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Showing 1-26 of 26 results for "206237" within Papers
Deok-Yong Cho et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 24(5), 055503-055503 (2012-01-10)
In order to examine the effects of strong valence band spin-orbit coupling (SOC) in 5d transition metal oxides (TMOs), we have investigated the L(2) and L(3) edge white-line intensities of the x-ray absorption spectra of several 5d TMOs. The white-line
Guangfu Li et al.
ChemSusChem, 5(5), 858-861 (2012-03-24)
Morphological control by SBA-15: The performance of catalysts for the oxygen evolution reaction (OER) depends strongly on their structural and morphological properties. An IrO(2) nanomaterial with a morphology suitable for the OER is prepared by using a synthetic scheme involving
JingYan Nian et al.
The journal of physical chemistry. A, 115(40), 11023-11032 (2011-09-03)
The mechanisms of the reactions between N(2)O and CO catalyzed by IrO(n)(+) (n = 1, 2) have been investigated using B3LYP and CCSD(T) levels of theory. Spin inversion among three reaction profiles corresponding to the quintet, triplet, and singlet multiplicities
H B Campbell et al.
Biosensors & bioelectronics, 42, 563-569 (2012-12-25)
The primary goal of this work is the development of a rapidly responding, sensitive, and biocompatible Ir oxide (IrOx)-based glucose sensor that regenerates solely via IrOx-mediation in both O₂-free and aerobic environments. An important discovery is that, for films composed
Vanessa M Tolosa et al.
Biosensors & bioelectronics, 42, 256-260 (2012-12-05)
An implantable micromachined multi-electrode array (MEA) microprobe modified for utilization as a complete electrochemical biosensor for rapid glutamate detection is described. A post-fabrication method for electrochemical deposition of an iridium oxide (IrOx) film onto a designated microelectrode enabled incorporation of
Shawn K Kelly et al.
IEEE transactions on bio-medical engineering, 58(11), 3197-3205 (2011-08-24)
A miniaturized, hermetically encased, wirelessly operated retinal prosthesis has been developed for preclinical studies in the Yucatan minipig, and includes several design improvements over our previously reported device. The prosthesis attaches conformally to the outside of the eye and electrically
Matthias Heim et al.
Journal of physiology, Paris, 106(3-4), 137-145 (2011-10-27)
Microelectrode arrays (MEAs) are widely used tools for recording and stimulating extracellular neuronal activity. Major limitations when decreasing electrode size in dense arrays are increased noise level and low charge injection capability. Nanostructuration of the electrode sites on MEAs presents
Seong Jung Kwon et al.
Journal of the American Chemical Society, 134(16), 7102-7108 (2012-03-29)
We investigated the electrochemical detection of single iridium oxide nanoparticle (IrO(x) NP) collisions at the NaBH(4)-treated Pt ultramicroelectrode (UME) in a scanning electrochemical microscope (SECM) over an insulating surface. The NP collision events were monitored by observing the electrocatalytic water
Jie Wu et al.
Chemosphere, 87(6), 614-620 (2012-02-22)
The removal of antibiotic tetracycline (TC) from water by electrochemical advanced oxidation process (EAOP) was performed using a carbon-felt cathode and a DSA (Ti/RuO(2)-IrO(2)) anode. The influence of applied current, initial pH and initial TC concentration on TC removal efficiency
Martin Han et al.
IEEE transactions on bio-medical engineering, 59(2), 346-354 (2011-10-25)
We developed and validated silicon-based neural probes for neural stimulating and recording in long-term implantation in the brain. The probes combine the deep reactive ion etching process and mechanical shaping of their tip region, yielding a mechanically sturdy shank with
Zhe Hu et al.
Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference, 2012, 2788-2791 (2013-02-01)
Activated Iridium Oxide Film (AIROF) microelectrodes are regarded as advantage for stimulation of neural tissue owing to their superior charge injection capabilities, as compared to other noble-metal based electrodes. Including AIROF electrodes within an implantable neural stimulator can be challenging
Jun Ho Shim et al.
Analytical chemistry, 84(8), 3827-3832 (2012-03-30)
Applying nanoscale device fabrications toward biomolecules, ultra sensitive, selective, robust, and reliable chemical or biological microsensors have been one of the most fascinating research directions in our life science. Here we introduce hierarchically driven iridium dioxide (IrO(2)) nanowires directly on
J Gustavsson et al.
Acta biomaterialia, 8(1), 386-393 (2011-10-25)
Calcium phosphate compounds can potentially influence cellular fate through ionic substitutions. However, to be able to turn such solution-mediated processes into successful directors of cellular response, a perfect understanding of the material-induced chemical reactions in situ is required. We therefore
M R Gonçalves et al.
Water research, 46(13), 4217-4225 (2012-06-13)
A novel approach was developed for the energetic valorisation and treatment of olive mill wastewater (OMW), combining anaerobic digestion and electrochemical oxidation. The electrochemical treatment was proposed as the final step to mineralize the remaining OMW fraction from the anaerobic
L Pang et al.
Water science and technology : a journal of the International Association on Water Pollution Research, 67(3), 521-526 (2012-12-04)
Electrochemical oxidation of methyl orange wastewater was studied using Ti/IrO(2)/RuO(2) anode and a self-made Pd/C O(2)-fed cathode in the divided cell with a terylene diaphragm. The result indicated that the appropriate rate of feeding air improved the methyl orange removal
Xin Zhou et al.
The journal of physical chemistry. A, 116(40), 9985-9995 (2012-09-19)
The geometric structures and relative stabilities of small iridium oxide nanoclusters, Ir(m)O(n) (m = 1-5 and n = 1-2m), have been systematically investigated using density functional theory (DFT) calculations at the B3LYP level. Our results show that the lowest-energy structures
Yasuyuki Hirata et al.
Physical review letters, 110(18), 187402-187402 (2013-05-21)
The structural, electronic, and optical properties of pyrochlore-type Pb(2)Ir(2)O(6)O(0.55)('), which is a metal without spatial inversion symmetry at room temperature, were investigated. Structural analysis revealed that the structural distortion relevant to the breakdown of the inversion symmetry is dominated by
Elisabet Prats-Alfonso et al.
Biosensors & bioelectronics, 39(1), 163-169 (2012-08-04)
This work demonstrates the implementation of iridium oxide films (IROF) grown on silicon-based thin-film platinum microelectrodes, their utilization as a pH sensor, and their successful formatting into a urea pH sensor. In this context, Pt electrodes were fabricated on Silicon
M-S Miao et al.
Journal of physics. Condensed matter : an Institute of Physics journal, 24(21), 215503-215503 (2012-05-01)
Despite the wide-ranging applications of binary Rh and Ir oxides, their stability and trends in Rh and Ir oxidation states are not fully understood. Using first-principles electronic structure calculations, we demonstrate that the origin of the categorical stability of Ir(4+)
Narayanappa Sivasankar et al.
Journal of the American Chemical Society, 133(33), 12976-12979 (2011-07-21)
A surface hydroperoxide intermediate has been detected upon oxidation of water at an Ir oxide nanocluster catalyst system under pulsed excitation of a [Ru(bpy)(3)](2+) visible light sensitizer by recording of the OO vibrational mode at 830 cm(-1). Rapid-scan FT-IR spectroscopy
Thomas Niederhauser et al.
IEEE transactions on bio-medical engineering, 60(9), 2576-2584 (2013-05-08)
The emerging application of long-term and high-quality ECG recording requires alternative electrodes to improve the signal quality and recording capability of surface skin electrodes. The esophageal ECG has the potential to overcome these limitations but necessitates novel recorder and lead
Yoon Sung Nam et al.
Nanoscale, 4(11), 3405-3409 (2012-05-11)
A highly porous electrode comprised of biologically templated iridium oxide-gold (IrO(2)-Au) hybrid nanowires is introduced for electrochromic applications. A filamentous M13 virus is genetically engineered to display IrO(2)-binding peptides on the viral surface and used as a template for the
Chia-Ching Wang et al.
Langmuir : the ACS journal of surfaces and colloids, 27(23), 14253-14259 (2011-11-04)
In this study, we employed density functional theory (DFT) to investigate the oxidation of ammonia (NH(3)) on the IrO(2)(110) surface. We characterized the possible reaction pathways for the dehydrogenation of NH(x) species (x = 1-3) and for the formation of
Nuno Sérgio Dias et al.
Medical engineering & physics, 34(7), 972-981 (2011-12-14)
This paper presents a complete non-invasive Wireless acquisition system based on dry electrodes for electroencephalograms (WiDE-EEG) with emphasis in the electronic system design. The WiDE-EEG is composed by a 2.4 GHz radio-frequency (RF) transceiver, biopotential acquisition electronics and dry electrodes.
Igor A Ges et al.
Biosensors & bioelectronics, 34(1), 30-36 (2012-03-09)
Release of neurotransmitters and hormones by calcium regulated exocytosis is a fundamental cellular/molecular process that is disrupted in a variety of psychiatric, neurological, and endocrine disorders. Therefore, this area represents a relevant target for drug and therapeutic development, efforts that
Yixin Zhao et al.
Small (Weinheim an der Bergstrasse, Germany), 7(14), 2087-2093 (2011-06-17)
A facile, in-situ deposition route to stable iridium oxide (IrO(x)·nH(2)O) nanoparticle thin films from [Ir(OH)(6)](2-) solutions is reported. The [Ir(OH)(6)](2-) solution, made by alkaline hydrolysis of [IrCl(6)](2-), is colorless and stable near neutral pH, and forms blue IrO(x)·nH(2)O nanoparticle suspensions
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