MS60045: Glass and Glass Materials

Biography

Shibayan Roy,

Associate Professor

At IIT Kgp since November 2015

Research areas:

• Mechanical properties of materials
• Meso- and micro-scale mechanical characterization
• Crystallographic texture of materials and EBSD
• Additive and Laser based manufacturing
• Glass and glass-ceramics

Homepage: https://sites.google.com/site/shibayansdreams/

e-mail: shibayan@matsc.iitkgp.ac.in,

Education:

• PhD in Materials Engineering, IISc-Bangalore
• M. Tech. in Materials and Metallurgical Engineering, IIT Kanpur  
• B. Tech. in Ceramic Technology, College of Ceramic Technology, Calcutta University

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Previous Employment:

• Post-doctoral Research Associate in Oak Ridge National Laboratory (ORNL), USA (November 2013 to October 2015).
• Post-doctoral Researcher at Chemnitz University of Technology, Germany (February 2012 – October 2013).
• Scientist B Gr. IV(1) in Surface Engineering Division (SED), National Aerospace Laboratories (NAL), Council of Scientific and Industrial Research-CSIR (June 2005 - July 2006).

Reference books

• 30% weightage on mid-sem,
• 50% weightage on end sem,
• 20% weightage on quizzes, assignments, class performance

About the Evaluation (Grades)

Grades will follow Gaussian distribution

Types of Glasses: Uses & Properties

https://study.com/academy/lesson/types-of-glasses-uses-properties.html

What's unique about glass?

• The ability of glasses to transmit light.
• Very few (rigid solid) materials exist in nature which are transparent to visible light.
• Metals are opaque, as are virtually all natural organic materials.
• Many liquids are transparent, but they are transient in nature, without the enduring qualities we desire in our possessions.
• A list of the few transparent natural solids includes diamonds, emeralds, rubies, and many other precious and semi-precious stones.
• It is difficult to think of a naturally transparent solid which is not highly valued for its transparency and brilliance.
• Our heritage as humans would seem to provide a bias toward placing a high value on such objects. We are still fascinated by “bright, shiny objects”.

Transparent natural solids: Gem stones

Why is glass transparent?

Fun facts

Indian temples and structures never had the use of glass windows and so as the Indian mosques and mausoleums

Temple of heaven from 15^th Century

Palace museum, Forbidden city, 15^th Century

Indians mastered metallurgy

Chinese learnt the art of ceramics

Stained glass windows of Nasīr al-Mulk Mosque in Shiraz, Iran

Notre Dam cathedral in Paris from 12^th Century AD

Left: 9th century, Iraq; Centre: 7th–early 8th century, Egypt or Syria; Right: 12th century, Syria

Medical flasks and bottles from Ottoman manuscript about Islamic market, medicine and pharmacy.

Soda (Na₂O)-Lime (CaO)-Silica (SiO₂) glass

Mediterranean sea meeting Arab and Sahara desert

The glorious “Phoenicians” from regions of eastern Mediterranean

History of glass

• Presence of glasses in our everyday environment is so common that we rarely notice their existence.
• Our current casual attitude toward the family of materials known as glasses has not always existed.

Lybian desert glass: Tektite – created from the impact of lightning or a meteotite.

Obsidian: A naturally occurring volcanic glass as an igneous rock

Roman blue bottle from 1st Century AD

Galileo's objective lens from Florence, Italy in 1610.

Stained glass windows in Saint-Denis Cathedral, Paris, France

Industrial revolution in Europe and USA (18^th Century AD)

Digital/Informatics revolution worldwide (20^th Century AD onward)

Glass in modern times: Life in the Glass Age

Future: A Day Made of Glass by Corning Inc. (2011)

Future: A Day Made of Glass by Corning Inc. (2012)

Glass for building and structures: Bbuildings in India 2017�

Structural glasses: Glass structures