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Journal articles on the topic 'Phobic coating'

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Author: Grafiati

Published: 10 December 2022

Last updated: 28 January 2023

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1

Zhang, Shu Ting, Hui Wang, and Lei Wang. "Progress in Ice-Phobic Coating." Advanced Materials Research 399-401 (November 2011): 2044–48. http://dx.doi.org/10.4028/www.scientific.net/amr.399-401.2044.

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This paper summarizes the test method of ice-phobic coating adhesion strength and the progress in coating material. Ice adhesion strength of several commercial ice-phobic coatings were tested for Pratt & Whitney, and result indicated that reformative silicone R-2180 show significantly improved reduction in ice adhesion when compared to several different commercially available silicone-based ice-phobic coatings. It would be valuable in future studies to measure the surface energies of the several materials tested to determine any correlation between the ice adhesion and surface energy of the coating.

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2

Lukpanov, R. E., D. S. Dyusembinov, D. V. Tsygulev, and S. B. Yenkebayev. "ASSESSMENT OF THE EFFECT OF ICE-PHOBIC IMPREGNATION COMPOSITION OF CEMENT-CONCRETE ROADS ON THE ADHESIVE RESISTANCE OF ICE CRUST TO CONCRETE." Bulletin of Kazakh Leading Academy of Architecture and Construction 84, no. 2 (June 15, 2022): 245–54. http://dx.doi.org/10.51488/1680-080x/2022.2-26.

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An ice-phobic impregnation composition of cement-concrete roads has been pro-posed. The composition is based on keratin-containing components with the addition of a water-soluble polymer. The test results showed the effectiveness of the ice-phobic coating, as in all exper-iments the uncoated samples showed greater resistance of the ice crust to thermal influences and a significant difference in water absorption capacity.

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3

Xie, Qiang, Tianhui Hao, Chao Wang, Zhenhang Kang, Zhonghua Shi, and Jifeng Zhang. "The Mechanical Mechanism and Influencing Factors of Ice Adhesion Strength on Ice-Phobic Coating." Journal of Marine Science and Engineering 9, no. 3 (March 12, 2021): 315. http://dx.doi.org/10.3390/jmse9030315.

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Ice accretion can cause problems on polar ships, ocean platforms, and in other marine industries. It is important to understand the interface debonding behavior between ice and the surface of equipment. In this work, we created a mechanical model to analyze the interface debonding behavior between a square-based ice cuboid and an elastic coating base, using contact mechanics and fracture mechanics. Three-dimensional (3D) finite element (FE) simulation was used to simulate the interface debonding for normal and shear separation. A bilinear cohesive zone model (CZM) was used to simulate the interface between the ice cuboid and the elastic coating. We investigated the effect of the elastic modulus E of an elastic film on the critical detachment force Fc for normal and shear separation. The results showed that Fc increases with an increase of the elastic modulus of the elastic film. When E exceeds a certain level, Fc achieves a constant value and then remains stable. Finally, a series of epoxy/polydimethylsiloxane (PDMS) interpenetrating polymer-network (IPN) gel coatings with different elastic moduli were prepared. The ice tensile and shear adhesion strengths (σice and τice) of the coatings were measured. The results were roughly consistent with the results of the numerical simulation when E < 1 MPa.

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4

Chen, Shuangshuang, Xuemin Lu, Ying Hu, and Qinghua Lu. "Biomimetic honeycomb-patterned surface as the tunable cell adhesion scaffold." Biomaterials Science 3, no. 1 (2015): 85–93. http://dx.doi.org/10.1039/c4bm00233d.

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PS honeycomb structured surfaces were modified into both cell-philic and cell-phobic by dip-coating and casting polySBMA, respectively, which was inspired by two typically adhesive behaviours of fish skin and Parthenocissus tricuspidata.

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5

Balordi, Marcella, Giorgio Santucci de Magistris, and Cristina Chemelli. "A Novel Simple Anti-Ice Aluminum Coating: Synthesis and In-Lab Comparison with a Superhydrophobic Hierarchical Surface." Coatings 10, no. 2 (January 28, 2020): 111. http://dx.doi.org/10.3390/coatings10020111.

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A simple process to obtain a slippery surface with anti-ice and ice-phobic properties has been developed and characterized in laboratory. The coating is realized by growing a nanostructured pseudo-boehmite on an aluminum substrate and applying an environmentally compatible final functionalization consisting of a fluorine-free oligomeric short-chain alkylfunctional silane. The resulting surface is conceptually similar to a slippery liquid infused porous surface (SLIP) material, but the porous infrastructure is inorganic and the process to generate it is very simple, rapid and economic. The coating performance in terms of hydrophobicity at room and low temperatures, ice nucleation temperature and ice adhesion forces were assessed in laboratory. Moreover, hydrophobicity persistence was tested after prolonged immersion in acid, basic and saline solutions while the durability of ice-phobic behavior was assessed by repeated shear stress tests. Results are compared with those of a superhydrophobic hierarchical aluminum surface obtained with a fluorinated siloxane. The novel coating shows very good anti-ice properties and relevant durability, with some differences from the fluorinated surface. The novel slippery coating process is promising for industrial applications, also taking into account its environmental compatibility, simplicity and low cost.

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6

Lukpanov, R. E., D. S. Dyusembinov, D. V. Tsygulev, and D. O. Bazarbaev. "Assessment of the effect of ice-phobic impregnation composition of cement-concrete poads on the adhesive resistance of ice crust to concrete." Bulletin of Kazakh Leading Academy of Architecture and Construction 79, no. 1 (March 30, 2021): 246–54. http://dx.doi.org/10.51488/1680-080x/2021.1-32.

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An ice-phobic impregnation composition of cement-concrete roads has been proposed. The composition is based on keratin-containing components with the addition of a water-soluble polymer. The evaluation criterion was the study of the adhesion resistance of ice crust to concrete. The test results showed the effectiveness of the ice-phobic coating since in all experiments the uncoated samples showed greater resistance of the ice crust to thermal influences. The water absorption test results showed a significant difference in the water absorption capacity of the uncoated specimens compared to the coated specimens.

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7

Lukpanov, Rauan, Duman Dyusembinov, Zhanbolat Shakhmov, Denis Tsygulov, Yelaman Aibuldinov, and Nikolai Ivanovich Vatin. "Impregnating Compound for Cement-Concrete Road Pavement." Crystals 12, no. 2 (January 24, 2022): 161. http://dx.doi.org/10.3390/cryst12020161.

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The paper proposes an impregnation composition for cement concrete roads used as an ice-phobic coating. The composition has been made based on keratin-containing components derived from animal waste with the addition of water-soluble polymers. The main parameter of serviceability of the coating impregnated with the developed composition was assessing the adhesion resistance of ice crust to concrete under the influence of mechanical loads. For this purpose, tests of big specimens (surface area 1925 cm2) in laboratory conditions with application of vibration and impact loads and modelling of thermal stresses were conducted. The test results showed the effectiveness of the ice-coating, as in all experiments, the uncoated specimens showed a greater resistance of the ice crust to mechanical stresses. An additional evaluation parameter was comparing the water absorption capacity of coated and uncoated concrete. The test results showed a significant difference in the water absorption capacity of the uncoated specimens, exceeding the coated specimens by 47%. Due to the results obtained, it will be possible to use the impregnation compound effectively to improve the ice resistance of cement concrete coatings.

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8

Lyu, Sungnam, and Woonbong Hwang. "Selective superhydrophilic/phobic coating using capillary pressure for positive-displacement nanoliter dispensing." Surface and Coatings Technology 277 (September 2015): 258–61. http://dx.doi.org/10.1016/j.surfcoat.2015.07.067.

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9

Morita, Katsuaki, Shigeo Kimura, and Hirotaka Sakaue. "Hybrid System Combining Ice-Phobic Coating and Electrothermal Heating for Wing Ice Protection." Aerospace 7, no. 8 (July 22, 2020): 102. http://dx.doi.org/10.3390/aerospace7080102.

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In-flight icing for aircraft is a large concern for all those involved in aircraft operations. Generally, an electric heater has been used to prevent in-flight icing. A hybrid anti-icing system combining ice-phobic coating and electrothermal heating (ICE-WIPS) has been proposed by the Japan Aerospace Exploration Agency (JAXA) to reduce the power consumption in the heating unit. In order to validate the effectiveness of ICE-WIPS, validation and demonstration tests are conducted using icing wind tunnels at the Kanagawa Institute of Technology (KAIT) and at the Icing Research Tunnel in the NASA Glenn Research Center. Using a NACA0012 airfoil as a test model, ICE-WIPS demonstrates substantial reduction in power consumption as compared to the existing heating system. The reduction depends on the in-flight icing conditions; more than a 70% reduction is achieved at a liquid-water content (LWC) of 0.6 g/m3 and a median-volume diameter (MVD) of 15 μm at 75 m/s with zero angle of attack. In wet-icing conditions, more than a 30% reduction in power is achieved.

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10

Lukpanov, R. E., D. V. Tsygulyov, D. S. Dyusembinov, and S. B. Yenkebayev. "ASSESSMENT OF THE EFFECT OF MODIFIED ADDITIVES ON THE HOMOGENEITY OF AERATED CONCRETE BY LABORATORY TESTS." Bulletin of Kazakh Leading Academy of Architecture and Construction 83, no. 1 (January 15, 2022): 160–69. http://dx.doi.org/10.51488/1680-080x/2022.1-12.

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The article presents the results of the research of impregnation composition for concrete roads, which allows to improve the ice-phobic properties of the coating. The impregnating composition is based on keratin-containing components and water-soluble polymer. Studies of qualitative indicators of the composition were carried out in laboratory conditions: determination of the optimal water concentrate of impregnation composition was made by measuring water absorption capacity of samples, and the assessment of durability (wear resistance to mechanical impacts or percentage of abrasion) was carried out by model tests with wheel loadings.

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11

Ng, Yeap-Hung, Siok Wei Tay, and Liang Hong. "Ice-phobic polyurethane composite coating characterized by surface micro silicone loops with crumpling edges." Progress in Organic Coatings 172 (November 2022): 107058. http://dx.doi.org/10.1016/j.porgcoat.2022.107058.

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12

Lukpanov, R. Е., D. S. Dyussembinov, D. O. Bazarbayev, D. V. Tsygulyov, and S. B. Yenkebayev. "Impregnation composition for cement-concrete road pavement to improve its ice-phobic properties." BULLETIN of L.N. Gumilyov Eurasian National University. Technical Science and Technology Series 134, no. 1 (2021): 39–49. http://dx.doi.org/10.32523/2616-7263-2021-134-1-39-49.

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The article proposes an impregnation composition for cement concrete roads used to improve the ice-phobic properties of the pavement. The composition is based on the keratin production technology. The distinctive component of the composition is the addition of water-soluble polymers. One of the study criteria was to evaluate the performance of the impregnation composition, its adhesion resistance to mechanical impact. Tests were conducted for large samples (surface area 1925 cm2) in laboratory conditions with the application of vibration and shock loads. The test results showed the effectiveness of the ice-resistant coating, as in all experiments the uncoated specimens showed greater resistance of the ice crust to mechanical stress.

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13

Gurera, Dev, and Bharat Bhushan. "Fabrication of bioinspired, self-cleaning, anti-icing, superliquiphilic/phobic titanium using different pathways." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 377, no. 2138 (December 24, 2018): 20180273. http://dx.doi.org/10.1098/rsta.2018.0273.

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Titanium is an important material having a high tensile strength-to-density ratio and high corrosion resistance. It has found applications in the aerospace, marine, automotive and biomedical industries. In some of the applications, it is important to have it as a highly liquid repellent, anti-icing and self-cleaning. There have been several attempts to make titanium superliquiphobic. The common pathways include chemical etching and anodizing. However, important characteristics such as self-cleaning, anti-icing and durability have not been investigated. If any durability data were reported, it was poor. In the current study, various superliquiphilic/phobic surfaces were fabricated using three pathways which include chemical etching, anodizing and nanoparticle-binder coating. Each surface was characterized for wettability, self-cleaning, anti-icing, self-cleaning properties and durability. This article is part of the theme issue ‘Bioinspired materials and surfaces for green science and technology’.

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14

OBŠEL, Vladimír, and Pavel OTŘÍSAL. "Application of Methods of Preparation of Plasmo-Chemical Nanocoatings Designated to Hydrophobic and Oleo Phobic Correction of Surface Working of Textile Materials for Filtration Protective Suit." Challenges to national defence in contemporary geopolitical situation 2022, no. 1 (October 31, 2022): 275–87. http://dx.doi.org/10.47459/cndcgs.2022.35.

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he possibility of creation of nanocoatings with hydrophobic or oleo phobic properties on textiles materials designated for protective suits with plasma-chemical procedures with the employment pf atmospheric plasma without vacuum has been verified. On four samples of selected textile materials without any additional modification (Ba, PES+Ba, PES+Ba+Nomex, Ba+Nomex) has been at the Masaryk´s University (MU) in Brno applied with a plasma nozzle with ten different ways nanocoatings based on siloxane (HMDSO, OMCTS) and nanoglass. Prepared samples have been assessed at the MU in Brno even from the behaviour against freely lying drops of the sulphur mustard point of view. At the Military Technical Institute of Protection (VTUO) some selected samples have been subsequently evaluated even from the behaviour of freely lying drops of sulphur mustard. Supposed behaviour of the Chemical Warfare Agent (CWA) of the VX type, sulphur mustard and Soman have been simulated within selected samples with observation of freely lying drops of the olive oil, nitrobenzene, and propanol with similar values of the surface tension as above-mentioned CWA. Founded values of contact angles have been compared with contacts values of contacts angles founded in the scope of two developed materials of the coating textiles for modernized filtration protective garment with classical hydrophobic or oleo phobic modification which have been provided with the company of B.O.I.S. – Filtry, Ltd. Within all samples the change of contact angles in time and also the homogeneity of the modification have been considered. The stability and mechanical sustainability of applied sets against washing has not been evaluated. It has been proved that with the help of plasma-chemical modification is possible to prepare nanocoatings even with ultra-hydrophobic (the contact angle for water is bigger than 150 °) and super oleo phobic (the contact angle for water is bigger than 136 °) properties on suitable textile materials. The best results, so called the effect of a lotus flower, have been reached mainly within two samples of textile materials contented a part of nomex fibes.

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15

Mao, Wentao, Baolei Qiao, Qinggang Kong, Wenjun He, and Haiyan Qian. "High flux durability underwater superoleophobic mesh modified by poly (maleic acid mono-(2-(dimethylamino)-ethyl ester-co-hydroxyethyl acrylate) and nanosilica particles hybrid." Materials Research Express 9, no. 10 (October 1, 2022): 105501. http://dx.doi.org/10.1088/2053-1591/ac9817.

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Abstract It is difficult to separate oil-polluted water mixtures, which has been considered a global problem. In this study, a simple dip-coating process was used to produce a stainless-steel mesh coated with poly (malaic acid mono-(2-(dimethylamino)-ethyl ester-co-hydroxyethyl acrylate)-tetraethyl orthosilicate-silica (P(MDME-co-HEA)-TEOS-SiO2). The membrane’s shape, chemical composition, separation capabilities, and mechanical properties were carefully examined. The membrane was extremely hydrophilic and extremely oil-phobic underwater due to its rough surface structure and hydrophilic chemical composition. For petroleum ether/water mixture, the separation flux of the membrane reached 224,600 l·m−2·h−1, with a 99.96% separation efficiency. The coated mesh also presented outstanding anti-oil fouling performance. Moreover, it exhibited excellent mechanical resistance and chemical stability.

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16

Mora, J., P. García, R. Muelas, and A. Agüero. "Hard Quasicrystalline Coatings Deposited by HVOF Thermal Spray to Reduce Ice Accretion in Aero-Structures Components." Coatings 10, no. 3 (March 20, 2020): 290. http://dx.doi.org/10.3390/coatings10030290.

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Weather hazards, in particular icing conditions, are an important contributing factor in aviation accidents and incidents worldwide. Many different anti-icing strategies are currently being explored to find suitable long-lasting solutions, such as surface engineering, which can contribute to reduce ice accumulation. Quasicrystals (QCs) are metallic materials, but with similar properties to those of ceramic materials, such as low thermal and electrical conductivities, and high hardness. In particular, QCs that have low surface energy are commercially used as coatings to replace polytetrafluoroethylene (PTFE), also known as Teflon, on frying pans, as they do not scratch easily. PTFE exhibits excellent anti-wetting and anti-icing properties and therefore QCs appear as good candidates to be employed as ice-phobic coatings. Al-based QCs have been applied by High Velocity Oxyfuel (HVOF) thermal spray on typically used aeronautic materials, such as Ti and Al alloys, as well as steels. The coatings have been characterized and evaluated, including the measurement of hardness, roughness, wetting properties, ice accretion behavior in an icing wind tunnel (IWT), and ice adhesion by a double lap shear test. The coatings were studied, both as-deposited, as well as after grinding, in order to study the effect of the surface roughness and morphology on the ice accretion and adhesion properties. The QC coating was compared with PTFE and two polyurethane (PU)-based commercial paints, one of them known to have anti-icing properties, and the results indicate an ice accretion reduction relative to these two materials, and ice adhesion lower than bare AA6061-T6, or the PU paint in the ground version of one of the two QCs. Since the QC coatings are hard (GPa Vickers hardness > 5), a durable behavior is expected.

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17

Gao, Linyue, Yang Liu, Liqun Ma, and Hui Hu. "A hybrid strategy combining minimized leading-edge electric-heating and superhydro-/ice-phobic surface coating for wind turbine icing mitigation." Renewable Energy 140 (September 2019): 943–56. http://dx.doi.org/10.1016/j.renene.2019.03.112.

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18

Zhang, Zichen, Liqun Ma, Yang Liu, Juan Ren, and Hui Hu. "An experimental study of rain erosion effects on a hydro-/ice-phobic coating pertinent to Unmanned-Arial-System (UAS) inflight icing mitigation." Cold Regions Science and Technology 181 (January 2021): 103196. http://dx.doi.org/10.1016/j.coldregions.2020.103196.

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19

Sojoudi, Hossein, Hadi Arabnejad, Asif Raiyan, Siamack A. Shirazi, Gareth H. McKinley, and Karen K. Gleason. "Scalable and durable polymeric icephobic and hydrate-phobic coatings." Soft Matter 14, no. 18 (2018): 3443–54. http://dx.doi.org/10.1039/c8sm00225h.

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20

Zhu, Lin, Jian Xue, Yuanyi Wang, Qingmin Chen, Jianfu Ding, and Qingjun Wang. "Ice-phobic Coatings Based on Silicon-Oil-Infused Polydimethylsiloxane." ACS Applied Materials & Interfaces 5, no. 10 (May 3, 2013): 4053–62. http://dx.doi.org/10.1021/am400704z.

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21

Arianpour, F., M. Farzaneh, and R. Jafari. "Hydrophobic and ice-phobic properties of self-assembled monolayers (SAMs) coatings on AA6061." Progress in Organic Coatings 93 (April 2016): 41–45. http://dx.doi.org/10.1016/j.porgcoat.2015.12.008.

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22

Balordi, M., F. Pini, and G. Santucci de Magistris. "Superhydrophobic ice-phobic zinc surfaces." Surfaces and Interfaces 30 (June 2022): 101855. http://dx.doi.org/10.1016/j.surfin.2022.101855.

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23

Manabe, Kengo, Emiko Koyama, and Yasuo Norikane. "Cephalopods-Inspired Rapid Self-Healing Nanoclay Composite Coatings with Oxygen Barrier and Super-Bubble-Phobic Properties." ACS Applied Materials & Interfaces 13, no. 30 (July 20, 2021): 36341–49. http://dx.doi.org/10.1021/acsami.1c09588.

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24

He, Zhoukun, Xiaorong Lan, Qinsheng Hu, Hongmei Li, Luming Li, and Jiayan Mao. "Antifouling strategies based on super-phobic polymer materials." Progress in Organic Coatings 157 (August 2021): 106285. http://dx.doi.org/10.1016/j.porgcoat.2021.106285.

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25

BAGNOLI, P. E., N. BEVERINI, E. CASTORINA, E. FALCHINI, R. FALCIAI, V. FLAMINIO, E. MACCIONI, et al. "FIBER LASER HYDROPHONES AS PRESSURE SENSORS." International Journal of Modern Physics A 21, supp01 (July 2006): 102–6. http://dx.doi.org/10.1142/s0217751x06033441.

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The development of hydro-phonic sensors for deep see acoustic detection is described. The sensitive element is an erbium-doped single mode fiber laser, with the cavity delimited by two Bragg grating reflectors. The variations of temperature and pressure perturb the cavity, inducing a wavelength shift. The very narrow emission band of the laser, together with the interferometric detection technique, allows a dynamic pressure sensitivity in the μ Pa range. The devices have been characterized both optically and acoustically in a closed tub. A resin coating of the fiber laser has been experimented: this technique improves the sensitivity by more than one order of magnitude. The high sensitivity makes these sensors suitable for the detection of the acoustic waves induced in water by Ultra High Energy Neutrinos.

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26

Herlambang, Penggalih Mahardika, Nanang Wiyono, Hendry Gunawan, and Rani Tiyas Budiyanti. "POTENTIAL USE OF VIRTUAL REALITY IN OVERCOMING NEEDLE PHOBIA IN COVID-19 VACCINATION." DIPONEGORO MEDICAL JOURNAL (JURNAL KEDOKTERAN DIPONEGORO) 10, no. 6 (November 30, 2021): 396–400. http://dx.doi.org/10.14710/dmj.v10i6.31504.

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Background: Vaccination is very important because it can help prevent diseases that can be prevented by immunization (PD3I) such as polio, tetanus, diphtheria, measles, mumps, and rubella. During the Coronavirus Disease -19 (COVID-19) pandemic, the role of vaccination is very crucial, especially to reach herd immunity. However, there are many problems related to the implementation of vaccination, including needle phobia, which is a phobia of needles because it is considered painful. Virtual reality is a technology that develops in the form of a virtual image that can be used in vaccination services. This study aims to determine the potency of virtual reality to solve the needle phobia in vaccination services.Methods: The method used in this study is a literature review with sources from journals in the Scopus, ProQuest, and ScienceDirect database that was published in 2000 until 2020, and also books and articles with the keywords "virtual reality" "AND" "immunization," virtual reality " AND " vaccination " , "Needle phobia" "AND" "vaccination". This research was conducted from January to February 2021.Results: Based on the results obtained, virtual reality can be used in vaccination services, especially in the treatment of needle phobia. Virtual reality can become a distraction so that the patient will be distracted from fear and can lower the pain threshold. In addition, virtual reality can also be used as a means of education about immunization.Conclusion: Product development and clinical research need to be developed to assess the use of virtual reality in vaccination services during the COVID-19 pandemic. The use of virtual reality for other medical procedures that use needles can also be further investigated

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27

Arianpour, F., S. Farhadi, and M. Farzaneh. "Effect of heterogeneity on hydro/ice-phobic properties of alkylsilane/fluoro-alkylsilane-based coatings on Al substrates." Journal of Coatings Technology and Research 14, no. 1 (September 14, 2016): 267–75. http://dx.doi.org/10.1007/s11998-016-9819-z.

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Arianpour, Faranak, Shahram Farhadi, Masoud Farzaneh, and Reza Jafari. "Erratum to: Effect of heterogeneity on hydro/ice-phobic properties of alkylsilane/fluoro-alkylsilane-based coatings on Al substrates." Journal of Coatings Technology and Research 14, no. 1 (January 2017): 277. http://dx.doi.org/10.1007/s11998-016-9901-6.

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Lim, Dong-Jin, and Hong-Jun Kim. "Microneedles in Action: Microneedling and Microneedles-Assisted Transdermal Delivery." Polymers 14, no. 8 (April 15, 2022): 1608. http://dx.doi.org/10.3390/polym14081608.

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Human skin is a multilayered physiochemical barrier protecting the human body. The stratum corneum (SC) is the outermost keratinized layer of skin through which only molecules with less or equal to 500 Da (Dalton) in size can freely move through the skin. Unfortunately, the conventional use of a hypothermic needle for large therapeutic agents is susceptible to needle phobia and the risk of acquiring infectious diseases. As a new approach, a microneedle (MN) can deliver therapeutically significant molecules without apparent limitations associated with its molecular size. Microneedles can create microchannels through the skin’s SC without stimulating the proprioceptive pain nerves. With recent technological advancements in both fabrication and drug loading, MN has become a versatile platform that improves the efficacy of transdermally applied therapeutic agents (TAs) and associated treatments for various indications. This review summarizes advanced fabrication techniques for MN and addresses numerous TA coating and TA elution strategies from MN, offering a comprehensive perspective on the current microneedle technology. Lastly, we discuss how microneedling and microneedle technologies can improve the clinical efficacy of a variety of skin diseases.

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30

Cremaldi, Joseph, and Bharat Bhushan. "Fabrication of bioinspired, self-cleaning superliquiphilic/phobic stainless steel using different pathways." Journal of Colloid and Interface Science 518 (May 2018): 284–97. http://dx.doi.org/10.1016/j.jcis.2018.02.034.

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Conceição, Maurício Duarte da, Fernanda Salgueiredo Giudice, and Lucas de Francisco Carvalho. "Protocol for treating the psychological consequences of halitosis complaint." Brazilian Journal of Periodontology 31, no. 1 (April 1, 2021): 89–108. http://dx.doi.org/10.14436/0103-9393.31.1.089-108.oar.

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INTRODUCTION: People with halitosis suffer various consequences, incurring social, professional, and affective limitations that impair their confidence, spontaneity, and self-esteem. However, the existing treatment protocols focus on treating halitosis alone, rather than its psychological consequences. OBJECTIVE: The objective of this study is to present a new protocol for treating the consequences of halitosis, as well as investigating its clinical application. METHODS: After briefly reviewing existing halitosis classifications and their limitations, this paper presents new classifications and techniques appropriate for the present protocol, such as the use of in vivo exposure, adequate to halitosis treatment. A total of 156 people complaining of halitosis were selected. The participants breath was evaluated using the organoleptic test and Halimeter®. The psychological consequences of halitosis were assessed using the Halitosis Consequences Inventory (ICH). The symptoms of Social Anxiety Disorder (SAD) were measured using the Social Phobia Inventory (SPIN) and its short version (Mini-SPIN). RESULTS: The results showed that all participants had tongue coating or tongue biofilm. Of the 156 volunteers, 74.38% had halitosis (n=116), of whom 100% had oral halitosis, and 3.21% had oral halitosis simultaneous with extraoral halitosis (n=5). A comparison between the pre- and post-treatment results indicated that the protocol was effective to treat bad breath as well as the feeling of insecurity, since significantly decreased the psychological consequences of halitosis and SAD symptoms; 62.6% of participants reported a significant improvement in their confidence and spontaneity at the end of treatment. CONCLUSION: Taken together, these findings were most effective for those who followed the treatment guidelines strictly.

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Kozera, Rafał, Bartłomiej Przybyszewski, Katarzyna Żołyńska, Anna Boczkowska, Bogna Sztorch, and Robert E. Przekop. "Hybrid Modification of Unsaturated Polyester Resins to Obtain Hydro- and Icephobic Properties." Processes 8, no. 12 (December 11, 2020): 1635. http://dx.doi.org/10.3390/pr8121635.

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Ice accumulation is a key and unsolved problem for many composite structures with polymer matrices, e.g., wind turbines and airplanes. One of the solutions to avoid icing is to use anti-icing coatings. In recent years, the influence of hydrophobicity of a surface on its icephobic properties has been studied. This solution is based on the idea that a material with poor wettability maximally reduces the contact time between a cooled drop of water and the surface, consequently prevents the formation of ice, and decreases its adhesion to the surface. In this work, a hybrid modification of a gelcoat based on unsaturated polyester resin with nanosilica and chemical modifiers from the group of triple functionalized polyhedral oligomeric silsesquioxanes (POSS) and double organofunctionalized polysiloxanes (generally called multi-functionalized organosilicon compounds (MFSC)) was applied. The work describes how the change of modifier concentration and its structural structure finally influences the ice phobic properties. The modifiers used in their structure groups lowered the free surface energy and crosslinking groups with the applied resin, lowering the phenomena of migration and removing the modifier from the surface layer of gelcoat. The main studies from the icephobicity point of view were the measurements of ice adhesion forces between modified materials and ice. The tests were based on the measurements of the shear strength between the ice layer and the modified surface and were conducted using a tensile machine. Hydrophobic properties of the obtained nanocomposites were determined by measurement of the contact angle and contact angle hysteresis. As the results of the work, it was found that the modification of gelcoat with nanosilica and multi-functionalized silicone compounds results in the improvement of icephobic properties when compared to unmodified gelcoat while no direct influence of wettability properties was found. Ice adhesion decreased by more than 30%.

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Cook, Emma, and Karin Tochkov. "Does Social Anxiety Affect Student Learning?" Advances in Social Sciences Research Journal 9, no. 11 (November 25, 2022): 266–71. http://dx.doi.org/10.14738/assrj.911.13448.

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In 1994, social anxiety was added to the Diagnostic and Statistical Manual as another term for social phobia (Bögels et al., 2010). More recent editions of the DSM define social anxiety disorder as a persistent fear of situations in which the patient may be exposed to unfamiliar people or potential review by others and causes those who suffer from it to either avoid social situations or endure them with high levels of anxiety. Those who suffer from social anxiety engage in consistent monitoring of their own behavior to avoid displaying any signs of their anxiety (Richards, 2022). While this fear is typically associated with only social or performance situations, social anxiety may also influence student learning as well. The conductors of this study hypothesize that students with social anxiety disorder may process less of the information that is presented to them in a classroom setting due to consistently monitoring their own behavior. These same students may also avoid asking clarifying questions within the classroom or seeking help outside of the classroom setting for fear of being viewed negatively by either their professor or their peers. The conductors of this study propose an online survey which will record participants’ responses to a Social Interaction Anxiety Scale, as well as their GPA scores, and responses to questions regarding their coping mechanisms and how often they ask questions in the classroom and seek outside help with their classes. A literature review is conducted, and an explanation of the methods and materials used is provided, as well as their purpose. The limitations of the study are reported, along with measures the conductors have taken to minimize the effects of these limitations.

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Mfon, R. E., Z. Al Amri, and A. Sarua. "ELECTRODEPOSITION OF SILVER THIN FILMS ON A GOLD SUBSTRATE IN THE PRESENCE OF OCIMUM GRATISSIMUM (Og) AND VERNONIA AMYGDALINA (Va) PLANT LEAF EXTRACTS." European Journal of Physical Sciences 4, no. 1 (March 12, 2021): 1–14. http://dx.doi.org/10.47672/ejps.675.

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Electrodeposition an advanced thin film deposition method originally used for decorative purposes and now widely used in industrial applications such as electronics, phonics, magnetic recording and protective coatings, has also been used for the production of size and structure-controlled nanoparticles. In this research, the electrodeposition of silver (Ag) films on gold (Au) substrates with two plant (Ocimum gratissimum (Og) and Vernonia amygdalina (Va) leaf extracts as additives was explored . The effect of these leaf extracts immediately after addition and after a prolonged exposure in the electrolyte on the silver deposits was studied using cyclic voltammetry (CV), chronoamperometry (CA) and linear sweep voltammetry (LSV). Silver thin films were electrodeposited on gold film from an electrolyte of 5 mM AgNO3 and later 5 mM AgNO3 +0.1 M KNO3 for 10 minutes, using a double potential step protocol and potentials -0.15 V and -0.3 V with and without the plant leaf extracts. As silver was grown on the gold substrate, silver nanoparticles were also discovered to have been formed in the electrolyte. Though the deposition potential in the presence of the plant leaf extracts affected the kinetics of the silver deposition on the gold substrate, it only slightly affected the silver film thickness on the gold. CV graphs with the plant leaf extracts show lower current densities indicating a slowing down of the deposition/dissolution rates of silver probably due to the adsorption of the leaf extracts on the surface of the growing silver films which may have affected the transport of silver ions (Ag+) towards the electrode and impacted on the silver deposition/dissolution kinetics. The deposited silver film thickness was 7 nm to 8 nm with the Og leaf extract and 1.5 nm to 2 nm with the Va leaf extract. Atomic Force microscope (AFM) was used for viewing the silver films and the mean grain sizes of the Og silver films was calculated to be . This was larger than those of the Va silver films calculated to be While the Va silver films surface roughness was higher at 10.6 , that of the Og silver film was 9.3.

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Martinsen, M., K. O. Hed, J. S. Diget, and H. L. Lein. "A novel approach for the evaluation of ice release performance of coatings using static friction measurements." Journal of Coatings Technology and Research, December 18, 2020. http://dx.doi.org/10.1007/s11998-020-00431-3.

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AbstractAtmospheric icing on structures and equipment represents a challenge for operation and safety. Passive ice removal by ice-phobic coatings has received much attention over the last decades. The current state-of-the-art methods for quantifying the ice-release properties of such coatings suffer from a range of drawbacks, including poor reproducibility and high complexity test setups. Here, a facile rotational tribometer approach for measuring the static friction between polymeric coatings and ice is presented. The torque necessary to initiate motion at the coating-ice interphase was used as a measure of ice release. For a polydimethylsiloxane-based coating (Sylgard 184), the effects of ice-temperature, normal force, coating thickness, and dwell time (contact time between coating and ice at rest with fully applied normal force prior to applying torque) were established along with the conditions resulting in least data variation. With these conditions, tribology-based friction measurements were carried out on two additional coatings; a two-component polyurethane, and a commercial foul release coating. The outcome of the method, i.e., grading of the coatings in terms of antiicing effect, matched those obtained with a widely used ice adhesion test method based on ice shear adhesion testing. The same trends are revealed by the two methods. However, the findings from the proposed tribology-based method result in consistently lower variation in outcomes and offer more detail on the ice adhesion and friction mechanisms.

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Jamil, Muhammad Imran, Tao Qian, Waqar Ahmed, Xiaoli Zhan, Fengqiu Chen, Dangguo Cheng, and Qinghua Zhang. "Durable Hydrate-phobic Coating with In Situ Self-Replenishing Hydrocarbon Barrier Films for Low Clathrate Hydrate Adhesion." Langmuir, September 15, 2022. http://dx.doi.org/10.1021/acs.langmuir.2c01359.

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Ma, Liqun, Zichen Zhang, and Hui Hu. "Experimental Investigation on the Wind-driven Runback Motion of Water Droplets over Solid Surfaces with Different Wettabilities." 14th International Symposium on Particle Image Velocimetry 1, no. 1 (August 1, 2021). http://dx.doi.org/10.18409/ispiv.v1i1.41.

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Aircraft icing is widely recognized as one of the most serious weather hazards to flight safety. Specially designed hydro-/ice-phobic coatings are currently undergoing development for aircraft icing mitigation. It was found that hydro-/icephobic coatings would delay the ice accretion iover airframe surfaces so that the impacted supercooled water droplets could be blown away by the airflow from the airframe surface before being frozen into ice. It is of fundamental importance to understand the wind-driven runback behavior of water droplets over surfaces treated with different coatings, since the corresponding knowledge would be very helpful and essential to develop more efficient anti-/de-icing systems for aircraft icing protection. With the rapid development of surface engineering, a series of specially designed surface coatings succeed in icing mitigation using airflow to remove the remained water. While various hydro-/ice-phobic coatings/surfaces have been developed in recent years, the “state-of-the-art” icephobic coatings/surfaces can be generally divided into three categories, i.e., 1). Lotus-leaf-inspired superhydrophobic surfaces (SHS) with micro-/nano-scale surface textures to achieve very high contact angles (typically > 150°); 2). Pitcherplant-inspired slippery liquid infused porous surfaces (SLIPS) with a layer of liquid lubricant (which is immiscible with water) being sandwiched between ice and solid substrate materials; and 3). Icephobic elastic materials/surfaces with deformable structures/surfaces. SHS has a water droplet contact angle (CA) larger than 150° and a sliding angle (SA) less than 10° . SHS always has a hierarchical structure which is similar to the lotus leaf, and water droplets on SHS appear as water beads which can easily roll off the surface by wind or gravity before frozen. Another strategy to reduce ice adhesion strength to a solid surface is to use a layer of liquid lubricant, which is immiscible with water, between ice and the solid surface. The use of such lubricated surfaces was investigated as early as 1960s, and has gained increasing attentions again recently with the introduction of a concept called Slippery Liquid-Infused Porous Surfaces (SLIPS). SLIPS concept is inspired by the Nepenthes pitcher plants, which have evolved highly slippery, liquidinfused micro-textured rim to capture insects. SLIPS surfaces were not only found to be able to suppress ice/frost accretion by effectively removing condensed moisture even in high humidity conditions, but also exhibit at least an order of magnitude lower ice adhesion than most SHS coatings. More recently, elastic materials/surfaces, such as Polydimethylsiloxane or PDMS in short, which would be structurally deformed/altered dynamically upon applying extra mechanical stress, have also been suggested for icing mitigation. Elastic materials display ultra-low adhesion to ice due to their low work of adhesion and liquidlike deformability, while maintaining good mechanical durability due to their solid-like rigidity. It is found that water droplets would not only be more readily rebounding away from the surface after impingement, but also be able to roll away before frozen due to the hydrophobicity of PDMS. Considering the differences in wettabilities and mechanisms of water repellency, it is necessary to have a systematic understanding of how efficient the surfaces are when the aerodynamic force is applied to remove the adhered water droplets. In the present study, a comprehensive experimental campaign was conducted to characterize the transient runback behaviors of wind-driven water droplets over the surfaces of test plates coated with different hydro-/icephobic coatings (i.e., SHS, SLIPS and PDMS). A high-resolution Particle Image Velocimetry (PIV) system was used to achieve quantitative measurements of the velocity field of the airflow around the wind-driven water droplets on the test surfaces with different wettabilities. With the detailed PIV measurements of the airflow field around the runback water droplets and the droplet profiles, the aerodynamic forces and the adhesion forces acting on the water droplets were estimated. While Fig. 1 shows the experimental setup used in the present study, Fig. 2 to Fig. 3 given some of the typical measurement results. More measurement results and comprehensive analysis and discussions will be provided in the full version of this research paper.

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Brown, Philip S., and Bharat Bhushan. "Bioinspired, roughness-induced, water and oil super-philic and super-phobic coatings prepared by adaptable layer-by-layer technique." Scientific Reports 5, no. 1 (September 10, 2015). http://dx.doi.org/10.1038/srep14030.

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Paul, Sudipta, Debolina Chakraborty, Sumaiya Jannat Esha, and Mohammad Nasim Hasan. "Role of wettability contrast on nanoscale condensation over hybrid wetting surface with gradient and patterned wetting configuration at various philic-phobic content." Surfaces and Interfaces, October 2022, 102417. http://dx.doi.org/10.1016/j.surfin.2022.102417.

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