Tawfique Hasan: Difference between revisions

Add links
From Wikipedia, the free encyclopedia
Next edit →
Content deleted Content added
VisualWikitext
started page
(No difference)

Revision as of 21:56, 23 November 2021

Tawfique Hasan
Born
Bangladesh
Alma materIslamic University of Technology
University of New South Wales
University of Cambridge
Scientific career
InstitutionsChurchill College, Cambridge
King's College, Cambridge
Thesis Carbon nanomaterials for ultrafast photonics  (2009)

Tawfique Hasan is a and Professor of Nanomaterials at the University of Cambridge. He leads the NanoEngineering Group in the Cambridge Graphene Centre and serves as Deputy Head of Electrical Engineering.

Early life and education

Hasan was born in Bangladesh. He attended the Islamic University of Technology, where he majored in electronic engineering. After completing his undergraduate degree, Hasan moved to Australia, where he joined the University of New South Wales as a Master's student in Microelectronics. His Master's dissertation involved CMOS processing.[1] He moved to the University of Cambridge for his graduate studies, where he worked on carbon nanomaterials for ultrafast photonic devices.[2] Hasan was particularly interested in polymer composites, which can be used as saturable absorbers for optical switches and optical amplifier noise supressors.[2]

Research and career

After earning his doctorate, Hasan joined King's College, Cambridge as a Junior Research Fellow. He was awarded a Royal Academy of Engineering Research Fellowship to work on graphene-based processable electronic devices. He is particularly interested in computation-enabled smart devices. He was made a University Lecturer and Title A Fellow at Churchill College, Cambridge in 2013.[3][4]

Whilst at the University of Cambridge Hasan was a founder of Cambridge Graphene Limited.[5] The company developed a scalabe approach to producing graphene-based inks that are aqueous and non-toxic.[5] He is particularly intersted in roll-to-roll printing of graphene based electronic devices. He worked with Novalia, a technology company in Cambridge, to print water-based graphene inks at high speed (100 m/min).[6][7] Hasan suspended tiny graphene particles of graphene in a solvent mixture that was incorporated into water-based inks. The graphene-based inks are quick to dry, stick to substrates well and are waterproof.[6] He demonstrated it was also possible to print Black phosphorus-based inks using the same approach.[8][9]

The coffee ring effect, a phenomenon of fluid mechanics, can have a detrimental impact on printed electronic devices.[10] The effect occurs because liquid evaporates rapidly at the edges of a droplet, causing particles within the droplets to accumulate and an uneven surface to form.[10] Hasan studied the formation of these coffee rings using high-speed photography.[10] He showed that by combining isopropyl alcohol and 2-Butanol it was possible to better distribute the ink particles, creating thin films of uniform thickness.[10][11]

In 2019 Hasan realised the world's smallest spectrometers (approx 100 µm long) that he showed could be used to image onion cells.[12] The spectrometers were made from semiconductor based nanowires.[13] The composition of the nanowire (semiconductor) gradually changed from one end of the nanowire to another, which altered the optical properties (bandages) along its length.[14][15][16]

Select publications

  • F. Bonaccorso; Z. Sun; T. Hasan; A. C. Ferrari (31 August 2010). "Graphene photonics and optoelectronics". Nature Photonics. 4 (9): 611–622. arXiv:1006.4854. doi:10.1038/NPHOTON.2010.186. ISSN 1749-4885. Wikidata Q29041443.
  • Zhipei Sun; Tawfique Hasan; Felice Torrisi; et al. (23 February 2010). "Graphene Mode-Locked Ultrafast Laser". ACS Nano. 4 (2): 803–810. arXiv:0909.0457. doi:10.1021/NN901703E. ISSN 1936-0851. PMID 20099874. Wikidata Q29304077.
  • Felice Torrisi; Tawfique Hasan; Weiping Wu; et al. (26 March 2012). "Inkjet-Printed Graphene Electronics". ACS Nano. 6 (4): 2992–3006. doi:10.1021/NN2044609. ISSN 1936-0851. PMID 22449258. Wikidata Q57424668.

References

  1. ^ Hasan, Tawfique (2005). A 5V charge pump in a standard 1.8V 0.18um CMOS process (Thesis).
  2. ^ a b Hasan, Tawfique; Sun, Zhipei; Wang, Fengqiu; Bonaccorso, Francesco; Tan, Ping Heng; Rozhin, Aleksey G.; Ferrari, Andrea C. (2009). "Nanotube–Polymer Composites for Ultrafast Photonics". Advanced Materials. 21 (38–39): 3874–3899. doi:10.1002/adma.200901122. ISSN 1521-4095.
  3. ^ Hasan, Dr Tawfique (2013-01-28). "Dr Tawfique Hasan". www.graphene.cam.ac.uk. Retrieved 2021-11-23.
  4. ^ "People – Churchill College". www.chu.cam.ac.uk. Retrieved 2021-11-23.
  5. ^ a b "Cambridge Graphene". www.cambridgegraphene.com. Retrieved 2021-11-23.
  6. ^ a b "New graphene based inks for high-speed manufacturing of printed electronics". University of Cambridge. 2015-10-19. Retrieved 2021-11-23.
  7. ^ Cambridge, University of. "New graphene-based inks for high-speed manufacturing of printed electronics". phys.org. Retrieved 2021-11-23.
  8. ^ Cambridge, University of. "Breakthrough ink discovery could transform the production of new laser and optoelectronic devices". phys.org. Retrieved 2021-11-23.
  9. ^ "Black Phosphorus Ink Compatible with Inkjet Printers Developed". designnews.com. 2017-11-20. Retrieved 2021-11-23.
  10. ^ a b c d "Alcohol beats the coffee ring effect". cosmosmagazine.com. Retrieved 2021-11-23.
  11. ^ Ouellette, Jennifer (2020-08-12). "Adding a dash of alcohol suppresses coffee ring effect in 2D printing inks". Ars Technica. Retrieved 2021-11-23.
  12. ^ Andy Extance2019-09-06T08:27:00+01:00. "Nanowires become smallest-ever spectrometers". Chemistry World. Retrieved 2021-11-23.{{cite web}}: CS1 maint: numeric names: authors list (link)
  13. ^ cen.acs.org https://cen.acs.org/analytical-chemistry/spectroscopy/Chemists-build-tiniest-spectrometer-single/97/web/2019/09. Retrieved 2021-11-23. {{cite web}}: Missing or empty |title= (help)
  14. ^ "Single-nanowires make powerful spectrometers". Physics World. 2019-09-24. Retrieved 2021-11-23.
  15. ^ Yang, Zongyin; Albrow-Owen, Tom; Cui, Hanxiao; Alexander-Webber, Jack; Gu, Fuxing; Wang, Xiaomu; Wu, Tien-Chun; Zhuge, Minghua; Williams, Calum; Wang, Pan; Zayats, Anatoly V. (2019-09-06). "Single-nanowire spectrometers". Science. 365 (6457): 1017–1020. doi:10.1126/science.aax8814.
  16. ^ "Nanowires replace Newton's famous glass prism". Tech Explorist. 2019-09-06. Retrieved 2021-11-23.
Retrieved from "https://en.wikipedia.org/w/index.php?title=Tawfique_Hasan&oldid=1056842165"