Tawfique Hasan

Last updated
Tawfique Hasan
Born
Alma mater Islamic University of Technology
University of New South Wales
University of Cambridge
Scientific career
Fields 2D materials
Nanowires
Porous materials
Printed electronics
Sensors [1]
InstitutionsUniversity of Cambridge
Thesis Carbon nanomaterials for ultrafast photonics  (2009)
Website www.nanoengineering.eng.cam.ac.uk OOjs UI icon edit-ltr-progressive.svg

Tawfique Hasan is a Bangladeshi scientist who is Professor of NanoEngineering at the University of Cambridge. [1] [2] He leads the nanoengineering group in the Cambridge graphene centre and serves as deputy head of division B (electrical engineering) in the Department of Engineering, University of Cambridge. [3]

Contents

Early life and education

Hasan was born in Bangladesh. He attended the Islamic University of Technology, where he majored in electronic engineering.[ citation needed ] 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 of Engineering dissertation investigated CMOS processing. [4] He moved to the University of Cambridge for his PhD, where he worked on carbon nanomaterials for ultrafast photonic devices. [5] [6] Hasan was particularly interested in polymer composites, which can be used as saturable absorbers for optical switches and optical amplifier noise suppressors. [6]

Research and career

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. [7] [8]

Whilst at the University of Cambridge, Hasan was a founder of Cambridge Graphene Limited. [9] The company developed a scalable approach to producing graphene-based inks that are aqueous and non-toxic. [9] He is particularly interested 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). [10] [11] 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. [10] He demonstrated that it was also possible to print black phosphorus-based inks using the same approach. [12] [13]

The coffee ring effect, a phenomenon of fluid mechanics, can have a detrimental impact on printed electronic devices. [14] 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. [14] Hasan studied the formation of these coffee rings using high-speed photography. [14] 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. [14] [15]

In 2019, Hasan developed the world's smallest spectrometers (approx. 100 μm long), that he showed could be used to image onion cells. [16] The spectrometers were made from semiconductor-based nanowires. [17] The composition of the nanowire (semiconductor) is gradually changed from one end of the nanowire to another, which altered the optical properties (and band gaps) along the length of the nanowires. [18] [19] [20]

Selected publications

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References

  1. 1 2 Tawfique Hasan publications indexed by Google Scholar OOjs UI icon edit-ltr-progressive.svg
  2. Tawfique Hasan publications from Europe PubMed Central
  3. www.nanoengineering.eng.cam.ac.uk OOjs UI icon edit-ltr-progressive.svg
  4. Hasan, Tawfique (2005). A 5V charge pump in a standard 1.8V 0.18um CMOS process. trove.nla.gov.au (ME thesis). University of New South Wales. OCLC   226250915.
  5. Hasan, Tawfique (2009). Carbon nanomaterials for ultrafast photonics. cam.ac.uk (PhD thesis). University of Cambridge. EThOS   603832.
  6. 1 2 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. S2CID   36587931.
  7. Hasan, Dr Tawfique (2013-01-28). "Dr Tawfique Hasan". graphene.cam.ac.uk. Retrieved 2021-11-23.
  8. "People – Churchill College". chu.cam.ac.uk. Retrieved 2021-11-23.
  9. 1 2 "Cambridge Graphene". cambridgegraphene.com. Retrieved 2021-11-23.
  10. 1 2 "New graphene based inks for high-speed manufacturing of printed electronics". cam.ac.uk. University of Cambridge. 2015-10-19. Retrieved 2021-11-23.
  11. Cambridge, University of. "New graphene-based inks for high-speed manufacturing of printed electronics". phys.org. Retrieved 2021-11-23.
  12. Cambridge, University of. "Breakthrough ink discovery could transform the production of new laser and optoelectronic devices". phys.org. Retrieved 2021-11-23.
  13. "Black Phosphorus Ink Compatible with Inkjet Printers Developed". designnews.com. 2017-11-20. Retrieved 2021-11-23.
  14. 1 2 3 4 "Alcohol beats the coffee ring effect". cosmosmagazine.com. Retrieved 2021-11-23.
  15. Ouellette, Jennifer (2020-08-12). "Adding a dash of alcohol suppresses coffee ring effect in 2D printing inks". arstechnica.com. Retrieved 2021-11-23.
  16. Extance, Andy (2019). "Nanowires become smallest-ever spectrometers". chemistryworld.com. Chemistry World . Retrieved 2021-11-23.
  17. "Chemists build the tiniest spectrometer from a single nanowire". acs.org. Retrieved 2021-11-23.
  18. "Single-nanowires make powerful spectrometers". physicsworld.com. Physics World. 2019-09-24. Retrieved 2021-11-23.
  19. 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). "Single-nanowire spectrometers". Science. 365 (6457): 1017–1020. doi: 10.1126/science.aax8814 . PMID   31488686. S2CID   201845940.
  20. "Nanowires replace Newton's famous glass prism". techexplorist.com. 2019-09-06. Retrieved 2021-11-23.