question: How oleophobic coating prevent my oily fingers from smudging my screen?
comment: Oleophobic coatings repel oil, so the oil on you fingers sticks to your fingers instead of the screen.
passages: A lipophobic coating is used on the touchscreens of Apple's iPhones since the 3GS, their iPads, Nokia's N9 and Lumia devices, the HTC HD2, Hero, and Flyer and many other phones to repel fingerprint oil, which aids in preventing and cleaning fingerprint marks. Most "oleophobic" coatings used on mobile devices are fluoropolymer-based solids (similar to Teflon, which was used on the HTC Hero) and are both lipophobic and hydrophobic. In addition to being lipophobic or oleophobic, perfluoropolyether coatings impart exceptional lubricity to touch screens and give them a "slick feel" that eases their use. Use of isopropyl alcohol to clean the screen can damage or remove the coating.
   Liposomes are easy koded by simply adding FSL Kode constructs into the preparation. Contacting koded liposomes with microplates or other surfaces can cause the labeling of the microplate surface.
  
  Section::::Mechanisms of interaction.:Non-biologic surface interaction.
   In 2013, a new panel coating technology, geared to offer both screen and back panel protection, was discovered. The technology enabled protective cases to withstand a scratching force of up to 750 grams. Besides, the protective cases would only take three minutes to self-heal from the scratching force.
  
  In 2014, spray coating technology was discovered and later improved through research to form a transparent coat that prevented scratches. This technology brought the invention of the instant self-repair case.
   Glass taper joints can be sealed hermetically with PTFE sealing rings (high vacuum tight, air leakage rate 10 mBar*L/sec and below), o-rings (optionally encapsulated o-rings), or PTFE sleeves, sometimes used instead of grease that can dissolve into contamination. PTFE tape, PTFE resin string, and wax are other alternatives that are finding widespread use, but require a little care when winding onto the joint to ensure a good seal is produced.
  
  Section::::Glassware sealing.:Grease.
   This coating is a highly repeatable process. If the printed circuit board (PCB) is designed correctly, it can be the highest volume technique. The coating penetrates everywhere, including beneath devices, hence masking must be perfect to prevent leakage. Therefore, many PCBs are unsuitable for dipping due to design.
   Section::::Uses.
  
  Phosphate coatings are often used to provide corrosion resistance, however, phosphate coatings on their own do not provide this because the coating is porous. Therefore, oil or other sealers are used to achieve corrosion resistance. Zinc and manganese coatings are used to help break in components subject to wear and help prevent galling.
   Wettability is improved significantly by the sodium etching process. The resultant surface has an increased surface energy, reported in one study as increasing from 16.4 mN/m to 62.2 mN/m. Contact angle is reduced from approximately 115 degrees to approximately 60 degrees.
  
  Section::::Sodium etching.:Bond strengths.
   When preparing a surface for adhesive bonding, all oil and grease contamination must be removed in order to form a strong bond. Although the surface may appear to be clean, it is important to still use the degreasing process. Prior to performing the degreasing process, the compatibility of the solvent used and the adherend must be considered to prevent irreversible damage of the surface or part.
  
  Section::::Surface preparation of plastics.:Degreasing.:Vapor degreasing.
   "Oleophobic" (from the Latin "oleum" "oil", Greek ελαιοφοβικό "eleophobico" from έλαιο "eleo" "oil" and φόβος "phobos" "fear") refers to the physical property of a molecule that is seemingly repelled from oil. (Strictly speaking, there is no repulsive force involved; it is an absence of attraction.)
  
  The most common lipophobic substance is water.
  
  Fluorocarbons are also lipophobic/oleophobic in addition to being hydrophobic.
  
  Section::::Uses.
   Section::::Overview of common passivation methods.:Coatings.
   Visual representation of applied pressure has been one area of interest in development of tactile sensors. The Bao Group at Stanford University have designed an electrochromically active electronic skin that changes color with different amounts of applied pressure. Applied pressure can also be visualized by incorporation of active-matrix organic light-emitting diode displays which emit light when pressure is applied.
  
  Section::::Sensing ability of electronic skin.:Other sensing applications.
   Manganese and iron phosphating coatings are usually the thickest electrochemical conversion coatings, being thicker than electrochemical conversion coatings such as zinc phosphating and bluing.
  
  As for other chemical conversion coatings, the Parkerized surface must be completely covered with a light coating of oil to maximize corrosion and wear resistance, primarily through reducing wetting action and galvanic action. A heavy oil coating is unnecessary and undesirable for achieving a positive grip on Parkerized metal parts.
  
  Alternatively, the Parkerized surface may be painted over with an epoxy or molybdenum finish for added wear resistance and self-lubricating properties.
  
  Section::::Early history.
   Where r is the Wenzel roughness ratio, n is the number of distinct surface features in the design of the surface, and φ is the area fraction of the tops of the distinct surface features. A completely smooth surface would have an ERI = 0.
   where formula_2 is the interfacial tension between the solid and the liquid, formula_3 is the interfacial tension between the liquid and the vapor, and formula_4 is the interfacial tension between the solid and the vapor.
  
  An ideal oleophilic surface would have a contact angle of 0° with oil, therefore allowing the ink to transfer to the paper and be absorbed. The hydrocarbon plasma coating provides an oleophilic surface to the paper by lowering the contact angle of the paper with the oil in the ink. 
   On the surface layer, there is a special coating made from titanium oxide (TiO2). When activated by the sunlight, the titanium oxide can catalyze the decomposition of nitrous oxides into oxygen, water, sulphur, nitrates and other non-toxic solid compounds which can be washed away by water.
  
  Section::::Development.
   LOCA is generally used in displays and touch panel applications. Application is expected to increase as mobile devices, televisions, tablets, monitors and laptops migrate to touch interfaces. Although there are many varied applications, Henkel divides the applications into three categories:
  
  Touch panel sensor assembly: To bond touch panel sensors that require two layers of ITO (indium-tin-oxide) coated glass. This type of bonding will eventually be replaced by direct bonding.
  
  Cover lens bonding: To fill the air gap in touch panel sensors that use a cover lens (such as clear plastic PMMA) and the glass touch panel sensor.
   One of the more common methods of antifouling comes from growing polymer chains from a surface, often by poly(ethylene glycol) or PEG. However, challenges exist in creating a functionalized surface to which PEG chains may be grown, especially in aqueous environments. Researchers have been able to study the methods by which the common blue mussel "Mytilus edulis"' is able to adhere to solid surfaces in marine environments using mussel adhesive proteins, or MAPs. MAPs typically comprise several proteins, of which the most common repeating sequence is Ala-Lys-Pro-Ser-Tyr-trans-2,3-cis-3,4-dihydroxyproline (DHP) -Hyp-Thr-3,4-dihydroxyphenylalanine (DOPA) -Lys. The inclusion of the hydroxylated DHP and DOPA amino acids is thought to contribute to the adhesive nature of the MAPs. Recent studies have looked into using a short chain of DOPA residues as an adhesive end-group for antifouling PEG polymers, which show promise in adsorbing onto certain metal surfaces. Increasing the number of DOPA residues to three greatly improves the total amount of adsorbed DOPA-PEG polymers and exhibits antifouling properties exceeding most other 'grafting-to' polymeric functionalization methods.
   Section::::Influence of surface passivation on biocompatibility.
   Boiled linseed oil is used as sizing in traditional oil gilding to adhere sheets of gold leaf to a substrate (parchment, canvas, Armenian bole, etc.) It has a much longer working time than water-based size and gives a firm smooth surface which is adhesive enough in the first 12–24 hours after application to cause the gold to attach firmly to the intended surface.
  
  Section::::Uses.:Linoleum.
   One approach to OGS is called "sensor-on-lens” (also known as “touch-on-lens” or “sensor-on-glass”), with the "lens" in this case referring to the cover glass layer. Next, a layer of indium tin oxide (ITO) is deposited onto the back of the cover glass in a pattern to create electrodes to sense touch. A thin insulator layer is applied before a second ITO layer is deposited in a pattern creating electrodes running at right angles to the first layer. The assembly is then laminated onto a standard LCD panel.
   The other effect that the seasoning oil has is to make the surface of a cast iron pan hydrophobic. This makes the pan non-stick during cooking, since the food will combine with the oil and not the pan. It also makes the pan easier to clean, but eventually the polymerized oil layer which seasons it comes off and it needs to be re-seasoned.
  
  Section::::Materials in cooking.:Ceramic.
   COC and COP are generally attacked by non-polar solvents, such as toluene. COC shows good chemical resistance and barrier to other solvents, such as alcohols, and is very resistant to attack from acids and bases.
  
  Electronic properties of COC are in some respects similar to fluoropolymers, most notably a similarly low dissipation factor or tan delta, and low permittivity. It is a very good insulator.
  
  Section::::Applications.
  
  Section::::Applications.:Packaging.
   Colored impurities from the oil can be removed by adding activated charcoal to about one third to one half the weight or volume of the solvent containing the dissolved oil, mixing well, filtering, and evaporating the solvent. When decolorizing fatty oils, oil retention can be up to 50 wt % on bleaching earths and nearly 100 wt % on activated charcoal.
  
  Section::::Legality.
   The group's work has been published in Nature, Science and Advanced Materials journals, as well as "Proceedings of the (United States) National Academy of Sciences". They have demonstrated pressure and temperature measurements at a resolution of a few millimeters, as well as organic transistors, organic solar cells, and organic light emitting diodes about 1 μm thick.
   Section::::Coating methods.
  
  The coating material can be applied by various methods, including brushing, spraying, dipping or selectively coating by robots. Different methods of curing and drying are available depending on the conformal coating material. Nearly all modern conformal coatings contain a fluorescent dye to aid in coating coverage inspection.
  
  Section::::Coating methods.:Brush coating.
  