Coatings for electronic industry / Rohit Raj in PAINTINDIA, Vol. LIII, N° 4 (04/2003)

[article]  inPAINTINDIA > Vol. LIII, N° 4 (04/2003) . - p. 37-48 Titre : Coatings for electronic industry Type de document : texte imprimé Auteurs : Rohit Raj, Auteur Année de publication : 2003 Article en page(s) : p. 37-48 Note générale : Bibliogr. Langues : Anglais (eng) Index. décimale : 667.9 Revêtements et enduits Résumé : Integrated circuits, printed circuit boards, integrated optics are the 'soul' of today's electronic industry. These highly sophisticated elements solve our innumerable problems in the field of information and communication, data storage, construction, medical services etc. But these microcomponents face severe adverse conditions like vibrations, high temperature, salt spray, humidity, chemicals and moisture. These conditions can cause corrosion, mold growth, current leakage resulting in failure of the equipment. In these adverse situations organic coatings play a major role in protecting these equipments. These coatings act as electrical insulator, electromagnetic shield and provide mechanical protection. They allow higher power, closer track spacing to prevent current leakage. Many coatings are used for decorative purposes also - for example on the exterior of consumer and professional equipments. Both transparent and pigmented coatings improve appearance of equipments but the latter ensures higher degree of secrecy by camouflaging the components and layout. Note de contenu : - APPLICATION - Selection criteria for a coating - TYPES OF COATINGS - TYPICAL EXAMPLES - IPTICAL FIBRE COATING - COATING REQUIREMENT - COATING PROCESS - OPTICAL FIBER COATING MATERIAL - OPTICAL INFORMATION STORAGE - WRITE ONCE DIGITAL OPTICAL RECORDING - ERASABLE DIGITAL OPTICAL RECORDING Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=12065 [article]

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Coatings for medical application / Rohit Raj in PAINTINDIA, Vol. LVIII, N° 4 (04/2008)

[article]  inPAINTINDIA > Vol. LVIII, N° 4 (04/2008) . - p. 75-100 Titre : Coatings for medical application Type de document : texte imprimé Auteurs : Rohit Raj, Auteur Année de publication : 2008 Article en page(s) : p. 75-100 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Antimicrobiens Biomatériaux Médecine -- Appareils et matériel Revêtements -- Emploi en thérapeutique Index. décimale : 667.9 Revêtements et enduits Résumé : Over the years, the use of coatings for medical devices and drug delivery has gone though a paradigm shift from being a rarity to being an absolute necessity. The latest generations of coatings have become indispensable in augmenting the capabilities of medical devices and implants. Without these coatings, many medical devices would never reach their true potential in the intended application. They impart a wide variety of properties such as lubricity, biocompatibility, and antimicrobial action to device surfaces. In addition to the above mentioned properties, coatings for medical devices are also being used extensively to carry out specific local drug release and make medical implants more visible to imaging systems. With the introduction ofdrug-eluting stents (DES), treatment of coronary artery disease has gone through a radical change, which resulted in improved success rates of a minimally-invasive surgery-an alternative to open heart surgery known as percutaneous transluminal coronary angioplasty (PTCA). DES, are basically mesh tubes coated with a slow release drug that helps to prevent coronary renarrowing of coronary artery after coronary angioplasty. As medicine moves further along the spectrum from invasive to non-invasive, device manufacturers increasingly demand slippery or lubricious coatings. Non-invasive procedures require slippery maneuverable catheters that physicians can move easily through small blood vessels or delicate tissue. With lubricious coatings on an increasing number of medical devices, surgeons can perform procedures that were impossible a decade ago. Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=8900 [article]

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Sol gel coatings / Rohit Raj in PAINTINDIA, Vol. LVI, N° 1 (01/2006)

[article]  inPAINTINDIA > Vol. LVI, N° 1 (01/2006) . - p. 63-78 Titre : Sol gel coatings Type de document : texte imprimé Auteurs : Rohit Raj, Auteur Année de publication : 2006 Article en page(s) : p. 63-78 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Couches minces Revêtements Sol-gel, Procédé Solénoïde Index. décimale : 667.9 Revêtements et enduits Résumé : A new class of materials is fast emerging world wide with a promise to bring novel properties to reality. These materials are not necessarily new in their make up but they are modified to provide new material property and device characteristics in unprecedented ways. More recent advances have led to "hierarchical" structure of materials where each strata imparts a certain specific function. This is the class of "Sol Gel Coatings" Coatings for rearview mirrors and anti-reflective and architectural applications have been in commercial production since the 1960's. But today, sol gel thin film coatings are extensively used for such diverse applications as protective and optical coatings, passivation and planarization layers, sensors, high or low dielectric constant films, inorganic membranes, electro-optic and non linear optical film, electrochromics, semiconducting antistatic coatings, super conducting films, strengthening layers and ferroelectrics. Note de contenu : - Types of Sol gels - Coating process and coating equipments - Typical examples of uses of Sol gel coatings - Photonic solutions and sol gel - Elastomeric reinforcement strategies - Topochemistry of wood–inorganic composites Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=11540 [article]

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