Glaschemie available for download and read online in other formats. Contents fundamentals of inorganic nonmetallic glasses and glass processing silicate glasses. Fast microstructuring of silica glasses surface by nir laser. From the results shown in table 3 it is evident that the microstructuring of different types of glasses occurred under the influence of different laser power. Conference proceedings papers presentations journals.
A class of amorphous materials thermodynamic phenomena in glass melting and forming glass half products for microstructuring geometrical microstructuring of glasses and applications introduction to geometrical microstructuring mechanical structuring processes chemical and complex structuring processes. Request pdf microstructuring of glasses as microstructured glass becomes increasingly important for microsystems technology, the main application fields. Wahlen sie eine andere sprache aus, um inhalte fur ihren standort zu sehen. Commercial e glasses in the ternary sio 2al o 3cao system contain a small amount 0. Ir femtosecond laser microstructuring of photochromic glasses.
The present invention is directed to the creation of optical waveguiding devices from standard optical fibers by the creation of zones of permanently altered refractive index characteristics therein. To control the 3d microstructuring process of photosensitive glasses, it is important to determine the effect of the laser parameters laser fluence, speed on the crystallized area. Unnoticed by the world, the age of glass microstructuring had started, possibly 30 years too early. Lasers are used to polish, cut, etch, inscribe, decorate and engrave glasses, and also to find applications in microstructuring of glasses. The technique combines the instability of liquids, following dewetting phenomena, with geometrical confinement, induced by a template mesh, to deposit optically active molecules in an ordered fashion. Preface ii manufacture of glass chapter 5 presents the bat conclusions as defined in article 312 of the directive. Glass is an amorphous material with a unique property pro. The amorphous character of glasses implies that all its properties are isotropic and that the ability of microstructuring is therefore. An ordered and controlled microarray of isolated organic electroluminescent pixels see figure is fabricated by a surface.
Co 2 and excimer lasers are the prefered lasers used for glass processing. Figure 4 and 5 present the depth and the width of lines written by a femtosecond laser at different fluences and writing speeds. The microstructure of sodalime silicate glasses detected by. Pdf glass is widely used as a structural and functional material in micrototalanalysissystems. The material is machinable because of the precipitation of micas of. Like photochromic coatings, they are intended to attain lighting energy savings. They are characterized by slow crystallization kinetics, which make it possible to produce them from the melt in thicknesses of several mm. Frequency every year remarque next time in spring 2021 summary the course will provide fundamental key aspects governing glass as a material and the microstructuring of glass using a variety of techniques, like dry and wet etching, mechanical and laser machining, as well as sol gel technology. The interaction of the near ir femtosecond laser pulses with photochromic glass sample is investigated. Chalcogenide glasses for infrared photonics adam 2015. A brief discussion on important ion conducting oxide glasses are given hereunder.
Silicate glasses are an exception elastic constants for glasses and glass ceramics code type e gpa g gpa 9606 glass ceramic 17. Laser irradiation was focused inside the samples by a high numerical aperture microscope objective lenses with na 0. Femtosecond laser threedimensional microstructuring inside. Significant investment in training, technology, equipment, business. Microstructure definition of microstructure by merriamwebster. Two different types of microstructures due to the optical properties modification of the sample are observed at the irradiated regions with single. Only with the rise of silicon technology did microstructuring of glasses become important. Definition, structure, composition, properties and kinds of glasses. Pdf ir femtosecond laser microstructuring of photochromic. Microstructure properties of lead silicate glasses. Threedimensional printing of transparent fused silica glass. As microstructured glass becomes increasingly important for microsystems.
The new edition contains current information on glass glass ceramic forming in general and explores specific systems, crystallization mechanisms and products such as. The study indicated that the fabricating microstructure of glass microfluidic chip could be finished in 12 min with good surface quality, thus. Fabricating microstructures on glass for microfluidic chips by. Alexander bismarck as microstructured glass becomes increasingly important for microsystems technology, the main application fields include microfluidic systems, microanalysis systems, sensors, microactuators and. Microstructuring of optical fibers results in enhanced nonlinear properties leading to the demonstration of low.
As microstructured glass becomes increasingly important for microsystems technology, the. This molding technique, which is reminiscent of polymer injection molding, is expected to allow the fabrication of components such as elastic elements with outstanding mechanical. Microstructuring of glasses dagmar hulsenberg springer. Yag lasers are used only for special cases, because of the low absorption of the emitted wavelength by common trade glasses 76. Types, performance and legislation 39 upon switching off the power, they retain the same degree of dimming. Seifert1,4 a 1 fraunhofer center for silicon photovoltaics csp, walterh. Glass is a fused mixture of the silicates of alkalies, alkaline earths, and of more common metals. Photosensitive glasses, which were developed at corning glass works in 1947 1, have very interesting properties for of the fabrication of microsystems, such as a high youngs modulus, a low absorption coefficient in the. Hence conductivity of ion conducting glasses is a function of both composition of glass and temperature. Geometrical microstructuring of glasses and applications. Improved laser damage threshold for chalcogenide glasses. Also treated in detail are methods for influencing the geometrical microstructure of glasses by mechanical, chemical, thermal, optical, and electrical treatment, and the methods and equipment required to produce actual microdevices.
In the context of the book the application of lasers for microstructuring of glasses is of most interest and, therefore, the other processes will only be briefly discussed. Apr 20, 2017 using stereolithography 3d printers, a silica nanocomposite is shaped and then fused to produce nonporous, very smooth, highly transparent fused silica glass components. Pdf deep microstructuring in glass for microfluidic applications. Microstructuring of silica and polymethylmethacrylate glasses. The properties of glasses depend stronglyonthe chemical compositionofthe glassitself, which can varywidely. Mica glassceramics have previously been developed in si02b20ra120rmgof base glasses. Pdf melting and forming glass half products for microstructuring. Us8107782b2 microstructuring optical wave guide devices. Optimisation of composition and sintering temperature can lead to different microstructures, and even different crystalline phases, compared to those from the. James group is the most comprehensive and technologically advanced processor of glass in the asia pacific region. Presentation on glass manufacturing linkedin slideshare.
The main advantages of glass derive from its amorphous nature, the precondition for its theoretically directionindependent geometric structurability. Microstructuring of glasses deals with the amorphous state, various glass compositions and their properties, the interactions between glasses and the electromagnetic waves used to modify it. Request pdf fast microstructuring of silica glasses surface by nir laser radiation the glass surface microstructuring technology using laser radiation with nir wavelength. Mica glassceramics have previously been developed in si02b20ra120rmgofbase glasses. Chapter 6 presents information on emerging techniques as defined in article 314 of the. Microstructure definition is the microscopic structure of a material such as a mineral or a biological cell. Advanced photonics journal of applied remote sensing. On the other hand, commercially available boronfree eglass is derived from the quaternary sio 2al 2 o 3caomgo phase diagram. Usually the alkaline bases are sodium and potassium. Results of molding of a pdbased bulk metallic glass are presented, using microfabricated silicon as a mold. In this way it is possible to control the shading of the facade, and thus illumination and temperature of the interior fig. Mar 01, 2011 we demonstrate improved laser damage threshold of chalcogenide glasses with microstructured surfaces as compared to chalcogenide glasses provided with traditional antireflection coatings.
Microstructuring of optical and electrically conductive coatings. Experimental details the microstructuring experiments were carried out using. The surface microstructuring is used to reduce fresnel losses over large bandwidths in as 2 s 3 glasses and fibers. Microstructuring of glasses request pdf researchgate. Bulk metallic glasses bmgs are a novel class of material that holds high promise for applications as microparts such as springs.
Jun 19, 2015 presentation on glass manufacturing 1. Microstructuring glasses using lasers springerlink. Precise microstructuring of indiumtin oxide thin films on. For fused silica average power p av 8 w and scan speed. Also treated in detail are methods for influencing the geometrical microstructure of glasses by mechanical, chemical, thermal, optical, and electrical. Depending on the type of mobile ions in the host glass matrix, ion conducting glasses can be grouped under various names. Technical seminar on nasir glass industries limited joinabazar, sreepur, gazipur, bangladesh.
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