189 citations · 527 across the 13 of their papers we have counts for
13 papers
Ultra-high-speed line-scan Raman imaging
Qingyi Wu, Xusheng Tang, Francesco Masia +7
Raman spectroscopic imaging has emerged as a potent tool due to its non-invasive nature and capability for chemical composition analysis. Line-scan Raman spectroscopy accelerates i…
Designing low-loss cavities across the band-gap of photonic crystal slabs
Nadhia Monim, Wolfgang Langbein, Francesco Masia
Photonic crystal cavities (PCCs) are defects in host photonic crystals (PCs) which create bound states in the PC band gap. These bound states are resonant states of the electromagn…
Correlative light electron microscopy using small gold nanoparticles as single probes
Iestyn Pope, Hugh Tanner, Francesco Masia +6
Correlative light electron microscopy (CLEM) requires the availability of robust probes which are visible both in light and electron microscopy. Here we demonstrate a CLEM approach…
Low-energy electron microscopy intensity-voltage data -- factorization, sparse sampling, and classification
Francesco Masia, Wolfgang Langbein, Simon Fischer +2
Low-energy electron microscopy (LEEM) taken as intensity-voltage (I-V) curves provides hyperspectral images of surfaces, which can be used to identify the surface type, but are dif…
uFLIM -- Unsupervised analysis of FLIM-FRET microscopy data
Francesco Masia, Walter Dewitte, Paola Borri +1
Despite their widespread use in cell biology, fluorescence lifetime imaging microscopy (FLIM) data-sets are challenging to analyse, because each spatial position can contain a supe…
99% beta factor and directional coupling of quantum dots to fast light in photonic crystal waveguides determined by hyperspectral imaging
L. Scarpelli, B. Lang, F. Masia +8
Spontaneous emission from excitonic transitions in InAs/GaAs quantum dots embedded in photonic crystal waveguides at 5K into non-guided and guided modes is determined by direct hyp…
Coherence and density dynamics of excitons in a single-layer MoS reaching the homogeneous limit
Tomasz Jakubczyk, Goutham Nayak, Lorenzo Scarpelli +13
We measure the coherent nonlinear response of excitons in a single-layer of molybdenum disulphide embedded in hexagonal boron nitride, forming a -BN/MoS/-BN heterostructu…
Long Exciton Dephasing Time and Coherent Phonon Coupling in CsPbBrCl Perovskite Nanocrystals
Michael A. Becker, Lorenzo Scarpelli, Georgian Nedelcu +7
Fully-inorganic cesium lead halide perovskite nanocrystals (NCs) have shown to exhibit outstanding optical properties such as wide spectral tunability, high quantum yield, high osc…
Background-free 3D nanometric localisation and sub-nm asymmetry detection of single plasmonic nanoparticles by four-wave mixing interferometry with optical vortices
George Zoriniants, Francesco Masia, Naya Giannakopoulou +2
Single nanoparticle tracking using optical microscopy is a powerful technique with many applications in biology, chemistry and material sciences. Despite significant advances, loca…
Resonantly excited exciton dynamics in two-dimensional MoSe monolayers
L. Scarpelli, F. Masia, E. M. Alexeev +4
We report on the exciton and trion density dynamics in a single layer of MoSe, resonantly excited and probed using three-pulse four-wave mixing (FWM), at temperatures from 300K…
Evidence of giant oscillator strength in the exciton dephasing of CdSe nanoplatelets measured by resonant four-wave mixing
Ali Naeem, Francesco Masia, Sotirios Christodoulou +3
We measured the intrinsic ground-state exciton dephasing and population dynamics in colloidal quasi two-dimensional (2D) CdSe nanoplatelets at low temperature (5-50K) using transie…
Femtosecond phase-resolved microscopy of plasmon dynamics in individual gold nanospheres
Francesco Masia, Wolfgang Langbein, Paola Borri
The selective optical detection of individual metallic nanoparticles (NPs) with high spatial and temporal resolution is a challenging endeavour, yet is key to the understanding of…
Spin--flip Limited Exciton Dephasing in CdSe/ZnS Colloidal Quantum Dots
Francesco Masia, Nicolò Accanto, Wolfgang Langbein +1
The dephasing time of the lowest bright exciton in CdSe/ZnS wurtzite quantum dots is measured from 5 K to 170 K and compared with density dynamics within the exciton fine structure…