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{{short description|British physicist}}
{{EngvarB|date=July 2017}}
{{Use dmy dates|date=July 2017}}
{{Infobox scientist
| name = Cyril Hilsum
| honorific_suffix = {{postnom|country=GBR|CBE|FRS|HonFInstP|FREng|size=100%}}
| image = Conference on RACIP2 Group Photo.jpg
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| caption = Hilsum at the Second International Conference on Research and Communications in Physics
| birth_date = {{birth date and age|df=yes|1925|5|17}}
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| citizenship =
| nationality =
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| fields =
| workplaces =
| alma_mater = [[University College London]]
| doctoral_advisor =
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| notable_students =
| known_for = liquid-crystal science and technology
| author_abbrev_bot =
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| influences =
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| signature = <!-- (filename only) -->
| footnotes =
| children = [[Lindsey Hilsum]] and [[Karen Burt]]
}}
'''Cyril Hilsum'''
Hilsum was elected a member of the [[National Academy of Engineering]] in 1983 for the inventiveness and leadership in introducing [[Boron group|III]]-[[Pnictogen|V]] [[semiconductor]]s into electronic technology.
==Life==
In 1983, he was appointed chief scientist at [[Hirst Research Centre|GEC Hirst Research Centre]]. He was awarded the [[Max Born Prize]] in 1987, the 1988 [[Faraday Medal]], and from then until 1990 served as president of the [[Institute of Physics]]. In the 1990 [[Queen's Birthday Honours]], he was appointed a [[Commander of the Order of the British Empire]] (CBE)<ref>{{London Gazette|issue=52173|pages=7–8|date=15 June 1990}}</ref> for "services to the Electrical and Electronics Industry".<ref>{{cite web|url=https://www.npg.org.uk/collections/search/person/mp06516/cyril-hilsum|title=Cyril Hilsum (1925–) Physicist|access-date=30 January 2024|website=[[National Portrait Gallery (London)|National Portrait Gallery]]}}</ref> He was the subject of a photograph by [[Nick Sinclair]] in 1993 that is currently held by the [[National Portrait Gallery (London)|National Portrait Gallery]].<ref>{{cite web|url=https://www.npg.org.uk/collections/search/portrait/mw09509/Cyril-Hilsum|title=NPG P564(10) Cyril Hilsum|access-date=28 March 2019|website=[[National Portrait Gallery (London)|National Portrait Gallery]]}}</ref> In 1998, he was awarded the [[Richard Glazebrook Medal and Prize]] from the Institute of Physics, and is notable as the only scientist to hold both this and the Faraday Medal together.<ref>{{cite web|url=http://malvernscienceservices.com/index.php?option=com_content&view=article&id=91:professor-cyril-hilsum-cbe&catid=48:our-team&Itemid=89 |title=Professor Cyril Hilsum CBE |access-date=13 November 2008|website=Malvern Science Services}}{{dead link|date=December 2016 |bot=InternetArchiveBot |fix-attempted=yes }}</ref>
He currently serves as Chairman of the Scientific Board for Peratech and is a Visiting Professor of Physics at UCL, as well as sitting on the Defence Scientific Advisory Council.<ref>{{cite web|url=http://www.peratech.com/board.php |title=Peratech Board Members |accessdate=13 November 2008 |deadurl=yes |archiveurl=https://web.archive.org/web/20090107041336/http://www.peratech.com/board.php |archivedate=7 January 2009 |df= }}</ref> He also endorses the Karen Burt Memorial Award, named after his daughter, which is awarded yearly by the Women's Engineering Society 'to a woman engineer of high calibre who has newly attained full corporate membership and Chartered Engineer status through her relevant professional Institution and who has contributed to the promotion of the engineering profession'.<ref>{{cite web|url=http://www.wes.org.uk/?q=content/jane-wild-was-presented-karen-burt-memorial-award-wes-president-pam-wain|title=Jane Wild was presented with the Karen Burt Memorial Award by WES president Pam Wain|accessdate=13 November 2008}} {{Dead link|date=October 2010|bot=H3llBot}}</ref> In 2006 he was made a Fellow of the ESSCIRC,<ref>{{cite web|url=http://www.esscirc.org/en/page/fellows.aspx|title=ESSCIRC – Fellows|accessdate=13 November 2008}}</ref> and in 2007 wrote an obituary for [[Gareth Roberts (physicist)|Gareth Roberts]] for [[The Guardian]]<ref>{{cite news|url=https://www.theguardian.com/science/2007/mar/17/obituaries.guardianobituaries|title=Obituary: Sir Gareth Roberts|accessdate=13 November 2008 | work=The Guardian | location=London | date=17 March 2007 | first=Cyril | last=Hilsum}}</ref> and the Royal Society.<ref>{{Cite journal | last1 = Hilsum | first1 = C. | authorlink = Cyril Hilsum| doi = 10.1098/rsbm.2011.0016 | title = Sir [[Gareth Roberts (physicist)|Gareth Gwyn Roberts]]. 16 May 1940 -- 6 February 2007 | journal = [[Biographical Memoirs of Fellows of the Royal Society]] | year = 2011 }}</ref>▼
He has served as a corporate research advisor for various entities, including [[Cambridge Display Technology]], the [[European Commission]] and [[Unilever]]. In 2007, he was awarded the [[Royal Society]]'s [[Royal Medal]] 'for his many outstanding contributions and for continuing to use his prodigious talents on behalf of industry, government and academe to this day'.<ref>{{cite web|url=https://docs.google.com/spreadsheets/d/1dsunM9ukGLgaW3HdG9cvJ_QKd7pWjGI0qi_fCb1ROD4/pubhtml?gid=1640032608&single=true|title=Award winners : Royal Medal|access-date=30 January 2024|via=[[Google Sheets]]|publisher=[[Royal Society]]}}</ref>
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==Research==
While working for the [[Ministry of Defence (United Kingdom)|Ministry of Defence]], Hilsum helped develop commercial applications for [[gallium arsenide]], and was responsible for creating the UK's first [[semiconductor laser]]. He was one of the developers of the
[[Ridley Watkins Hilsum theory|Ridley-Watkins-Hilsum theory]] that provided the theoretical basis of the [[Gunn diode]],<ref>{{cite web|url=http://www.mwrf.com/Articles/Print.cfm?ArticleID=19913|title=
==Personal life==
He married Betty Hilsum, with whom he had two daughters, [[Lindsey Hilsum|Lindsey]], a correspondent for [[Channel 4]]<ref>{{cite news|url=
==Works==
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==References==
{{Reflist|2}}
==External links==
{{NPG name|id = 06516}}
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[[Category:English physicists]]
[[Category:Semiconductor physicists]]
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[[Category:Fellows of the Royal Society]]
[[Category:Fellows of the Royal Academy of Engineering]]
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[[Category:Presidents of the Institute of Physics]]
[[Category:People educated at Raine's Foundation School]]
[[Category:General Electric Company
[[Category:Royal Navy personnel of World War II]]
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