Academic literature on the topic 'Shark skin'

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Journal articles on the topic "Shark skin"

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Knight, K. "SHARK SKIN PRODUCES PROPULSION." Journal of Experimental Biology 215, no. 5 (2012): i. http://dx.doi.org/10.1242/jeb.070698.

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Han, Xin, and Juan Wang. "A Novel Method for Fabrication of the Biomimetic Shark-Skin Coating." Advanced Materials Research 239-242 (May 2011): 3014–17. http://dx.doi.org/10.4028/www.scientific.net/amr.239-242.3014.

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The shark-skin effect motivated from the dermal surface morphology of sharks hastens the imitation and manufacture of the non-smooth drag reduction bionic coating based on shark skin. The fabrication of the bionic shark-skin coating with life-sized scale-like microstructure was presented in this paper. Using hot embossing technology, the direct micro replication of the microstructure on shark skin was investigated for the first time. Modeled after the shark skin sample, the negative structure was directly replicated and printed on PMMA flat plate in the hot embossing process, relied on which the bionic shark-skin coating made of silica gel was fabricated in the end. The preliminary experiment results indicate that this method is a high precision, high throughput, high efficiency and low cost way to fabricate bionic microstructure in micron and submicron scale with good repeatability and availability.
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Lang, Amy, Philip Motta, Maria Laura Habegger, Robert Hueter, and Farhana Afroz. "Shark Skin Separation Control Mechanisms." Marine Technology Society Journal 45, no. 4 (2011): 208–15. http://dx.doi.org/10.4031/mtsj.45.4.12.

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AbstractDrag reduction by marine organisms has undergone millions of years of natural selection, and from these organisms biomimetic studies can derive new technologies. The shortfin mako (Isurus oxyrinchus), considered to be one of the fastest and most agile marine predators, is known to have highly flexible scales on certain locations of its body. This scale flexibility is theorized to provide a passive, flow-actuated mechanism for controlling flow separation and thereby decreasing drag. Recent biological observations have found that the shortfin mako has highly flexible scales, bristling to angles in excess of 50°, particularly on the sides of the body downstream of the gills. High “contragility,” which is explicitly defined here as the ability to change or move in a new or opposing direction while already in a turn, would occur if form drag were minimized. This would thus indicate the potential control of flow separation on body regions aft of the point of maximum girth or in regions of adverse pressure gradient. Thus results are consistent with the hypothesis that scale bristling controls flow separation. This scale flexibility appears to be a result of a reduction in the relative size of the base of the scales as well as a reorganization of the base shape as evidenced by histological examination of the skin and scales. Probable mechanisms leading to separation control are discussed.
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Knight, K. "Simulated shark skin boosts swimming." Journal of Experimental Biology 217, no. 10 (2014): 1637–38. http://dx.doi.org/10.1242/jeb.107342.

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Naresh, M. D., V. Arumugam, and R. Sanjeevi. "Mechanical behaviour of shark skin." Journal of Biosciences 22, no. 4 (1997): 431–37. http://dx.doi.org/10.1007/bf02703189.

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Lang, Amy W. "The speedy secret of shark skin." Physics Today 73, no. 4 (2020): 58–59. http://dx.doi.org/10.1063/pt.3.4460.

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Ball, Philip. "Engineering Shark skin and other solutions." Nature 400, no. 6744 (1999): 507–9. http://dx.doi.org/10.1038/22883.

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Jo, Wonhee, Hong Suk Kang, Jaeho Choi, et al. "Light-Designed Shark Skin-Mimetic Surfaces." Nano Letters 21, no. 13 (2021): 5500–5507. http://dx.doi.org/10.1021/acs.nanolett.1c00436.

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Sagong, Woong, Chulkyu Kim, Sangho Choi, Woo-Pyung Jeon, and Haecheon Choi. "Does the sailfish skin reduce the skin friction like the shark skin?" Physics of Fluids 20, no. 10 (2008): 101510. http://dx.doi.org/10.1063/1.3005861.

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OYANAGI, YASUSHI. "Rubber Extrusion. Melt Fracture and Shark Skin." NIPPON GOMU KYOKAISHI 69, no. 5 (1996): 334–43. http://dx.doi.org/10.2324/gomu.69.334.

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Dissertations / Theses on the topic "Shark skin"

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Morris, Jackson Alexander. "Application of Shark Skin Flow Control Techniques to Airflow." Thesis, The University of Alabama, 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10638677.

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Due to millions of years of evolution, sharks have evolved to become quick and efficient ocean apex predators. Shark skin is made up of millions of microscopic scales, or denticles, that are approximately 0.2 mm in size. Scales located on the shark’s body where separation control is paramount (such as behind the gills or the trailing edge of the pectoral fin) are capable of bristling. These scales are hypothesized to act as a flow control mechanism capable of being passively actuated by reversed flow. It is believed that shark scales are strategically sized to interact with the lower 5% of a boundary layer, where reversed flow occurs at the onset of boundary layer separation. Previous research has shown shark skin to be capable of controlling separation in water. This thesis aims to investigate the same passive flow control techniques in air.

To investigate this phenomenon, several sets of microflaps were designed and manufactured with a 3D printer. The microflaps were designed in both 2D (rectangular) and 3D (mirroring shark scale geometry) variants. These microflaps were placed in a low-speed wind tunnel in the lower 5% of the boundary layer. Solid fences and a flat plate diffuser with suction were placed in the tunnel to create different separated flow regions. A hot film probe was used to measure velocity magnitude in the streamwise plane of the separated regions. The results showed that low-speed airflow is capable of bristling objects in the boundary layer. When placed in a region of reverse flow, the microflaps were passively actuated. Microflaps fluctuated between bristled and flat states in reverse flow regions located close to the reattachment zone.

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Dean, Brian D. "The Effect of Shark Skin Inspired Riblet Geometries on Drag in Rectangular Duct Flow." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1311874211.

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Büttner, Claudia Christine [Verfasser]. "Shark skin inspired surfaces for aerodynamically optimized high temperature applications : fabrication, oxidation, characterization / Claudia Christine Büttner." Aachen : Hochschulbibliothek der Rheinisch-Westfälischen Technischen Hochschule Aachen, 2011. http://d-nb.info/1014298024/34.

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Bixler, Greg. "Bioinspired Surface for Low Drag, Self-Cleaning, and Antifouling: Shark Skin, Butterfly and Rice Leaf Effects." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1385536745.

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Shaik, Khaleelulla Saheb [Verfasser], and Gerd [Akademischer Betreuer] Jürgens. "Role of Wol and Alas in Drosophila skin differentiation / Khaleelulla Saheb Shaik ; Betreuer: Gerd Jürgens." Tübingen : Universitätsbibliothek Tübingen, 2012. http://d-nb.info/1162842881/34.

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Angela and 連佳祺. "Patterned PDMS Mimicking Shark-skin Deterring Biofilm Formation of Staphylococcus aureus." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/65741994552925990286.

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碩士
國立清華大學
材料科學工程學系
100
Once the S. aureus biofilms disperse and flow into the blood, the clusters of S. aureus will cause serious disease, even death. Finding effective antifouling surface for catheters is an important issue to reduce possible problems that can be induced by bacterial infection. This study was conducted in two situations, with S. aureus cultivated solution in static mode and in flow mode. S. aureus was cultivated for 21 days to observe the biofilm development on patterned PDMS substrates with flat, aligned, and unaligned surfaces. The purpose of the study is to investigate the development of bacterial attachment and colonization on an engineered topography with a well-defined pattern. We are concerned with the design and characterization of surface microtopographies that effectively control bioadhesion. The results of this experiment showed that topographical surfaces have the ability to decrease S. aureus attachment and colonization. In flowing mode, unaligned patterned surfaces disrupted the colonization and formation of biofilm. The percentage of the area coverage for S. aureus on flat, aligned patterned, and unaligned patterned surfaces are 48.2 %, 20 %, and 10.3 %, respectively. In static mode, both aligned patterned and unaligned patterned surfaces decrease the colonization percentage. However, the effectiveness of unaligned patterned surfaces on the reducing of the S. aureus attachment is about the same as that for the aligned patterned surface.
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TING, YI-SHAO, and 丁逸少. "Bionic Shark-Skin Replica Structure with Zwitterionic Polymer Immobilized by Atmospheric Plasma Polymerization for Anti-Bacteria and Anti-Fouling Biomedical Materials." Thesis, 2019. http://ndltd.ncl.edu.tw/handle/g3m93p.

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碩士
明志科技大學
材料工程系碩士班
107
In this study, the multilayers of the bionic polydimethylsiloxane (PDMS)-polyvinyl alcohol (PVA)- (2-methacryloyloxyethyl phosphorylcholine, MPC) are fabricated by thermal curing methods for the wound dressing usage. The outer layers of the membranes are transferred the shark-skin structure and they act as antifouling-layer. The internal layers are comprised of PVA. The PDMS-PVA surfaces have zwitterionic polymer MPC grafted on them by atmospheric plasma-induced polymerization for enhancing wound repair. The PDMS-PVA-PMPC membranes were characterized by scanning electron microscopy (SEM)/ energy dispersive X-ray spectroscopy (EDS), fourier transform infrared spectroscopy (FTIR), contact angle (CA) measurement, and X-ray photoelectron spectroscopy (XPS). The biological tests performed on these membranes include platelet anti-adhesion test, bacterial adhesion test and biocompatibility test. The result successfully shows that the outside layer becomes more hydrophobic (CA from 90o to 110o) after shark-skin structure is transferred to it while the inside layer becomes very hydrophilic (CA from 90o to 20o) due to immobilization of PMPC on PDMS-PVA which can improve biocompatibility, reduce cell attachment, platelet adhesion, and study anti-sticking Adhesive dressings are used as a new generation of wound dressings.
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Books on the topic "Shark skin"

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Sharm el-Sheikh diving guide. Elias Modern Publishing House, 1999.

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Dorsey, Tim. Shark Skin Suite: A Novel (Serge Storms). William Morrow, 2015.

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Shark Skin Suite: A Novel (Serge Storms). HarperLuxe, 2015.

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(undifferentiated), David Martin, and Monica Sanhueza. Sharks: For Your Eyes Only. Hats Off Books, 2001.

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Byrne, Tom. Shark Skin Shoes: The First Bert Nichols Mystery. Trafford Publishing, 2006.

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A, Musick John, Langley Research Center, and United States. National Aeronautics and Space Administration. Scientific and Technical Information Branch., eds. Hydrodynamic aspects of shark scales. National Aeronautics and Space Administration, Scientific and Technical Information Branch, 1986.

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Costello, E. Ski Share, Vermont: Expert (Partiers) Only (Ski Share). Tandem Library, 2005.

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VT (Vermont) (Ski Share). Simon Pulse, 2005.

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Fifty places to ski & snowboard before you die: Downhill experts share the world's greatest destinations. 2013.

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Guthrie, Graeme. No skin in the game. Oxford University Press, 2017. http://dx.doi.org/10.1093/acprof:oso/9780190641184.003.0009.

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Boards can delegate some of the task of monitoring management to financial analysts, who reduce the asymmetry of information between a firm’s insiders and outside investors, which makes the various tools for reducing manager-shareholder conflict more effective. This chapter uses events at SPX, a mid-western manufacturing firm undergoing explosive growth, to explain the role that financial analysts play in monitoring management. It shows how career concerns can give financial analysts—who typically have little direct exposure to a firm’s share price—a strong incentive to monitor management. It also shows how analysts’ effectiveness as delegated monitors is limited by their own conflicts of interest and how the market’s response to analysts’ recommendations can have unwelcome effects on managers’ behavior.
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Book chapters on the topic "Shark skin"

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Zhu, Yimei, Hiromi Inada, Achim Hartschuh, et al. "Shark Skin Effect." In Encyclopedia of Nanotechnology. Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-90-481-9751-4_159.

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Bhushan, Bharat. "Shark Skin Effect." In Encyclopedia of Nanotechnology. Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-9780-1_159.

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Lang, Amy, Maria Laura Habegger, and Philip Motta. "Shark Skin Drag Reduction." In Encyclopedia of Nanotechnology. Springer Netherlands, 2015. http://dx.doi.org/10.1007/978-94-007-6178-0_266-2.

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Zhu, Yimei, Hiromi Inada, Achim Hartschuh, et al. "Shark Skin Drag Reduction." In Encyclopedia of Nanotechnology. Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-90-481-9751-4_266.

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Zhu, Yimei, Hiromi Inada, Achim Hartschuh, et al. "Shark Skin Separation Control." In Encyclopedia of Nanotechnology. Springer Netherlands, 2012. http://dx.doi.org/10.1007/978-90-481-9751-4_100753.

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Lang, Amy, Maria Laura Habegger, and Philip Motta. "Shark Skin Drag Reduction." In Encyclopedia of Nanotechnology. Springer Netherlands, 2016. http://dx.doi.org/10.1007/978-94-017-9780-1_266.

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Lang, Amy, Philip Motta, Maria Laura Habegger, and Robert Hueter. "Shark Skin Boundary Layer Control." In Natural Locomotion in Fluids and on Surfaces. Springer New York, 2012. http://dx.doi.org/10.1007/978-1-4614-3997-4_9.

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Zulkefli, Nur Faraihan, Mohamad Asmidzam Ahamat, Nurul Fatihah Mohd Safri, Nurhayati Mohd Nur, and Azmin Syakrine Mohd Rafie. "Aerodynamic Performance of Shark Skin Shape Vortex Generator." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-4756-0_10.

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Lee, Michelle. "Shark Skin: Taking a Bite Out of Bacteria." In Remarkable Natural Material Surfaces and Their Engineering Potential. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-03125-5_2.

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Hage, W., D. W. Bechert, and M. Bruse. "Artificial shark skin on its way to technical application." In Science and Art Symposium 2000. Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4177-2_20.

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Conference papers on the topic "Shark skin"

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BECHERT, D., and W. REIF. "On the Drag Reduction of the Shark Skin." In 23rd Aerospace Sciences Meeting. American Institute of Aeronautics and Astronautics, 1985. http://dx.doi.org/10.2514/6.1985-546.

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Mendelson, Leah, Amy Lang, Jennifer Wheelus, and J. Smith. "Turbulence Augmentation over a Bristled Shark Skin Model." In 40th Fluid Dynamics Conference and Exhibit. American Institute of Aeronautics and Astronautics, 2010. http://dx.doi.org/10.2514/6.2010-4268.

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Fossi, Maria Cristina, Letizia Marsili, Matteo Baini, et al. "First ecotoxicological investigation in whale sharks of the Gulf of California (Mexico) using skin biopsy." In The 4th International Whale Shark Conference. Hamad bin Khalifa University Press (HBKU Press), 2016. http://dx.doi.org/10.5339/qproc.2016.iwsc4.18.

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Lang, Amy, and Pablo Hidalgo. "Cavity Flow Characterization of the Bristled Shark Skin Microgeometry." In 47th AIAA Aerospace Sciences Meeting including The New Horizons Forum and Aerospace Exposition. American Institute of Aeronautics and Astronautics, 2009. http://dx.doi.org/10.2514/6.2009-1107.

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Wagner, M. H., T. Himmel, O. Kulikov, and K. Hornung. "Mechanisms of shark skin suppression by novel polymer processing aids." In PROCEEDINGS OF PPS-29: The 29th International Conference of the Polymer Processing Society - Conference Papers. American Institute of Physics, 2014. http://dx.doi.org/10.1063/1.4873742.

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Ibrahim, M. D., S. N. A. Amran, A. Zulkharnain, and Y. Sunami. "Streamlined vessels for speedboats: Macro modifications of shark skin design applications." In THE IRAGO CONFERENCE 2017: A 360-degree Outlook on Critical Scientific and Technological Challenges for a Sustainable Society. Author(s), 2018. http://dx.doi.org/10.1063/1.5021936.

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Sunder, Joachim, and Martin Zatloukal. "Fourier Transformation Analysis in Capillary Flow—A New Option to Detect Flow Instabilities (Shark Skin)." In NOVEL TRENDS IN RHEOLOGY III: Proceedings of the International Conference. AIP, 2009. http://dx.doi.org/10.1063/1.3203263.

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Göttfert, A., J. Sunder, Albert Co, Gary L. Leal, Ralph H. Colby, and A. Jeffrey Giacomin. "Fourier Transformation Analysis in Capillary Flow—A New Option to Detect Flow Instabilities (Shark Skin)." In THE XV INTERNATIONAL CONGRESS ON RHEOLOGY: The Society of Rheology 80th Annual Meeting. AIP, 2008. http://dx.doi.org/10.1063/1.2964514.

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Hidalgo, Pablo, and Amy Lang. "Experimental Investigation of the Flow of a D-Type Rough Surface Based on Shark Skin Denticles." In 46th AIAA Aerospace Sciences Meeting and Exhibit. American Institute of Aeronautics and Astronautics, 2008. http://dx.doi.org/10.2514/6.2008-507.

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Jin, Yan, and H. Herwig. "Effect of Shark Skin Textures on Entropy Generation for Turbulent Channel Flow and Heat Transfer Problems." In The 15th International Heat Transfer Conference. Begellhouse, 2014. http://dx.doi.org/10.1615/ihtc15.ttr.008699.

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