scholarly journals Additive Manufacturing of Optically Transparent Glass

2015 ◽  
Vol 2 (3) ◽  
pp. 92-105 ◽  
Author(s):  
John Klein ◽  
Michael Stern ◽  
Giorgia Franchin ◽  
Markus Kayser ◽  
Chikara Inamura ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Transparent Glass ◽  
Optically Transparent

Additive Manufacturing of Transparent Soda-Lime Glass Using a Filament-Fed Process

2017 ◽  
Vol 139 (6) ◽  
Author(s):  
Junjie Luo ◽  
Luke J. Gilbert ◽  
Chuang Qu ◽  
Robert G. Landers ◽  
Douglas A. Bristow ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Process Parameters ◽  
Bubble Formation ◽  
Soda Lime ◽  
Soda Lime Glass ◽  
Correct Process ◽  
Transparent Glass ◽  
Optically Transparent ◽  
Transparent Parts

There are many scientific and engineering applications of transparent glass including optics, communications, electronics, and hermetic seals. However, there has been minimal research toward the additive manufacturing (AM) of transparent glass parts. This paper describes and demonstrates a filament-fed technique for AM of transparent glass. A transparent glass filament is melted by a CO2 laser and solidifies as the workpiece is translated relative to the stationary laser beam. To prevent thermal shock, the workpiece rests on a heated build platform. In order to obtain optically transparent parts, several challenges must be overcome, notably producing index homogeneity and avoiding bubble formation. The effects of key process parameters on the morphology and transparency of the printed glass are explored experimentally. These results are compared to a low-order model relating the process parameters to the temperature of the molten region, which is critical to the quality of the deposited glass. At lower temperatures, the glass is not fully melted, resulting in index variations in the final part, while at higher temperatures, phase separation introduces bubbles and other defects into the part. The correct process avoids these issues and deposits optically transparent glass.

scholarly journals The molten glass sewing machine

2017 ◽  
Vol 375 (2093) ◽  
pp. 20160156 ◽  
Author(s):  
P.-T. Brun ◽  
Chikara Inamura ◽  
Daniel Lizardo ◽  
Giorgia Franchin ◽  
Michael Stern ◽  
...  
Keyword(s):  
Additive Manufacturing ◽  
Molten Glass ◽  
Building Blocks ◽  
Geometrical Model ◽  
Media Theory ◽  
Complex Media ◽  
Sewing Machine ◽  
Transparent Glass ◽  
Fluid Instability ◽  
Optically Transparent

We present a fluid-instability-based approach for digitally fabricating geometrically complex uniformly sized structures in molten glass. Formed by mathematically defined and physically characterized instability patterns, such structures are produced via the additive manufacturing of optically transparent glass, and result from the coiling of an extruded glass thread. We propose a minimal geometrical model—and a methodology—to reliably control the morphology of patterns, so that these building blocks can be assembled into larger structures with tailored functionally and optically tunable properties. This article is part of the themed issue ‘Patterning through instabilities in complex media: theory and applications’.

Effects of BST on Optical and Dielectric Properties of Na2O-B2O3-SiO2 Glasses

2016 ◽  
Vol 675-676 ◽  
pp. 335-338
Author(s):  
Pratthana Intawin ◽  
Pichitchai Butnoi ◽  
Wilaiwan Leenakul ◽  
Anocha Munpakdee ◽  
Tawee Tunkasiri ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Dielectric Properties ◽  
Transparent Glass ◽  
Optically Transparent ◽  
Constant E ◽  
Enhanced Conductivity ◽  
Quench Method

In this research, the effects of Ba0.7Sr0.3TiO3 (BST) on optical and dielectric properties of Na2O-B2O3-SiO2 glasses were investigated. From the study, the optically transparent glass from BST system was successfully prepared by using melt-quench method. The composition of BST used in this study are ranging between 20-60 wt.% BST. It was found that the addition of BST enhanced conductivity, but in turn reduced the percentage of transmittance in the glasses. The dielectric constant (ɛr) of the BST/Na2O-B2O3-SiO2 glasses improved with increasing the content of BST, which in turn plays an important role in controlling the properties of the BST/Na2O-B2O3-SiO2 glasses.

scholarly journals Additive Manufacturing of Transparent Glass Structures

2018 ◽  
Vol 5 (4) ◽  
pp. 269-283 ◽  
Author(s):  
Chikara Inamura ◽  
Michael Stern ◽  
Daniel Lizardo ◽  
Peter Houk ◽  
Neri Oxman
Keyword(s):  
Additive Manufacturing ◽  
Transparent Glass

Chemical Route to Aluminosilicate Gels, Glasses and Ceramics

1986 ◽  
Vol 73 ◽  
Author(s):  
J. C. Pouxviel ◽  
J. P. Boilot ◽  
A. Dauger ◽  
L. Huber
Keyword(s):  
Thermal Treatment ◽  
Glass Ceramics ◽  
Silica Matrix ◽  
Chemical Route ◽  
Transparent Glass ◽  
Aluminosilicate Glasses ◽  
Optically Transparent ◽  
Metal Organic ◽  
Organic Precursors ◽  
Homogeneous Crystallization

ABSTRACTChemically ultra-homogeneous gels have been prepared, in the SiO2-Al2O3 system, using new metal-organic precursors with Al-O-Si linkages. By thermal treatment at 900°C, transparent monolithic gels lead to aluminosilicate glasses and above 1000°C, to optically transparent glass-ceramics (for instance by homogeneous crystallization of mullite in an amorphous silica matrix).

scholarly journals Environmental dust removal from inclined hydrophobic glass surface: avalanche influence on dynamics of dust particles

RSC Advances ◽  
2018 ◽  
Vol 8 (59) ◽  
pp. 33775-33785 ◽  
Author(s):  
Bekir Sami Yilbas ◽  
Abdullah Al-Sharafi ◽  
Haider Ali ◽  
Nasser Al-Aqeeli ◽  
Hussain Al-Qahtani ◽  
...  
Keyword(s):  
Glass Surface ◽  
Dust Removal ◽  
Dust Particles ◽  
Transparent Glass ◽  
Optically Transparent ◽  
Glass Surfaces

The removal of environmental dust particles from optically transparent glass surfaces is considered, and the dynamics of the dust particles on the inclined hydrophobic glass surface is examined.

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