This presentation concerns the investigation of multimodal tissue spectroscopy as an in vivo optical biopsy method for the non-invasive characterization and analysis of human skin conditions applied to skin cancer diagnosis. The results of a clinical trial involving 140 patients with skin carcinomas will be presented including (i) a description of ...
Published in European Journal of Physics
We present a facile and low-cost undergraduate laboratory experiment to study exciton physics. Using a simple abrasion technique to create samples of thin-film van der Waals material samples and a low-cost spectrometer, we show that prominent excitonic features can be easily resolved in the optical transmission spectra of semiconducting transition ...
Published in 2D Materials
Modulation of the Fermi level using an ultraviolet (UV)-assisted photochemical method is demonstrated in tungsten diselenide monolayers. Systematic shifts and relative intensities between charged and neutral exciton species indicate a progressive and controllable decrease of the electron density and switch tungsten diselenide from n-type to a p-typ...
Raw data for main text and extended data figures. Each folder contains a README file with information on how to plot and manipulate data. Associated codes for analysis of data. / Clare College Cambridge Junior Research Fellowship
Published in New Journal of Physics
Polyatomic molecules have been identified as sensitive probes of charge-parity violating and parity violating physics beyond the Standard Model (BSM). For example, many linear triatomic molecules are both laser-coolable and have parity doublets in the ground electronic X˜2Σ+(010) state arising from the bending vibration, both features that can grea...
Published in Electronic Structure
Optical spectroscopy (UV–vis and fluorescence spectroscopy) is sensitive to the chemical environment and conformation of fluorophores and therefore, serves as an ideal probe for the conformation and solvent responses. Tyrosine kinase inhibitors (TKI) such as AG-1478 of epidermal growth factor receptor when containing a quinazolinamine scaffold are ...
Anthropogenic climate change needs urgent tackling to keep the global temperature rise below 2 °C above pre-industrial levels. Renewable energy use, energy efficiency, and other measures are necessary to achieve this goal. Lead halide perovskites have in the past decade shown themselves to be a promising, novel solar cell technology, with efficienc...
Defects usually behave as imperfections in materials that significantly degrade their performance. However, the unusual optoelectronic performance in metal halide perovskites in the presence of defects opens the way for strain and optoelectronic properties tailoring with ion irradiation. We have performed defects and strain engineering in triple-ca...
Published in Laser Physics Letters
A transparent sesquioxide ceramic (Er0.07La0.10Y0.83)2O3 was fabricated by vacuum sintering at 1780 °C for 3 h with lanthana acting as a sintering additive. It was of single-phase nature (sp. gr. Ia 3ˉ ) with a close-packed microstructure (average grain size: 17 μm, pore content: 5 ppmv) and high transparency of 80% at 1.1 μm. The La3+ ions induced...
Published in Frontiers in Energy Research
This paper focuses on laser-induced breakdown spectroscopy (LIBS) as an off-gas sensor and details a conceptual irradiation experiment to evaluate its performance in an environment that is more realistic of an operational molten salt reactor (MSR). MSRs are a promising advanced nuclear design that use high-temperature liquid salts as the coolant, f...
