scholarly journals Fabrication of Novel Nanoporous Films in Moisture-in-Oil Sensors via Chemical Dealloying of Cu-Cr using Combinatorial Search of Cu–Cr Alloy Compositions – ERRATUM

MRS Advances ◽  
2018 ◽  
Vol 3 (45-46) ◽  
pp. 2841-2843
Author(s):  
Yusuke Yoshii ◽  
Junpei Sakurai ◽  
Mizue Mizoshiri ◽  
Seiichi Hata
Keyword(s):  
Combinatorial Search ◽  
Nanoporous Films

Fabrication of Novel Nanoporous Films in Moisture-in-Oil Sensors via Chemical Dealloying of Cu-Cr using Combinatorial Search of Cu–Cr Alloy Compositions

MRS Advances ◽  
2018 ◽  
Vol 3 (4) ◽  
pp. 225-232 ◽  
Author(s):  
Yusuke Yoshii ◽  
Junpei Sakurai ◽  
Mizue Mizoshiri ◽  
Seiichi Hata
Keyword(s):  
Pore Size ◽  
The Novel ◽  
Combinatorial Search ◽  
Initial Composition ◽  
Compositional Gradient ◽  
Nanoporous Film ◽  
Cr Content ◽  
Nanoporous Films ◽  
Deposited Film

ABSTRACTAn as-deposited film with a Cr compositional gradient (22–15 at.% Cr) was immersed in 22.5% HNO3 for 15 hours. In the part of the film with initial Cr content in the range of 22–18 at.%, Cu dealloying resulted in sufficient Cu dealloying (final Cr content = 33–80 at.%) without film dissolution. Using the film with optimal initial composition Cu82Cr18, we successfully fabricated a nanoporous film with a pore size in the range of 20–40 nm. As a result of the formation of Cr2O3 during dealloying, this film was transparent and exhibited an insulation state. The novel nanoporous film is expected to be applied as a nanofilter in moisture-in-oil sensors.

scholarly journals Nanoporous Films with Photoswitchable Absorption Kinetics Based on Polymerizable Columnar Discotic Liquid Crystals

2021 ◽  
Vol 13 (3) ◽  
pp. 4385-4392
Author(s):  
Jody A. M. Lugger ◽  
Patricia P. Marín San Román ◽  
Camiel C. E. Kroonen ◽  
Rint P. Sijbesma
Keyword(s):  
Liquid Crystals ◽  
Discotic Liquid Crystals ◽  
Absorption Kinetics ◽  
Nanoporous Films

Characterization of the porous nature of a phthalocyanine derivative with axial ligation designed to prevent aggregation

2010 ◽  
Vol 14 (05) ◽  
pp. 389-396
Author(s):  
Carl A. Barker ◽  
Alan Massey ◽  
Aidan Rhodes ◽  
Martin R. Bryce ◽  
Ritu Kataky
Keyword(s):  
Force Microscopy ◽  
Selective Transport ◽  
Electrode Surfaces ◽  
Axial Ligation ◽  
Nanoporous Films ◽  
Atom Force Microscopy ◽  
Solvent Cast ◽  
Complementary Techniques

Judiciously designed phthalocyanines (Pcs), such as silicon-Pc bis(3,5-diphenyl)benzoate (1c), with axial substituents which prevent aggregation, can self-assemble to form ordered nanoporous films on electrode surfaces. In this paper, complementary techniques such as Scanning Kelvin Nanoprobe (SKN) microscopy, Atom Force Microscopy (AFM) and electrochemical measurements are used to demonstrate that films formed by silicon-Pc bis(3,5-diphenyl)benzoate allow size- and charge- selective transport of probe molecules through well-defined intermolecular cavities. In contrast, the analogs silicon-Pc bis(4-tert-butylbenzoate) (1a) and silicon-Pc bis(3-thienyl)acetate (1b) have different film morphologies when solvent-cast in the same manner and block the electrode surface. The role of the different axial substituents in orienting the molecules on the substrate is discussed.

scholarly journals Selective porous gates made from colloidal silica nanoparticles

2015 ◽  
Vol 6 ◽  
pp. 2105-2112 ◽  
Author(s):  
Roberto Nisticò ◽  
Paola Avetta ◽  
Paola Calza ◽  
Debora Fabbri ◽  
Giuliana Magnacca ◽  
...  
Keyword(s):  
Silica Nanoparticles ◽  
Spin Coating ◽  
Colloidal Silica ◽  
Sol Gel ◽  
Chemical Species ◽  
Solvent System ◽  
Porous Films ◽  
Nanoporous Films ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene

Highly selective porous films were prepared by spin-coating deposition of colloidal silica nanoparticles on an appropriate macroporous substrate. Silica nanoparticles very homogenous in size were obtained by sol–gel reaction of a metal oxide silica precursor, tetraethyl orthosilicate (TEOS), and using polystyrene-block-poly(ethylene oxide) (PS-b-PEO) copolymers as soft-templating agents. Nanoparticles synthesis was carried out in a mixed solvent system. After spin-coating onto a macroporous silicon nitride support, silica nanoparticles were calcined under controlled conditions. An organized nanoporous layer was obtained characterized by a depth filter-like structure with internal porosity due to interparticle voids. Permeability and size-selectivity were studied by monitoring the diffusion of probe molecules under standard conditions and under the application of an external stimulus (i.e., electric field). Promising results were obtained, suggesting possible applications of these nanoporous films as selective gates for controlled transport of chemical species in solution.

Block Copolymer Surface Reconstuction: A Reversible Route to Nanoporous Films

2003 ◽  
Vol 13 (9) ◽  
pp. 698-702 ◽  
Author(s):  
T. Xu ◽  
J. Stevens ◽  
J.A. Villa ◽  
J.T. Goldbach ◽  
K.W. Guarini ◽  
...  
Keyword(s):  
Block Copolymer ◽  
Nanoporous Films

Database Tuning using Combinatorial Search

2009 ◽  
pp. 738-741
Author(s):  
Surajit Chaudhuri ◽  
Vivek Narasayya ◽  
Gerhard Weikum
Keyword(s):  
Combinatorial Search ◽  
Database Tuning

Combinatorial search theory

2018 ◽  
pp. 275-294
Author(s):  
Dániel Gerbner ◽  
Balázs Patkós
Keyword(s):  
Search Theory ◽  
Combinatorial Search

Water Droplet Self-Assembly to Au Nanoporous Films with Special Light Trapping and Surface Electromagnetic Field Enhancement

Langmuir ◽  
2018 ◽  
Vol 34 (47) ◽  
pp. 14124-14133 ◽  
Author(s):  
Vanessa H. Fragal ◽  
Elizângela H. Fragal ◽  
Adley F. Rubira ◽  
Rafael Silva
Keyword(s):  
Electromagnetic Field ◽  
Self Assembly ◽  
Water Droplet ◽  
Light Trapping ◽  
Field Enhancement ◽  
Nanoporous Films

scholarly journals Multi-Agent Path Finding with Deadlines

2018 ◽  
Author(s):  
Hang Ma ◽  
Glenn Wagner ◽  
Ariel Felner ◽  
Jiaoyang Li ◽  
T. K. Satish Kumar ◽  
...  
Keyword(s):  
Flow Problem ◽  
Search Algorithms ◽  
The Other ◽  
Path Finding ◽  
Combinatorial Search ◽  
Programming Formulation ◽  
Commodity Flow ◽  
Linear Programming Formulation ◽  
Multi Agent ◽  
Integer Linear Programming Formulation

We formalize Multi-Agent Path Finding with Deadlines (MAPF-DL). The objective is to maximize the number of agents that can reach their given goal vertices from their given start vertices within the deadline, without colliding with each other. We first show that MAPF-DL is NP-hard to solve optimally. We then present two classes of optimal algorithms, one based on a reduction of MAPF-DL to a flow problem and a subsequent compact integer linear programming formulation of the resulting reduced abstracted multi-commodity flow network and the other one based on novel combinatorial search algorithms. Our empirical results demonstrate that these MAPF-DL solvers scale well and each one dominates the other ones in different scenarios.

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