Import 2022-12-08 21:42 Early Career Research Seminars Patrick hosted four external speakers at an early career researcher seminar. The four speakers were: * Chen-Hsuan Hsu from RIKEN, * Dharmraj Patil from A*STAR – Agency for Science, Technology and Research, * Matthew Coak from University of Warwick * Silvia Motti from University of Oxford * * * *
PhD examiner PhD examiner for Zizhuo Liu Patrick was external examiner for Zizhuo Liu, a PhD candidate in Prof. Huiyun Liu‘s group at University College London. Zizhuo defended his thesis entitled “High-performance III-V Quantum structures and devices grown on Si substrates”.
Darren Graham PhD examiner for Vasilis Georgiadis Patrick was the internal examiner for Vasilis Georgiadis, a member of Dr Darren Graham‘s research group in Manchester. Vasilis defended his thesis entitled “Terahertz-driven manipulation of electron bunches using dielectric-lined waveguides“.
big-data for nano-electronics MRS Fall 2021 - Mobility, Quantum Efficiency and Defect Density from High Throughput Spectroscopy of CsPbBr3 Nanowires Stephen Church will present a talk on his recent work on holistic modelling using high-throughput spectroscopy virtually at MRS Fall 2021. This work, in collaboration with Prof Ernesto Joselevich at the Weizmann Institute uses high-throughput multimodal techniques to simultaneously model mobility, quantum efficiency and defect density from a single correlative
Book chapter Physics and applications of semiconductor nanowire lasers - book chapter published Patrick has contributed a chapter to the new textbook “Semiconductor Nanodevices“, edited by Prof. David Ritchie (University of Cambridge) and published by Elsevier. In his chapter on Physics and Applications of Semiconductor Nanowire Lasers, common features, design rules, seminal works and an outlook for future development are provided.
Group Photo Group lunch After over 18 months, we had a first “all-group” meeting and lunch in person. It’s been a long time, but great to all finally be back in the same place!
Conference Talk Conference Talks: EUROMAT 2021 Group PhD student Ruqaiya Al-Abri and postdoctoral researcher Stephen Church both gave oral talks at EUROMAT 2021. The conference, originally scheduled to be held in-person in Vienna, ran as a virtual meeting. Ruqaiya gave her first oral presentation on her collaboration with Lund University on “High-throughput spectroscopy for optimizing internal
big-data for nano-electronics Invited Talk - SPIE Optics and Photonics 2021 Patrick gave a remote invited talk in the Low Dimensional Materials and Devices session of SPIE 2021, hybrid hosted in San Diego. He spoke about “High-throughput spectroscopy of semiconductor nanowires in the presence of inhomogeneity“ including new material from group members.
Photon Science Institute New Lasers in the Photon Science Institute The group have received and comissioned a new ultrafast laser system courtesy of an EPSRC World-Class Labs grant! The new system, a 20W PHAROS/ORPHEUS-HP can provide tunable 250fs laser pulses from 315nm to 16,000nm at pulse energies up to 10microjoules and repetition rates of 200kHz.
Ana Sanchez New Paper: Defect-Free Axially Stacked GaAs/GaAsP Nanowire Quantum Dots with Strong Carrier Confinement In a new collaboration between Yunyan Zhang and Profs. Huiyun Liu (UCL), Ana Sanchez (Warwick) and David Mowbray (Sheffield) we report the fabrication and measurement of a GaAs/GaAsP quantum dot-in-wire structure in Nano Letters. While many material architechtures have been explored for single photon emission, the GaAsP-GaAs system provides
Ana Sanchez New Publication: Self-Catalyzed AlGaAs Nanowires and AlGaAs/GaAs Nanowire-Quantum Dots on Si Substrates A new collaborative paper led by Giorgos Boros and the team of Xuezhe Yu and Huiyun Liu at University College London has been published in J Phys Chem C. In this work, Giorgos reported the development of high quality ternary nanowires (AlGaAs) grown via MBE. While the AlGaAs/GaAs heterostructure
Akshay Rao PhD examiner for Arelo Tanoh Patrick acted as external examiner for the PhD viva of Arelo Tanoh (a student in the Rao group at the University of Cambridge). Arelo defended his thesis, entited “LUMINESCENT HARNESSING OF 2D TRANSITION METAL DICHALCOGENIDE EXCITONS”.
Andras Botar Welcome to Andras Botar The group will be joined for the next 8 weeks by a summer intern through the “Learning Through Research” program at Manchester. Andras will work on big-data methods for handling, sharing and processing large spectral and imaging datasets produced in the group. Welcome Andras!
GaN New Conference Proceeding: Effect of Micron-scale Photoluminescence Variation on Droop Measurements in InGaN/GaN Quantum Wells Rachel Barrett (a PhD student in the Binks group in Manchester) has had a conference proceeding published in collaboration with the OMS group. The study, on micro-scale spectroscopy of GaN-based quantum wells was presented at Photon 2020 and was carried out in collaboration with the Department of Materials Science at
big-data for nano-electronics Invited Talk - Compound Semiconductor Week 2021 Patrick gave an invited talk at a virtual Compound Semiconductor Week 2021 (nominally in Stockholm) on “A needle in a needlestack – exploiting functional inhomogeneity as a tool for optimized nanooptoelectronics“. This opened the B2 session “Nanowire growth and characterization“.
big-data for nano-electronics MRS Spring - virtual conference presentation Patrick gave a virtual presentation on “High-Throughput Correlative Microscopy and Spectroscopy for Nano-Laser Development” in the CT05 “AI and Automation for Materials Design” session.
OMS Group "In-person" group social Most of the group finally met in-person after 13 months of remote working, taking advantage of the sun and the newly reopened Krobar! A perfect time for a belated in-person welcome to Stephen Church (front right) and Nikesh Patel (front left).
Au Revoir Au Revoir to Stefan Skalsky Congratulations and an “au revoir” to group PhD student Stefan Skalsky, who has accepted a postdoctoral position at the Lancaster University in the group of Qiandong Zhuang. He will work on mid-infared optoelectronics for sensing applications.
Import 2022-12-08 21:42 Welcome to Nikesh! The group welcomes Nikesh Patel as a new EPSRC-funded PhD student working on the Big-data for Nano-Electronics project. Nikesh joins us from an MPhysChem at the University of Edinburgh, and will focus on high-throughput spectroscopy of low-dimensionality nanomaterials.
big-data for nano-electronics Learning through Research Internship available A student experience intership is available in the group for a period of 8 weeks over summer 2021. This paid position is available to any Manchester undergraduate student who is not currently in their final year. They are designed to provide experience of academic research to undergraduates who are considering
big-data for nano-electronics Welcoming back returning MPhys students The group welcomes back our returning MPhys students who will continue on their projects this semester. This includes: Big-data for nano-electronics – development of machine-learning tools for analysis of imaging and spectroscopic data for nanotechnology Rafe Whitehead, Thomas Blackmore, Jonathan Ryding Earth’s-field NMR – design and construction of an NMR system
big-data for nano-electronics New Review : Measuring, controlling and exploiting heterogeneity in optoelectronic nanowires Group PhD students Ruqaiya Al-Abri and Hoyeon Choi have written an invited review article for JPhys Photonics, published today. Lead author Ruqaiya Al-Abri describes this work: Among the one-dimensional structures, semiconductor nanowires have attracted great attention; from the growth process to the production of functional devices they have been widely
Dragomir Neshev PSI Seminar: Prof Dragomir Neshev on night-vision meta-materials The OMS group invited Professor Dragomir Neshev, director of the Australian Research Council Centre of Excellence for Tranformative Metal-Optical Systems to gave the Photon Science Institute Seminar today. He spoke about the new institute and a specific example of non-linear optical metamaterials for night-vision.
ANU New Paper : Facet-Related Non-uniform Photoluminescence in Passivated GaAs Nanowires Our collaborative work on spatially inhomogeneous recombination in semiconductor nanowires has been published in a special issue of Frontiers in Chemistry. The work, led by Dr. Nian (Jenny) Jiang at the University of Cambridge reports the spatially varying emission intensity from passivated nanowires. By comparing the bulk emission to buried
Aruni Fonseka Group Seminar: Aruni Fonseka, Warwick Electron Microscopy Dr Aruni Foseka of the Warwick Electron Microscopy Centre gave a seminar to the group and colleagues at the Photon Science Institute. Her talk covered electron microscopy techniques for nanomaterial characterisation, including dark-field and spectroscopic approaches.
