Atmospheric Ice Adhesion on Water-Repellent Coatings: Wetting and Surface Topology Effects

Langmuir ◽  
2015 ◽  
Vol 31 (48) ◽  
pp. 13107-13116 ◽  
Author(s):  
Yong Han Yeong ◽  
Athanasios Milionis ◽  
Eric Loth ◽  
Jack Sokhey ◽  
Alexis Lambourne
Keyword(s):  
Surface Topology ◽  
Water Repellent ◽  
Ice Adhesion

scholarly journals Coral-like silicone nanofilament coatings with extremely low ice adhesion

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Davide Bottone ◽  
Valentina Donadei ◽  
Henna Niemelä ◽  
Heli Koivuluoto ◽  
Stefan Seeger
Keyword(s):  
Energy Efficient ◽  
Efficient Solution ◽  
Water Repellent ◽  
Cold Environment ◽  
Adhesion Test ◽  
Porous Surfaces ◽  
Water Wettability ◽  
The Stability ◽  
Effect Of Surface ◽  
Ice Adhesion

AbstractPassive icephobic surfaces can provide a cost and energy efficient solution to many icing problems that are currently handled with expensive active strategies. Water-repellent surface treatments are promising candidates for this goal, but commonly studied systems, such as superhydrophobic surfaces and Slippery Liquid Infused Porous Surfaces (SLIPS), still face challenges in the stability and durability of their properties in icing environments. In this work, environmental icing conditions are simulated using an Icing Wind Tunnel, and ice adhesion is evaluated with a Centrifugal Adhesion Test. We show that superhydrophobic coral-like Silicone Nanofilament (SNF) coatings exhibit extremely low ice adhesion, to the point of spontaneous ice detachment, and good durability against successive icing cycles. Moreover, SNFs-based SLIPS show stably low ice adhesion for the whole duration of the icing test. Stability of surface properties in a cold environment is further investigated with water wettability at sub-zero surface temperature, highlighting the effect of surface chemistry on superhydrophobicity under icing conditions.

A Critical Review of Evaluation Methods of Ice Adhesion Strength on the Surface of Materials

2004 ◽  
Author(s):  
Mohammad R. Kasaai ◽  
Masoud Farzaneh
Keyword(s):  
Adhesion Strength ◽  
Critical Review ◽  
Water Repellent ◽  
Test Procedures ◽  
Force Microscopy ◽  
Nano Indentation ◽  
Lap Shear ◽  
Atomic Force ◽  
Long Time ◽  
Ice Adhesion

Several techniques have already been proposed to determine ice adhesion strength. This study made a critical review of the existing methods and proposed three other techniques for ice/substrate systems, where the latter techniques have already been used to other adhesive/substrate systems. In this study, these methods are compared for their performance and limitations, with a selection of the most promising ones. The main conclusions are: in most techniques, test procedures required a long time while showing a low degree of reproducibility. Cohesive and adhesive failures, as well as a combination of both, were observed in the measurements. Macroscopic or microscopic/nanoscopic scale tests were used to evaluate ice adhesion strength Micro/nano scale tests using Atomic Force Microscopy (AFM) or nano indentation instrument can be used to estimate the nature and surface energy of water-repellent materials, and identify materials with low-ice adhesion. Among various methods the combination of AFM /nano-indentation technique with either lap-shear or combined lap-shear and tensile modes should be the most powerful.

scholarly journals Ice adhesion of PDMS surfaces with balanced elastic and water-repellent properties

2021 ◽  
Author(s):  
Pablo F. Ibáñez-Ibáñez ◽  
F. Javier Montes Ruiz-Cabello ◽  
Miguel A. Cabrerizo-Vílchez ◽  
Miguel A. Rodríguez-Valverde
Keyword(s):  
Water Repellent ◽  
Ice Adhesion

Processing of human melanoma cells for correlative TEM, LVSEM, and LM

1991 ◽  
Vol 49 ◽  
pp. 106-107
Author(s):  
Marek Malecki ◽  
J. Victor Small ◽  
James Pawley
Keyword(s):  
Electron Microscopy ◽  
Low Voltage ◽  
Fluorescent Microscopy ◽  
Blood Stream ◽  
Surface Topology ◽  
Integrin Receptors ◽  
Transmission Electron ◽  
Develop Technology ◽  
Voltage Scanning ◽  
Mechanisms Of Adhesion

The relative roles of adhesion and locomotion in malignancy have yet to be clearly established. In a tumor, subpopulations of cells may be recognized according to their capacity to invade neighbouring tissue,or to enter the blood stream and metastasize. The mechanisms of adhesion and locomotion are themselves tightly linked to the cytoskeletal apparatus and cell surface topology, including expression of integrin receptors. In our studies on melanomas with Fluorescent Microscopy (FM) and Cell Sorter(FACS), we noticed that cells in cultures derived from metastases had more numerous actin bundles, then cells from primary foci. Following this track, we attempted to develop technology allowing to compare ultrastructure of these cells using correlative Transmission Electron Microscopy(TEM) and Low Voltage Scanning Electron Microscopy(LVSEM).

Water repellent also absorbs

Nature ◽  
2003 ◽  
Author(s):  
Philip Ball
Keyword(s):  
Water Repellent

Surface topology

2001 ◽  
Author(s):  
Peter A. Firby ◽  
Cyril F. Gardiner
Keyword(s):  
Surface Topology

In vitro validation of a 3-dimensional transrectal ultrasound system for prostate biopsiess

2007 ◽  
Vol 30 (4) ◽  
pp. 77
Author(s):  
Derek Cool ◽  
Shi Sherebrin ◽  
Jonathan Izawa ◽  
Joseph Chin ◽  
Aaron Fenster
Keyword(s):  
Prostate Biopsy ◽  
3D Model ◽  
Transrectal Ultrasound ◽  
Surface Topology ◽  
Sufficient Information ◽  
Needle Guidance ◽  
3 Dimensional ◽  
High Incidence ◽  
3D Information

Introduction: Transrectal ultrasound (TRUS) prostate biopsy (Bx) is currently confined to 2D information to both target and record 3D Bx locations. Accurate placement of Bx needles cannot be verified without 3D information, and recording Bx sites in 2D does not provide sufficient information to accurately guide the high incidence of repeat Bx. We have designed a 3D TRUS prostate Bx system that augments the current 2D TRUS system and provides tools for biopsy-planning, needle guidance, and recording of the biopsy core locations entirely in 3D. Methods: Our Bx system displays a 3D model of the patient’s prostate, which is generated intra-procedure from a collection of 2D TRUS images, representative of the particular prostate shape. Bx targets are selected, needle guidance is facilitated, and 3D Bx sites are recorded within the 3D context of the prostate model. The complete 3D Bx system was validated, in vitro, by performing standard ten-core Bx on anatomical phantoms of two patient’s prostates. The accuracy of the needle-guidance, Bx location recording, and 3D model volume and surface topology were validated against a CT gold standard. Results: The Bx system successfully reconstructed the 3D patient prostate models with a mean volume error of 3.2 ± 7.6%. Using the 3D system, needles were accurately guided to the pre-determined targets with a mean error of 2.26 ± 1.03 mm and the 3D locations of the Bx cores were accurately recorded with a mean distance error of 1.47 ± 0.79 mm. Conclusion: We have successfully developed a 3D TRUS prostate biopsy system and validated the system in vitro. A pilot study has been initiated to apply the system clinically.

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