Three-Dimensional Molecular Mapping of Ionic Liquids at Electrified Interfaces

ACS Nano ◽  
2020 ◽  
Vol 14 (12) ◽  
pp. 17515-17523
Author(s):  
Shan Zhou ◽  
Kaustubh S. Panse ◽  
Mohammad Hossein Motevaselian ◽  
Narayana R. Aluru ◽  
Yingjie Zhang
Keyword(s):  
Ionic Liquids ◽  
Molecular Mapping ◽  
Three Dimensional ◽  
Electrified Interfaces

Three-Dimensional Molecular Mapping of a Multiple Emulsion by Means of CARS Microscopy

2008 ◽  
Vol 112 (5) ◽  
pp. 1420-1426 ◽  
Author(s):  
Tobias Meyer ◽  
Denis Akimov ◽  
Nicolae Tarcea ◽  
Susana Chatzipapadopoulos ◽  
Gerald Muschiolik ◽  
...  
Keyword(s):  
Molecular Mapping ◽  
Three Dimensional ◽  
Multiple Emulsion ◽  
Cars Microscopy

scholarly journals V2O2F4(H2O)2·H2O: a new V4+layer structure related to VOF3

2016 ◽  
Vol 72 (1) ◽  
pp. 80-83 ◽  
Author(s):  
Cameron Black ◽  
Philip Lightfoot
Keyword(s):  
Ionic Liquids ◽  
Title Compound ◽  
Solvothermal Synthesis ◽  
Layer Structure ◽  
Three Dimensional ◽  
Water Molecules ◽  
Frustrated Magnets ◽  
Two Dimensional ◽  
Triangular Lattices ◽  
Solvothermal Conditions

VIVoxyfluorides are of interest as frustrated magnets. The successful synthesis of two-dimensionally connected vanadium(IV) oxyfluoride structures generally requires the use of ionic liquids as solvents. During solvothermal synthesis experiments aimed at producing two- and three-dimensional vanadium(IV) selenites with triangular lattices, the title compound, diaquatetra-μ-fluorido-dioxidodivanadium(IV) monohydrate, V2O2F4(H2O)2·H2O, was discovered and features a new infinite V4+-containing two-dimensional layer comprised of fluorine-bridged corner- and edge-sharing VOF4(H2O) octahedral building units. The synthesis was carried out under solvothermal conditions. The V4+centre exhibits a typical off-centring, with a short V=O bond and an elongatedtrans-V—F bond. Hydrogen-bonded water molecules occur between the layers. The structure is related to previously reported vanadium oxyfluoride structures, in particular, the same layer topology is seen in VOF3.

scholarly journals Three-dimensional molecular mapping in a microfluidic mixing device using fluorescence lifetime imaging

2008 ◽  
Vol 33 (16) ◽  
pp. 1887 ◽  
Author(s):  
Tom Robinson ◽  
Prashant Valluri ◽  
Hugh B. Manning ◽  
Dylan M. Owen ◽  
Ian Munro ◽  
...  
Keyword(s):  
Fluorescence Lifetime ◽  
Molecular Mapping ◽  
Three Dimensional ◽  
Fluorescence Lifetime Imaging ◽  
Microfluidic Mixing ◽  
Lifetime Imaging

Evolution of Designs for Constructal Cooling of a Square Plate Using Water, Ionic Liquid, and Nano-Enhanced Ionic Liquids

2020 ◽  
Vol 12 (2) ◽  
Author(s):  
Ashok K. Barik ◽  
Swetapadma Rout ◽  
Pandaba Patro
Keyword(s):  
Ionic Liquids ◽  
Three Dimensional ◽  
Simple Algorithm ◽  
Constant Heat Flux ◽  
Cooling Effect ◽  
Constructal Theory ◽  
Ansys Fluent ◽  
Flux Boundary Condition ◽  
Heated Substrate ◽  
Square Plate

Abstract In this paper, we investigate the design-evolution of an embedded pipe based on the constructal theory to obtain the best design that cools a square plate subjected to a constant heat flux boundary condition. The water, ionic liquids (ILs), and nano-enhanced ionic liquids (NEILs, i.e., [C4mim][NTf2] + Al2O3 and [C4mpyrr][NTf2] + Al2O3) have been used as the coolants. Several designs (Case 1 to Case 11) have been tested to quantify the non-dimensional temperature of the heated substrate by implementing the finite volume method of ansys fluent. The three-dimensional continuity, momentum, and energy equations have been solved iteratively in the fluid region by incorporating SIMPLE algorithm with appropriate boundary conditions; while the conduction equation is solved in the solid region. Among all the considered designs, it has been found that Case 3 provides a better cooling effect for the heated substrate. For all of the considered configurations/designs, it is also found that the non-dimensional temperature decreases with the length of the morphing pipe. NEILs exhibit a better cooling effect of the substrate when compared with the ILs and water. The present numerical methodology is also validated with the previous literature.

Vive La Différence! Mapping Macromolecular Complexes by Generalized Difference Imaging

2000 ◽  
Vol 6 (S2) ◽  
pp. 252-253
Author(s):  
Alasdair C. Steven ◽  
James F. Conway ◽  
Naiqian Cheng ◽  
Norman R. Watts ◽  
Paul T. Wingfield
Keyword(s):  
Molecular Mapping ◽  
Three Dimensional ◽  
Cellular Functions ◽  
Macromolecular Complexes ◽  
Protein Subunits ◽  
First Order ◽  
Molecular Weights ◽  
Cryo Electron Microscopy ◽  
Polypeptide Chains ◽  
Difference Imaging

Overview. Three-dimensional cryo-electron microscopy holds great potential for the investigation of macromolecular complexes, including viruses, the cytoskeleton, and the nanomachines that carry out many vital cellular functions. Such complexes often contain protein subunits of different kinds, with cumulative molecular weights running well into the megadalton range. To rationalize their functional assignments in structural terms, the first order of business is to map the locations of the component subunits of a given complex. A more detailed objective then becomes to understand the organization of their domains and the overall layout of the polypeptide chains. With current methodology, resolutions below 20Å are often achievable in cryo-EM, extending below 10 Å in favorable cases. Although resolutions of this order yield valuable morphological information, they do not usually suffice to identify individual subunits within a complex. Generalized difference imaging offers a solution to this problem of molecular mapping.

Dynamic Three-Dimensional Nanowetting Behavior of Imidazolium-Based Ionic Liquids Probed by Molecular Dynamics Simulation

2017 ◽  
Vol 121 (42) ◽  
pp. 23716-23726 ◽  
Author(s):  
Yongji Guan ◽  
Qunfeng Shao ◽  
Wenqiong Chen ◽  
Shimin Liu ◽  
Xiaoping Zhang ◽  
...  
Keyword(s):  
Molecular Dynamics ◽  
Ionic Liquids ◽  
Molecular Dynamics Simulation ◽  
Three Dimensional ◽  
Dynamics Simulation

scholarly journals Nanostructure Determines the Wettability of Gold Surfaces by Ionic Liquid Ultrathin Films

2021 ◽  
Vol 9 ◽  
Author(s):  
Francesca Borghi ◽  
Matteo Mirigliano ◽  
Cristina Lenardi ◽  
Paolo Milani ◽  
Alessandro Podestà
Keyword(s):  
Ionic Liquid ◽  
Ionic Liquids ◽  
Ultrathin Films ◽  
Gold Nanostructures ◽  
Lateral Extension ◽  
Gold Surfaces ◽  
Energy Devices ◽  
Biomedical Technologies ◽  
Electrified Interfaces

Ionic liquids are employed in energy storage/harvesting devices, in catalysis and biomedical technologies, due to their tunable bulk and interfacial properties. In particular, the wettability and the structuring of the ionic liquids at the interface are of paramount importance for all those applications exploiting ionic liquids tribological properties, their double layer organization at electrified interfaces, and interfacial chemical reactions. Here we report an experimental investigation of the wettability and organization at the interface of an imidazolium-based ionic liquid ([Bmim][NTf2]) and gold surfaces, that are widely used as electrodes in energy devices, electronics, fluidics. In particular, we investigated the role of the nanostructure on the resulting interfacial interactions between [Bmim][NTf2] and atom-assembled or cluster-assembled gold thin films. Our results highlight the presence of the solid-like structured ionic liquid domains extending several tens of nanometres far from the gold interfaces, and characterized by different lateral extension, according to the wettability of the gold nanostructures by the IL liquid-phase.

Abstract 18171: HCN Channel Distribution in the Human Sinoatrial Node and Latent Atrial Pacemakers (Best of Basic Science Abstract)

Circulation ◽  
2015 ◽  
Vol 132 (suppl_3) ◽  
Author(s):  
Ning Li ◽  
Thomas A Csepe ◽  
Brian J Hansen ◽  
Halina Dobrzynski ◽  
Robert S Higgins ◽  
...  
Keyword(s):  
Molecular Mapping ◽  
Expression Patterns ◽  
Critical Role ◽  
Density Ratio ◽  
Three Dimensional ◽  
Cardiac Pacemaker ◽  
Right Atrial ◽  
Expression Ratio ◽  
Compact Region ◽  
Fresh Frozen

Background: The hyperpolarization-activated current, I f , plays an important role in cardiac pacemaker cells. However, the distribution and expression of HCN isoforms in the human SAN and latent atrial pacemaker clusters is unknown. Methods: Human atria and entire SAN complexes were isolated from failing (n=5) and non-failing (n=9) human hearts cardioplegically-arrested in the operating room. Three dimensional intramural SAN structure was identified as the fibrotic compact region around the SAN artery with Connexin43-negative pacemaker cardiomyocytes visualized in Masson’s trichrome and immunostained cryosections. Pure SAN tissue was precisely isolated from the frozen SAN cryo blocks using a 16G biopsy needle (Figure). Atrial tissues from different locations were fresh frozen in liquid nitrogen. Immunoblot and immunostaining were used to study the expression pattern of HCN isoforms. Results: Three HCN isoform proteins were detected in the atria and SAN (Figure). HCN1 was predominantly distributed in all the human SAN with a 125.1±40.2 (n=12) expression ratio of SAN to right atrial free wall (RAFW). HCN2 and HCN4 expression levels were higher in SAN than atria with ratios of 6.1±0.9 and 4.6±0.6 (n=12), respectively. HCN2 expression but not HCN1/4 in the latent atrial pacemakers from the right atrioventricular ring (RR) area was significantly higher than in RAFW, with the band density ratio of RR/RAFW= 2.4±0.4 (n=12). Conclusions: This is the first study to conduct precise molecular mapping of the human SAN by isolating pure pacemaker SAN tissue. HCN1 was almost exclusively expressed in SAN and may play a critical role in determining the leading pacemaker in human SAN. Even HCN2 and HCN4 expression is higher in the SAN than RAFW, these isoforms are less SAN-specific than HCN1. SAN and latent atrial pacemakers have different HCN expression patterns, suggesting the utility of HCN isoform specific blockers to selectively modify sinus rhythm or atrial ectopic rhythms.

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