Institutt for elektroniske systemer
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Comparing the broadband acoustic frequency response of single, clustered and arrays of marine air guns
(Peer reviewed; Journal article, 2020)Field data acquired from a seismic vessel by a seabed hydrophone is used to analyze the broadband response (10 Hz to 62.5 kHz) for various source configurations: single air guns, clustered air guns, and a full array ... -
Signal enhancement in microstructured silicon attenuated total reflection elements with quantum cascade laser-based spectroscopy
(Peer reviewed; Journal article, 2020)Sensors in mid-infrared spectroscopy based on attenuated total reflection (ATR) sensing with internal reflection elements (IREs) facilitate easier measurements of aqueous solutions or other opaque analytes. Micromachined ... -
A Low-power and Low-noise Multi-purpose Chopper Amplifier with High CMRR and PSRR
(Chapter, 2020)In this article, by choosing and optimizing suitable structure in each stage, we have designed a multi-purpose low noise chopper amplifier. The proposed neural chopper amplifier with high CMRR and PSRR is suitable for EEG, ... -
Performance Assessment of Transient Signal Detection Methods and Superiority of Energy Criterion (EC) Method
(Peer reviewed; Journal article, 2020)Radio frequency fingerprinting (RFF) based on RF transients is one of the most effective techniques for improving wireless security. For an efficient RFF development, RF transients need to be accurately detected. However, ... -
High-performance stationary solar tracking through multi-objective optimization of beam-steering lens arrays
(Peer reviewed; Journal article, 2020)Beam-steering lens arrays enable solar tracking using millimeter-scale relative translation between a set of lens arrays. This may represent a promising alternative to the mechanical bulk of conventional solar trackers, ... -
Variational Mode Decomposition-Based Threat Classification for Fiber Optic Distributed Acoustic Sensing
(Peer reviewed; Journal article, 2020)In this study, a novel method is proposed to detect and classify the threats for fiber optic distributed acoustic sensing (DAS) systems. In the study, phase-sensitive optical time-domain reflectometry (phase-OTDR) is ... -
Using Fiber-Optic Sensors to Give Insight into Liquid-Solid Phase Transitions in Pure Fluids and Mixtures
(Peer reviewed; Journal article, 2020)Fiber optic sensors offer a new and unique way to detect and analyze phase transitions, due to their small thermal mass and inert material. This paper presents and demonstrates a dual-sensor system to detect and analyze ... -
Infrared measurements of glucose in peritoneal fluid with a tuneable quantum cascade laser
(Peer reviewed; Journal article, 2020)Fast and accurate continuous glucose monitoring is needed in future systems for control of blood glucose levels in type 1 diabetes patients. Direct spectroscopic measurement of glucose in the peritoneal cavity is an ... -
Effects of field annealing on MnN/CoFeB exchange bias systems
(Peer reviewed; Journal article, 2019)We report the effects of nitrogen diffusion on exchange bias in MnN/CoFeB heterostructures as a function of MnN thickness and field-annealing temperature. We find that competing effects occur in which high-temperature ... -
Extended Adjacency and Scale-Dependent Graph Fourier Transform via Diffusion Distances
(Peer reviewed; Journal article, 2020)This article proposes the augmentation of the adjacency model of networks for graph signal processing. It is assumed that no information about the network is available, apart from the initial adjacency matrix. In the ... -
Semiconductor-graphene hybrid structures and optoelectronic devices
(Doctoral theses at NTNU;2020:258, Doctoral thesis, 2020)In order to utilise the intriguing properties discovered in nanomaterials during the last decades, structures and devices that do exactly that have to be developed. Graphene, the carbon wondermaterial discovered in 2004, ... -
Hyperspectral characterization of re‐epithelialization in an in vitro wound model
(Peer reviewed; Journal article, 2020)In vitro wound models are useful for research on wound re‐epithelialization. Hyperspectral imaging represents a non‐destructive alternative to histology analysis for detection of re‐epithelialization. This study aims to ... -
Cost-Effective Live Cell Density Determination of Liquid Cultured Microorganisms
(Peer reviewed; Journal article, 2017)Live monitoring of microorganisms growth in liquid medium is a desired parameter for many research fields. A wildly used approach for determining microbial liquid growth quantification is based on light scattering as the ... -
Exploiting scale-invariance: a top layer targeted inverse model for hyperspectral images of wounds
(Peer reviewed; Journal article, 2020)Detection of re-epithelialization in wound healing is important, but challenging. Hyperspectral imaging can be used for non-destructive characterization, but efficient techniques are needed to extract and interpret the ... -
GaN/AlGaN nanocolumn ultraviolet light-emitting diode using double-Layer graphene as substrate and transparent electrode
(Journal article, 2019)The many outstanding properties of graphene have impressed and intrigued scientists for the last few decades. Its transparency to light of all wavelengths combined with a low sheet resistance makes it a promising electrode ... -
A Database for the Radio Frequency Fingerprinting of Bluetooth Devices
(Peer reviewed; Journal article, 2020)Radio frequency fingerprinting (RFF) is a promising physical layer protection technique which can be used to defend wireless networks from malicious attacks. It is based on the use of the distinctive features of the physical ... -
Zero-Emission Autonomous Ferries for Urban Water Transport: Cheaper, Cleaner Alternative to Bridges and Manned Vessels
(Journal article, 2019)Because water is an integral part of day-to-day life for humans, civilizations have generally flourished either in coastal areas or near river basins. Today, about 40% of the world?s population lives near a coast and many ... -
Emergent premises in student experiences of a first-year electrical engineering course
(Peer reviewed; Journal article, 2020)This study explores how project-based learning in combination with other pedagogical scaffolding approaches influences students’ experiences during their transition into the university. Based on the thematic analysis of ... -
Ice formation and growth in supercooled water–alcohol mixtures: Theory and experiments with dual fiber sensors
(Peer reviewed; Journal article, 2020)Increased knowledge on fluid-solid phase transitions is needed, both when they are undesired and can impair processes operation, and when strict control is required in fields such as food technology, the pharmaceutical ... -
Visualisation of Limb Movements by Accelerometers in Sedated Patients
(Peer reviewed; Journal article, 2020)The prognostication of neurological outcome in sedated ICU patients is challenging. Multiple clinical scoring schemes and examinations are used, where different motoric responses are important input variables. Accelerometery ...
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