Editing Smart glass (section)

{{Short description|Glass with electrically switchable opacity}}
{{about|windows with variable opacity|wearable computing|Smartglasses|the Xbox control application|Xbox SmartGlass}}
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'''Smart glass,''' also known as '''switchable glass''', '''dynamic glass''', and '''smart-tinting glass''', is a type of [[glass]] that can change its optical properties, becoming opaque or tinted, in response to electrical or thermal signals. This can be used to prevent sunlight and heat from entering a building during hot days, improving energy efficiency.<ref name="Wang">{{cite journal |last1=Chase-Lubitz |first1=Jesse |date=Nov 28, 2022 |title=Once a Luxury Amenity, Smart Glass Emerges as an Energy Saver |url=https://www.bloomberg.com/news/articles/2022-11-28/what-is-smart-glass |journal=Bloomberg |language= |volume= |issue= |pages= |doi= |issn= |access-date=1 Feb 2023}}</ref> It can also be used to conveniently provide privacy or visibility to a room.

There are two primary classifications of smart glass: active or passive. The most common active glass technologies used today are [[Electrochromic device|electrochromic]], [[Liquid-crystal display|liquid crystal]], and suspended particle devices (SPD). [[Thermochromism|Thermochromic]] and [[Photochromism|photochromic]] are classified as passive technologies.<ref>{{Cite web |date=20 Aug 2014 |title=Everything You Ever Needed to Know (and More!) About Smart Glass |url=https://blog.technavio.org/blog/everything-you-ever-needed-to-know-and-more-about-smart-glass |access-date=1 Feb 2023 |website=Technavio}}</ref>

When installed in the envelope of buildings, smart glass helps to create [[climate adaptive building shells]],<ref name="Drück">{{cite book |last1=Drück |first1=Harald |last2=Pillai |first2=Radhakrishna G. |last3=Tharian |first3=Manoj G. |last4=Majeed |first4=Aysha Zeneeb |title=Green Buildings and Sustainable Engineering: Proceedings of GBSE 2018 |date=14 July 2018 |publisher=Springer |isbn=978-981-13-1202-1 |url=https://books.google.com/books?id=Vw9kDwAAQBAJ&pg=PA146 |access-date=15 July 2022 |language=en}}</ref> which benefits include things such as natural light adjustment, visual comfort, [[Ultraviolet|UV]] and [[infrared]] blocking, reduced energy use, thermal comfort, resistance to extreme weather conditions, and privacy.<ref name="Miller"/>  Some smart windows can self-adapt to heat or [[passive cooling|cool]] for [[Energy conservation#Buildings|energy conservation in buildings]].<ref name="Egan">{{cite news |last1=Egan |first1=Matt |title=This smart window company is on a $1 trillion mission to eliminate blinds and shades {{!}} CNN Business |url=https://www.cnn.com/2021/03/09/investing/view-spac-smart-window/index.html |access-date=15 July 2022 |work=CNN |date=9 March 2021 |language=en}}</ref><ref>{{cite news |title=Scientists invent energy-saving glass that 'self-adapts' to heating and cooling demand |url=https://techxplore.com/news/2021-12-scientists-energy-saving-glass-self-adapts-cooling.html  |date= December 16, 2021  |access-date=19 January 2022 |work=Nanyang Technological University |language=en}}</ref><ref>{{cite journal |last1=Wang |first1=Shancheng |last2=Jiang |first2=Tengyao |last3=Meng |first3=Yun |last4=Yang |first4=Ronggui |last5=Tan |first5=Gang |last6=Long |first6=Yi |title=Scalable thermochromic smart windows with passive radiative cooling regulation |journal=Science |date=17 December 2021 |volume=374 |issue=6574 |pages=1501–1504 |doi=10.1126/science.abg0291 |pmid=34914526 |bibcode=2021Sci...374.1501W |s2cid=245262692 |language=EN}}</ref>
Smart windows can eliminate the need for blinds, shades or window treatments.<ref name="Elgan">{{cite web |last1=Elgan |first1=Mike  |date= September 24, 2013 |title=Is It Curtains for Curtains? Smart Glass Eliminates Window Coverings |url=https://www.houzz.com/magazine/is-it-curtains-for-curtains-smart-glass-eliminates-window-coverings-stsetivw-vs~17678979 |website=Houzz |access-date=15 July 2022}}</ref>

Some effects can be obtained by laminating '''smart film''' or '''switchable film''' onto flat surfaces using glass, acrylic or polycarbonate laminates.<ref>{{cite news |title=Smart windows that protect against solar radiation can help reduce greenhouse gases |url=https://techxplore.com/news/2021-09-smart-windows-solar-greenhouse-gases.html |access-date=15 July 2022 |work=techxplore.com |date=September 1, 2021 |language=en}}</ref> Some types of smart films can be applied to existing glass windows using either a self-adhesive smart film or special glue.<ref name="film">{{cite news |title=Laminated Smart Glass |url=https://www.gauzy.com/laminated-smart-glass-vs-adhesive-smart-film-which-is-best-for-your-project/ |access-date=15 July 2022 |work=Gauzy |date=18 November 2021}}</ref>
Spray-on methods for applying clear coatings to block heat and conduct electricity are also under development.<ref>{{cite news |title=Spray-On Clear Coatings Developed for Cheaper Smart Windows |url=https://www.labmanager.com/news/spray-on-clear-coatings-developed-for-cheaper-smart-windows-23470 |access-date=15 July 2022 |work=Lab Manager |date=August 5, 2020 |language=en}}</ref>