Controllable growth of durable superhydrophobic coatings on a copper substrate via electrodeposition

2015 ◽  
Vol 17 (16) ◽  
pp. 10871-10880 ◽  
Author(s):  
Ge He ◽  
Shixiang Lu ◽  
Wenguo Xu ◽  
Sabine Szunerits ◽  
Rabah Boukherroub ◽  
...  
Keyword(s):  
Copper Substrate ◽  
Time Saving ◽  
Organic Modification ◽  
Superhydrophobic Coatings ◽  
Controllable Growth

Durable superhydrophobic coatings with excellent properties were created via facile and time-saving electrodeposition combined with annealing without organic modification.

Controlled growth of CuO–Cu3Pt/Cu micro-nano binary architectures on copper substrate and its superhydrophobic behavior

2014 ◽  
Vol 38 (9) ◽  
pp. 4534-4540 ◽  
Author(s):  
Nan Zhang ◽  
Shixiang Lu ◽  
Wenguo Xu ◽  
Yan Zhang
Keyword(s):  
Superhydrophobic Surface ◽  
Copper Substrate ◽  
Controlled Growth ◽  
Organic Modification ◽  
Spontaneous Deposition

A stable superhydrophobic surface was effectively fabricated on a copper substrateviaspontaneous deposition and annealing without organic modification.

Fabrication of Superhydrophobic Coatings on Copper Substrate

2012 ◽  
Vol 512-515 ◽  
pp. 1089-1092
Author(s):  
Hong Qin Liu ◽  
Wei Pan ◽  
Bao Cai Xu
Keyword(s):  
Constant Temperature ◽  
Growth Mechanism ◽  
Copper Substrate ◽  
Hierarchical Architecture ◽  
Superhydrophobic Coatings ◽  
Cupric Hydroxide

Cupric hydroxide films with new hierarchical architecture were directly fabricated on copper substrate via a solution-immersion process at a constant temperature of 23°C. Stable superhydrophobic Cu(OH)2 surface was obtained after Cu(OH)2 films were modified with hydrolyzed 1H, 1H, 2H, 2H-Perfluorooctyltrichlorosilane (C8H4Cl3F13Si, FOTMS). In addition, the growth mechanism of the cupric hydroxide films was further discussed.

Protective properties of superhydrophobic coatings on copper and steel obtained by electrochemical method

2021 ◽  
Vol 26 (1) ◽  
Keyword(s):  
Contact Angle ◽  
Copper Substrate ◽  
Copper Plate ◽  
Ethanol Solution ◽  
Cathodic Deposition ◽  
Sem Images ◽  
Protective Properties ◽  
Superhydrophobic Coatings ◽  
Water Wetting ◽  
Contact Angle Of Wetting

Superhydrophobic coatings are obtained by cathodic deposition of copper or nickel on a copper plate with treatment with an ethanol solution of highest carboxylic acids with a long hydrocarbon radical simultaneously or sequentially. They are characterized by a contact angle of water wetting of the order of 155...160°.These coatings protect the copper substrate from corrosion in conditions of 100% humidity for 100...180 days, while maintaining the contact angle within 152…154°. There is no mass loss. The influence of the reversal of the current during electrolysis on the value of the contact angle of wetting is investigated. SEM images of superhydrophobic coatings are presented, indicating multilevel roughness. Superhydrophobic coating on carbon steel is obtained by cathodic deposition of nickel and subsequent surface treatment in an ethanol solution of myristic acid and annealing at 60° for two hours. The influence of the duration of electrolysis on the value of the contact angle of wetting is estimated. Its value is in the range of 151…154°. Exposure of a coated steel plate for 50 days in conditions of 100% humidity is characterized by the absence of weight loss and maintaining the contact angle up to 154°.

Controllable Growth of Highly Oriented ZnO Nanorod Arrays on Copper by a Two-Step Route

2015 ◽  
Vol 1119 ◽  
pp. 137-141 ◽  
Author(s):  
Yong Mei Xia ◽  
You Fa Zhang ◽  
Xin Quan Yu ◽  
Feng Chen
Keyword(s):  
Low Temperature ◽  
Zno Nanorods ◽  
Copper Substrate ◽  
Phase Method ◽  
Zno Nanorod ◽  
Nanorod Arrays ◽  
Zno Nanorod Arrays ◽  
Temperature Solution ◽  
Controllable Growth ◽  
Solution Phase Method

Highly oriented and well-aligned ZnO nanorod arrays were synthesized by low-temperature solution phase method on copper substrate under different conditions. Results illustrated that dense ZnO nanorods were vertically and uniformly distributed on the substrate. The effects of precursor concentration, growth temperature and time on the morphologies of nanorod arrays were investigated systematically. It is demonstrated that the controllable growth of well-aligned ZnO nanorods can be realized by readily adjusting the preparation parameters. The high quality ZnO nanorod arrays could be achieved via the chemical approach at low temperature.

scholarly journals Deposition of Super-Hydrophobic Silver Film on Copper Substrate and Evaluation of Its Corrosion Properties

Coatings ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 1299
Author(s):  
Fani Stergioudi ◽  
Aikaterini Baxevani ◽  
Azarias Mavropoulos ◽  
Georgios Skordaris
Keyword(s):  
Potentiodynamic Polarization ◽  
Silver Film ◽  
Electrochemical Impedance ◽  
Copper Substrate ◽  
Film Structure ◽  
Silver Coating ◽  
Optimal Conditions ◽  
Corrosion Properties ◽  
Time Saving ◽  
Water Contact

A simple and versatile chemical solution deposition process is reported to manipulate the wettability properties of copper sheets. The whole process has the advantage of being time-saving low cost and environment-friendly. An adherent silver coating was achieved under optimal conditions. Scanning electron microscopy and X-ray diffraction were used to examine the silver film structure. A confocal microscope was used to record the 3D topography and assess the film roughness of the surface. A dual morphology was revealed, consisting of broad regions with feather-like structured morphologies and some areas with spherical morphologies. Such silver-coated copper samples exhibited a sufficiently stable coating with superhydrophobicity, having a maximum water contact angle of 152°, along with an oleophilic nature. The corrosion behavior of the produced hydrophobic copper under optimal conditions was evaluated by means of potentiodynamic polarization and electrochemical impedance spectroscopy (EIS) using a 3.5% NaCl solution. The corrosion protection mechanism was elucidated by the proposed equivalent circuits, indicating that the superhydrophobic silver coating acted as an effective barrier, separating the Cu substrate from the corrosive solution. The superhydrophobic coating demonstrated enhanced anti-corrosion properties against NaCl aqueous solution in relation to the copper substrate as indicated from both EIS and potentiodynamic polarization experiments.

Semi-automated methods for 3-D reconstruction of macromolecular complexes

1995 ◽  
Vol 53 ◽  
pp. 42-43
Author(s):  
B. Carragher ◽  
M. Whittaker
Keyword(s):  
Three Dimensional ◽  
Time Saving ◽  
Macromolecular Complexes ◽  
Symmetry Properties ◽  
Dimensional Reconstruction ◽  
Experienced Operator ◽  
Projection Images ◽  
The Individual ◽  
Natural Symmetry

Techniques for three-dimensional reconstruction of macromolecular complexes from electron micrographs have been successfully used for many years. These include methods which take advantage of the natural symmetry properties of the structure (for example helical or icosahedral) as well as those that use single axis or other tilting geometries to reconstruct from a set of projection images. These techniques have traditionally relied on a very experienced operator to manually perform the often numerous and time consuming steps required to obtain the final reconstruction. While the guidance and oversight of an experienced and critical operator will always be an essential component of these techniques, recent advances in computer technology, microprocessor controlled microscopes and the availability of high quality CCD cameras have provided the means to automate many of the individual steps.During the acquisition of data automation provides benefits not only in terms of convenience and time saving but also in circumstances where manual procedures limit the quality of the final reconstruction.

Time-saving patch test antigen dispenser

1970 ◽  
Vol 102 (3) ◽  
pp. 300-303
Author(s):  
N. Hjorth
Keyword(s):  
Patch Test ◽  
Time Saving ◽  
Test Antigen

Are Three Items Sufficient to Measure Sense of Coherence?

2018 ◽  
Vol 34 (4) ◽  
pp. 229-237 ◽  
Author(s):  
Francesca Chiesi ◽  
Andrea Bonacchi ◽  
Caterina Primi ◽  
Alessandro Toccafondi ◽  
Guido Miccinesi
Keyword(s):  
Sense Of Coherence ◽  
Convergent Validity ◽  
Clinical Sample ◽  
Clinical Samples ◽  
Depression Symptoms ◽  
Time Saving ◽  
Positive Role ◽  
Patients With Cancer ◽  
Measure Sense

Abstract. The present study aimed at evaluating if the three-item sense of coherence (SOC) scale developed by Lundberg and Nystrom Peck (1995) can be effectively used for research purpose in both nonclinical and clinical samples. To provide evidence that it represents adequately the measured construct we tested its validity in a nonclinical (N = 658) and clinical sample (N = 764 patients with cancer). Results obtained in the nonclinical sample attested a positive relation of SOC – as measured by the three-item SOC scale – with Antonovsky’s 13-item and 29-item SOC scales (convergent validity), and with dispositional optimism, sense of mastery, anxiety, and depression symptoms (concurrent validity). Results obtained in the clinical sample confirmed the criterion validity of the scale attesting the positive role of SOC – as measured by the three-item SOC scale – on the person’s capacity to respond to illness and treatment. The current study provides evidence that the three-item SOC scale is a valid, low-loading, and time-saving instrument for research purposes on large sample.

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