Institutt for mikrosystemer
Recent Submissions
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Nanoscale hetero-structured Co-Co(OH)2 composite/amorphous carbon core/shell bi-functional electrocatalysts electrochemically evolved from metastable hexagonal-phase cobalt for overall water splitting
(Peer reviewed; Journal article, 2021)Bi-functional electrocatalysts suited to alkaline water splitting systems are highly pursued, towards the most realistic application enabled by simplified electrolyzer design and cost-effective operation. Herein, a novel ... -
ℏ -perturbative solutions of quantum Snyder and Yang models with parameters describing spontaneous symmetry breaking
(Peer reviewed; Journal article, 2023)We introduce the perturbative ℏ-power series (ℏ - Planck constant) providing the algebraic solutions of D=4 quantum Snyder and Yang models which describe relativistic quantum space-times and Lorentz-covariant quantum phase ... -
Quantum perturbative solutions of extended Snyder and Yang models with spontaneous symmetry breaking
(Peer reviewed; Journal article, 2023)We propose ħ-expansions as perturbative solutions of quantum extended Snyder and Yang models, with ħ-independent classical zero-th order terms responsible for the spontaneous breaking D = 4 and D = 5 de Sitter symmetries. ... -
Fuzzy Gain-Scheduling PID for UAV Position and Altitude Controllers
(Peer reviewed; Journal article, 2022)Unmanned aerial vehicle (UAV) applications have evolved to a wide range of fields in the last decade. One of the main challenges in autonomous tasks is the UAV stability during maneuvers. Thus, attitude and position control ... -
DFT Calculation of Carbon-Doped TiO2 Nanocomposites
(Peer reviewed; Journal article, 2023)Titanium dioxide (TiO2) has been proven to be an excellent material for mitigating the continuous impact of elevated carbon dioxide concentrations. Carbon doping has emerged as a promising strategy to enhance the CO2 ... -
Post-Processing Air Temperature Weather Forecast Using Artificial Neural Networks with Measurements from Meteorological Stations
(Peer reviewed; Journal article, 2022)Human beings attempt to accurately predict the weather based on their knowledge of climate. The Norwegian Meteorological Institute is responsible for climate-related matters in Norway, and among its contributions is the ... -
Fully-Conjugated Covalent Organic Frameworks with Two Metal Sites for Oxygen Electrocatalysis and Zn–Air Battery
(Peer reviewed; Journal article, 2023)Covalent organic frameworks (COFs) are a promising alternative toward catalysis, due to the unique framework structure and the excellent chemical stability. However, the scarcity of unsaturated metal sites and the low ... -
Broadband Vibration-Based Energy Harvesting for Wireless Sensor Applications Using Frequency Upconversion
(Peer reviewed; Journal article, 2023)Silicon-based kinetic energy converters employing variable capacitors, also known as electrostatic vibration energy harvesters, hold promise as power sources for Internet of Things devices. However, for most wireless ... -
Generalized quantum phase spaces for the κ-deformed extended Snyder model
(Peer reviewed; Journal article, 2023)We describe, in an algebraic way, the κ-deformed extended Snyder models, that depend on three parameters β, κ and λ, which in a suitable algebra basis are described by the de Sitter algebras o(1, N). The commutation relations ... -
Computer Vision Based Path Following for Autonomous Unmanned Aerial Systems in Unburied Pipeline Onshore Inspection
(Peer reviewed; Journal article, 2022)Unmanned Aerial Systems (UAS) are becoming more attractive in diverse applications due to their efficiency in performing tasks with a reduced time execution, covering a larger area, and lowering human risks at harmful ... -
Subthreshold Modeling of a Tunable CMOS Schmitt Trigger
(Journal article; Peer reviewed, 2023)In this article, the subthreshold characteristics of a tunable single input CMOS Schmitt trigger (ST) are modeled for the first time. The high-to-low and low-to-high hysteresis transition points are analytically determined ... -
Modelled sonar and target depth distributions for active sonar operations in realistic environments
(Journal article; Peer reviewed, 2022)Target detection performance of mid-frequency active sonars depends heavily on both sonar and target depth. For a given target depth, a sonar performance model may help predict a sonar depth that maximizes the detection ... -
High-resolution polarization-sensitive Fourier ptychography microscopy using a high numerical aperture dome illuminator
(Journal article; Peer reviewed, 2022)Polarization-sensitive Fourier-ptychography microscopy (pFPM) allows for high resolution imaging while maintaining a large field of view, and without mechanical movements of optical-setup components. In contrast to ordinary ... -
Improved resolution Fourier ptychography scheme using oil-filled dome-shaped LED array
(Peer reviewed; Journal article, 2022)Utilising angular-varied illumination in Fourier Ptychography, the resolution of optical microscopes can be increased and the phase of the sample can also be recovered while maintaining a wide field-of-view. In this work, ... -
Fourier ptychography algorithm based on scaled Fourier transform
(Peer reviewed; Journal article, 2021)This letter discusses an alternative Fourier ptychography algorithm based on the scaled fast Fourier transform propagation. The advantage of this scheme is that it enables a zoom-in capability of the object spectrum and ... -
Analysis of a Low Power Inverting CMOS Schmitt Trigger Operating in Weak Inversion
(Peer reviewed; Journal article, 2022)This article analyzes the operation of a low power inverting CMOS Schmitt trigger in weak inversion. The analysis is based on an earlier proposed analytical model, which relates the hysteresis voltages to the transistors' ... -
Joint International Master in Smart Systems Integrated Solutions
(Chapter, 2021)The Joint International Master in Smart Systems Integrated Solutions (SSIs) will graduate candidates for the ever-growing industry of Smart Systems, ubiquitous in all sectors of society including healthcare, transport, ... -
Nano-Power Monostable-Based Wake-Up Mechanism for Wireless Sensor Networks
(Chapter, 2022)Wireless sensor networks (WSNs) generally consist of thousands of sensor nodes, each one supplied by a battery or harvested energy. To prolong the lifetime of wireless sensor networks, wake-up receivers (WuRxs) are typically ... -
Weak Inversion Model of an Inverting CMOS Schmitt Trigger
(Chapter, 2022)In this article the subthreshold characteristics of an inverting single input CMOS Schmitt trigger circuit are analyzed. Analytical expressions for the low-to-high and high-to-low hysteresis transition voltages are determined. ... -
An Ultra-Low Power Multivibrator-Based Wake-up Receiver for Wireless Sensor Networks
(Chapter, 2021)In recent years wireless sensor networks (WSNs) have gained significant attention because of their implementation in many different fields. As the nodes in WSNs are typically battery-powered, their lifetime is mainly limited ...