Oxide and a DC Electronic Circuit

2019 ◽  
Vol 9 (18) ◽  
pp. 3799
Author(s):  
José Trinidad Guillen Bonilla ◽  
Héctor Guillén Bonilla ◽  
Verónica María Rodríguez Betancourtt ◽  
Antonio Casillas Zamora ◽  
Jorge Alberto Ramírez Ortega ◽  
...  
Keyword(s):  
Electronic Circuit ◽  
Chemical Sensor ◽  
Electrical Response ◽  
High Sensitivity ◽  
Optimal Operation ◽  
Oxide Powders ◽  
Co Detection ◽  
Electronic Circuit Implementation ◽  
Co Gas

Carbon monoxide (CO) is very toxic to health. CO gas can cause intoxication and even death when the concentration is high or there are long exposure times. To detect atmospheres with CO gas concentration detectors are placed. In this work, a novel CO detection device was proposed and applied for CO detection. For its implementation, four stages were developed: Synthesis of nickel antimonite (NiSb2O6) oxide powders, physical characterization of NiSb2O6 powders, Pellet fabrication and sensitivity test in CO atmospheres and electronic circuit implementation where signal adaptation and signal amplification were considered. Experimentally, a chemical sensor was built and characterized, its signal adaptation circuit was implemented and also it was proved using CO concentrations from 1 to 300 ppm with the operating temperatures of 100, 200, and 300 °C. Its optimal operation was at 300 °C. From the experimental results, the CO detection device had excellent functionality because the chemical sensor based on the nickel antimonite oxide had high sensitivity and good electrical response, whereas the DC electronic circuit had good performance.

scholarly journals Observation of CO Detection Using Aluminum-Doped ZnO Nanorods on Microcantilever

Sensors ◽  
2020 ◽  
Vol 20 (7) ◽  
pp. 2013 ◽  
Author(s):  
Ratno Nuryadi ◽  
Lia Aprilia ◽  
Makoto Hosoda ◽  
Mohamad Abdul Barique ◽  
Arief Udhiarto ◽  
...  
Keyword(s):  
Resonant Frequency ◽  
Gas Flow ◽  
Room Temperature ◽  
Zno Nanorods ◽  
Fast Response ◽  
Gas Detectors ◽  
Resonant Frequency Shift ◽  
Highly Sensitive ◽  
Doped Zno ◽  
Co Gas

An oscillating piezoresistive microcantilever (MC) coated with an aluminum (Al)-doped zinc oxide (ZnO) nanorods was used to detect carbon monoxide (CO) in air at room temperature. Al-doped ZnO nanorods were grown on the MC surface using the hydrothermal method, and a response to CO gas was observed by measuring a resonant frequency shift of vibrated MC. CO gas response showed a significant increase in resonant frequency, where sensitivity in the order of picogram amounts was obtained. An increase in resonant frequency was also observed with increasing gas flow rate, which was simultaneously followed by a decrease in relative humidity, indicating that the molecular interface between ZnO and H2O plays a key role in CO absorption. The detection of other gases of carbon compounds such as CO2 and CH4 was also performed; the sensitivity of CO was found to be higher than those gases. The results demonstrate the reversibility and reproducibility of the proposed technique, opening up future developments of highly sensitive CO-gas detectors with a fast response and room temperature operation.

scholarly journals Highly Multiplexed Immunofluorescence of the Human Kidney using Co-Detection by Indexing (CODEX)

2020 ◽  
Author(s):  
Elizabeth K. Neumann ◽  
Emilio S. Rivera ◽  
Nathan Heath Patterson ◽  
Jamie L. Allen ◽  
Maya Brewer ◽  
...  
Keyword(s):  
Smooth Muscle Actin ◽  
Human Kidney ◽  
Cell Types ◽  
Thick Ascending Limb ◽  
Tissue Architecture ◽  
Collecting Ducts ◽  
Potential Applications ◽  
Co Detection ◽  
Abundance And Distribution ◽  
High Degree

ABSTRACTThe human kidney is composed of many cell types that vary in their abundance and distribution from organ to organ. As these cell types perform unique and essential functions, it is important to confidently label each within a single tissue to more accurately assess tissue architecture. Towards this goal, we demonstrate the use of co-detection by indexing (CODEX) multiplexed immunofluorescence for visualizing 23 antigens within the human kidney. Using CODEX, many of the major cell types and substructures, such as collecting ducts, glomeruli, and thick ascending limb, were visualized within a single tissue section. Of these antibodies, 19 were conjugated in-house, demonstrating the flexibility and utility of this approach for studying the human kidney using traditional antibody markers. We performed a pilot study showing that the studied tissues had on average 84 ± 11 cells per mm2 with the most variance seen within the cells containing vimentin and aquaporin 1, while cells containing α-smooth muscle actin and CD31 possessed a high degree of uniformity between the samples. These precursory data show the power of CODEX multiplexed IF for surveying the cellular diversity of the human kidney and have potential applications within pathology, histology, and building anatomical atlases.

An in situ and ex situ TEM study of the formation of thin cobalt silicide films by molecular beam epitaxy on the silicon (100) surface

1988 ◽  
Vol 46 ◽  
pp. 884-885
Author(s):  
D. Loretto ◽  
J. M. Gibson ◽  
S. M. Yalisove ◽  
R. T. Tung
Keyword(s):  
Molecular Beam Epitaxy ◽  
Molecular Beam ◽  
Defect Density ◽  
High Vacuum ◽  
Ultra High Vacuum ◽  
Ex Situ ◽  
Metal Base ◽  
In Situ Experiments ◽  
Potential Applications

The cobalt disilicide/silicon system has potential applications as a metal-base and as a permeable-base transistor. Although thin, low defect density, films of CoSi2 on Si(111) have been successfully grown, there are reasons to believe that Si(100)/CoSi2 may be better suited to the transmission of electrons at the silicon/silicide interface than Si(111)/CoSi2. A TEM study of the formation of CoSi2 on Si(100) is therefore being conducted. We have previously reported TEM observations on Si(111)/CoSi2 grown both in situ, in an ultra high vacuum (UHV) TEM and ex situ, in a conventional Molecular Beam Epitaxy system.The procedures used for the MBE growth have been described elsewhere. In situ experiments were performed in a JEOL 200CX electron microscope, extensively modified to give a vacuum of better than 10-9 T in the specimen region and the capacity to do in situ sample heating and deposition. Cobalt was deposited onto clean Si(100) samples by thermal evaporation from cobalt-coated Ta filaments.

Microstructure of laser-irradiated, conducting Kapton polyimide

1995 ◽  
Vol 53 ◽  
pp. 502-503
Author(s):  
D. L. Callahan ◽  
Z. Ball ◽  
H. M. Phillips ◽  
R. Sauerbrey
Keyword(s):  
Electron Microscopy ◽  
Phase Transition ◽  
Transmission Electron Microscopy ◽  
Cross Section ◽  
Film Surface ◽  
Cross Sectional ◽  
General Utility ◽  
Transmission Electron ◽  
Considerable Debate ◽  
Potential Applications

Ultraviolet laser-irradiation can be used to induce an insulator-to-conductor phase transition on the surface of Kapton polyimide. Such structures have potential applications as resistors or conductors for VLSI applications as well as general utility electrodes. Although the percolative nature of the phase transformation has been well-established, there has been little definitive work on the mechanism or extent of transformation. In particular, there has been considerable debate about whether or not the transition is primarily photothermal in nature, as we propose, or photochemical. In this study, cross-sectional optical microscopy and transmission electron microscopy are utilized to characterize the nature of microstructural changes associated with the laser-induced pyrolysis of polyimide.Laser-modified polyimide samples initially 12 μm thick were prepared in cross-section by standard ultramicrotomy. Resulting contraction in parallel to the film surface has led to distortions in apparent magnification. The scale bars shown are calibrated for the direction normal to the film surface only.

Fabrication and characterization - by High Resolution Electron Microscopy and atom probe microanalysis - of Co-based metallic multilayer films

1990 ◽  
Vol 48 (4) ◽  
pp. 772-773
Author(s):  
Amanda K. Petford-Long ◽  
A. Cerezo ◽  
M.G. Hetherington
Keyword(s):  
Electron Microscopy ◽  
High Resolution ◽  
High Resolution Electron Microscopy ◽  
Atom Probe ◽  
Multilayer Films ◽  
Interface Roughness ◽  
Probe Field ◽  
Resolution Electron ◽  
Potential Applications ◽  
Field Ion Microscope

The fabrication of multilayer films (MLF) with layer thicknesses down to one monolayer has led to the development of materials with unique properties not found in bulk materials. The properties of interest depend critically on the structure and composition of the films, with the interfacial regions between the layers being of particular importance. There are a number of magnetic MLF systems based on Co, several of which have potential applications as perpendicular magnetic (e.g Co/Cr) or magneto-optic (e.g. Co/Pt) recording media. Of particular concern are the effects of parameters such as crystallographic texture and interface roughness, which are determined by the fabrication conditions, on magnetic properties and structure.In this study we have fabricated Co-based MLF by UHV thermal evaporation in the prechamber of an atom probe field-ion microscope (AP). The multilayers were deposited simultaneously onto cobalt field-ion specimens (for AP and position-sensitive atom probe (POSAP) microanalysis without exposure to atmosphere) and onto the flat (001) surface of oxidised silicon wafers (for subsequent study in cross-section using high-resolution electron microscopy (HREM) in a JEOL 4000EX. Deposi-tion was from W filaments loaded with material in the form of wire (Co, Fe, Ni, Pt and Au) or flakes (Cr). The base pressure in the chamber was around 8×10−8 torr during deposition with a typical deposition rate of 0.05 - 0.2nm/s.

Progress and perspectives on halide lithium conductors for all-solid-state lithium batteries

2020 ◽  
Vol 13 (5) ◽  
pp. 1429-1461 ◽  
Author(s):  
Xiaona Li ◽  
Jianwen Liang ◽  
Xiaofei Yang ◽  
Keegan R. Adair ◽  
Changhong Wang ◽  
...  
Keyword(s):  
Energy Storage ◽  
Solid State ◽  
Lithium Batteries ◽  
Electrochemical Stability ◽  
Superionic Conductors ◽  
Fundamental Understanding ◽  
Potential Applications ◽  
Synthesis Routes

This review focuses on fundamental understanding, various synthesis routes, chemical/electrochemical stability of halide-based lithium superionic conductors, and their potential applications in energy storage as well as related challenges.

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