Design Thinking in a Technology Driven Context: To develop a scheme for exploration for Thales Design Centre

Thales, a well-known company that provides products and services for the aerospace, defence, transportation and security markets, is a technology driven company. The usual approach to innovation within a technology driven company is to focus on the development of a technology, and once the technology is ready, find application for it in the...

A hybrid scheme for real-time prediction of bus trajectories

The uncertainty associated with public transport services can be partially counteracted by developing real-time models to predict downstream service conditions. In this study, a hybrid approach for predicting bus trajectories by integrating multiple predictors is proposed. The prediction model combines schedule, instantaneous and historical...

Mobility and Decay Dynamics of Charge Carriers in One-Dimensional Selenium van der Waals Solid

Trigonal selenium is a semiconducting van der Waals solid that consists of helical atomic chains. We studied the mobility and decay dynamics of excess electrons and holes moving along the selenium chains. Excess charge carriers were generated by irradiation of powdered selenium with 3 MeV electron pulses. Their mobility and decay via trapping...

A strain-induced exciton transition energy shift in CdSe nanoplatelets: The impact of an organic ligand shell

We study the influence of surface passivating ligands on the optical and structural properties of zinc blende CdSe nanoplatelets. Ligand exchange of native oleic acid with aliphatic thiol or phosphonic acid on the surface of nanoplatelets results in a large shift of exciton transition energy for up to 240 meV. Ligand exchange also leads to...

Charge Mobility and Recombination Mechanisms in Tellurium van der Waals Solid

Trigonal tellurium is a small band gap elemental semiconductor consisting of van der Waals bound one-dimensional helical chains of tellurium atoms. We study the temperature dependence of the charge carrier mobility and recombination pathways in bulk tellurium. Electrons and holes are generated by irradiation of the sample with 3 MeV electrons...

Unconventional Thermally Activated Indirect to Direct Radiative Recombination of Electrons and Holes in Tin Disulfide Two- Dimensional van der Waals Material

Tin disulfide (SnS2) is a two-dimensional semiconducting van der Waals material with an indirect band gap. We measured the mobility and recombination dynamics of charge carriers as a function of temperature and charge density. Excess electrons and holes were generated by pulsed irradiation with 3 MeV electrons. The charge carriers were probed by...

Mobility and Recombination Dynamics of Charges in Low-Dimensional Van Der Waals Materials

This doctoral thesis reports studies on effects of temperature and density on the<br/>mobility and recombination dynamics of charge carriers in low-dimensional van<br/>der Waals materials.

Visual Analysis for Narcolepsy

Narcolepsy is a chronic neurological condition that results from the dysregulation of the sleep-wake cycle occurring in an early stage, specifically in adolescence. Patients with narcolepsy experience excessive daytime sleepiness, cataplexy, hypnagogic hallucinations, sleep paralysis and disturbed nocturnal sleep and these symptoms together form...