Welcome to Nathaniel Gallop
We welcome Nathaniel Gallop to the group as a new postdoc, who will be working with Dr Milot on her EPSRC project "Optoelectronic properties of hybrid metal halide perovskites: from nanoscale to devices". Nathaniel joins us from Imperial, where he worked with Dr Bakulin & Prof Nelson on the vibronic control of organic electronic devices.
Congratulations to Maria!
Many congratulations to Maria, who successfully defended her PhD thesis on 21st October. Maria's thesis on "Ultrafast terahertz and optical spectroscopy of 1D van der Waals nanomaterials" describes her work on carbon nanotubes and transition metal dichalcogenide nanotubes. Thanks to her examiners, Prof. Junichiro Kono @Rice and our own Dr Rebecca Milot. Well done Maria!
Postdoc available to work with Dr Milot on perovskites
A new postdoctoral research fellow position is available in the group, to work with Dr Rebecca Milot on charge dynamics in hybrid metal halide perovskites. Full details here - apply by 28th October 2020.
Welcome to our new students!
A warm welcome to our new postgrad students: Goncalo Costa, Junn Keat and Justas Deveikis, who have just started their research in the group.
Congratulations to Maurizio!
Dr Monti has just finished his PhD and completed his IAS Fellowship at Warwick. We wish Maurizio all the best as he leaves Coventry after 4 years to explore pastures new (Denmark). Maurizio was instrumental (pun intended) in setting up the OPTP beamline in WCUS, and made good use of it (plus the TEAS beamline) in his work on carrier cooling in perovskites and InSb, as reported in his thesis. Good luck for your new postdoc post in Aarhus University, Maurizio, we will miss you!
2D sheets of atomically-thin materials have been intensively studied over the last few years, and have been found to bind together via van der Waals forces to create composites with unique optical and electronic properties. Here we report a study of the atomic structure and optoelectronic properties of some of the first examples of radial van der Waals heterostructures, where cylindrical sheets of different semiconductors (nanotubes) encase other materials. As described in our paper in Nano Letters, we found that BN overgrowth around carbon nanotube bundles created a good template for the creation of high-quality MoS2 nanotubes. This outer semiconducting wall had good electrical properties and strong optical absorption (including from the K-point excitons of MoS2), while the inner carbon nanotubes retained their excellent conductivity. This new class of composite may be suitable for unique functional optoelectronic devices on the nanoscale, such as 1D radial p-n junctions or transistors, for instance where the inner carbon nanotubes electrically control the outer semiconductor's conductivity.
PhD research studentships available
Please get in touch if you are interested in a PhD or MSc by Research in the group. We have two funded PhD studentships available for autumn 2020 start, titled Automation of THz imaging for Medical Diagnosis and An ultrafast shakedown of defects in diamond using intense infrared pulses. A number of other projects are suitable for motivated students looking to complete an MSc or a summer research project.
Congratulations Dr Mosley!
Many congratulations to Connor, who finished his PhD in style on the 11th December. Connor's work on "Enhanced Polarisation Control and Extreme Electric Fields: Advances in Terahertz Spectroscopy Applied to Anisotropic Materials and Magnetic Phase Transistions" has led to a new beamline at WCUS and a new type of terahertz radiation source.
Fantastic work, Connor, and best of luck for your next steps!
As part of the Warwick Christmas Lectures 2019 we held an optics-packed pre-show, featuring demos about some of the weird and wonderful properties of light. Members of the Physics Department and Ultrafast & THz group explained important phenomena like fluorescence, infrared light, polarisation and diffraction and more! The "twangs" of the Department's laser harp helped provide some festive music. There were 1100 members of the public at the lecture, a lot of whom made it to the pre-show science bonanza. On stage James talked about the power of lasers, ably assisted by Edward the Elf (below). Thanks to everyone who helped make the Christmas Lecture on 26th Nov such as success! More pictures here...
Photo © Michelle Tennison