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S. Vollebregt

35 records found

Air pollutants like NO2 are harmful in small concentrations, and gas sensors are needed that can detect gases in such low quantities. A promising candidate for this is doping graphene, a single layer of carbon atoms, with nitrogen impurities, and using this material as a chemores ...
Carbon dioxide (CO2) detection is vital in various fields, such as environmental monitoring, healthcare, and industry. Metal oxides are the sensing material because of their high sensitivity and stability. However, they have limitations in detecting CO2 as C ...
Deposited dielectrics with low loss at millimeter-submillimeter (mm-submm) wavelengths are beneficial for the development of superconducting integrated circuits (ICs) for astronomy, such as filter banks, on-chip Fourier-transform spectrometers, and kinetic inductance parametric a ...
Graphene, despite its exceptional electrical properties, is not suitable as a channel material in field-effect transistors due to its zero band gap. Engineered graphene structures, such as graphene nanoribbons, have been proposed to overcome this limitation. However, nanoribbons, ...
In the semiconductor industry, the ongoing demand for the miniaturization of electronic devices has significantly increased the number of components integrated into a single wafer. Consequently, the dimensions of interconnects in integrated circuits (ICs) must be minimized to con ...
Chip forensics has become an important aspect of law enforcement for retrieving data from data carriers. Improving data encryption techniques, smaller technology nodes and increasing chip design complexity instigate the constant need for new software and hardware hacking methods. ...
This Bachelor of Science thesis presents the development of a portable readout system for a graphenebased gas sensor array, aiming to bring advanced gas sensing technology from a controlled laboratory environment to practical field applications, such as greenhouses and vineyards. ...

Graphene Genetics

Designing an Analog-to-Digital Converter in Graphene Utilizing an Evolutionary Algorithm

As advances in silicone CMOS technology steadily plateau, new avenues of electronics design must be explored. Graphene Nanoribbons (GNRs) are a potential solution. Current GNR designs require wasteful exhaustive searches for the required device topologies, limiting the size of th ...
Electronic interfaces, particularly microelectrode arrays (MEAs), are crucial for studying electrophysiological processes in the body, with applications ranging from implants to deep brain simulators. In neuroscience, they play a vital role in exploring neuronal cell distribution ...
Resolving the underlying mechanisms of complex brain functions and associated disorders remains a major challenge in neuroscience, largely due to the difficulty in mapping large-scale neural network dynamics with high temporal and spatial resolution. Multimodal neural platforms t ...
Graphene-based neural interfaces offer an innovative solution to surpass the resolution limit of traditional neural recording, integrating neuroelectronics with optogenetics for combined electrophysiological and optical neural monitoring, among others. Three important factors in ...
IN advancing the ’More thanMoore’ paradigm, heterogeneous integration has emerged to facilitate the creation of highly efficient, compact, and multi-functional semiconductor systems. Addressing the challenges related to power efficiency, superior performance, and integration dens ...
As silicon carbide(SiC) gets more and more attention from the semiconductor industry due to its robust mechanical and chemical properties, reliable and standardized processing technologies such as reactive ion etching(RIE) for SiC are in great demand. This is because of the diffi ...
Numerous advancements have been made in transparent electrode technologies that can complement optogenetics and imaging modalities. However, several obstacles restrict the design and material of electrode devices, including the required flexibility, transparency, low impedance, h ...
Graphene as an allotrope of carbon is promising for the detection of gaseous molecules due to its extremely high surface-to-volume ratio. However, its low selectivity poses a major problem for practical applications. The work presented in this thesis addresses the selectivity pro ...
The evolution of microphone technology can be linked to the growing multimedia and communication market. The first is linked to the music and audiovisual industry, while the latter is linked to smartphones, smart mobility, and home automation. In all of these audio applications, ...
Metal oxide nanoparticle gas sensors showpromise due to their high sensitivity towards a wide range of gases, low costs, and low complexity. Particle sizes at nanometers offer a high surface-to-volume ratio which provides more areas on the surface where reactions can occur. This ...
To extend Moore’s law, silicon carbide devices attend the researcher’s attention due to their irreplaceable advantages such as high critical breakdown electrical field, wide bandgap and excellent thermal conductivity without sacrificing too much charge carrier mobility. However, ...