Browsing USN Open Archive by Author "Hanke, Ulrik"
Now showing items 1-13 of 13
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Competing anticlastic and piezoelectric deformation at large deflections
Salmani, Hamed; Hanke, Ulrik; Halvorsen, Einar (Peer reviewed; Journal article, 2021)In bending of a purely elastic beam or plate, it is well established that the cross-sectional shape changes character with decreasing bending radius-of-curvature and that the transition can be characterized by the Searle ... -
Constitutive Equations of Piezoelectric Layered Beams with Interdigitated Electrodes
Nguyen, Cuong Hung; Hanke, Ulrik; Halvorsen, Einar (Peer reviewed; Journal article, 2018)This paper establishes the constitutive equations, or linear two-port models, of piezoelectric layered beams with interdigital electrodes (IDEs). The effect of the nontrivial field on the transduction is analyzed. Based ... -
Design of a switchable driving coil for Magnetic Resonance Wireless Power Transfer
Zhaksylyk, Yelzhas; Hanke, Ulrik; Azadmehr, Mehdi (Chapter; Peer reviewed, 2019)This paper presents design and analysis of a switchable inductor suited for active impedance matching in magnetic resonance wireless power transfer systems. The switchable inductor is compact and can be used as both driving ... -
Detection of Ungrounded Objects on Mutual Capacitance Touch Screens
Thoresen, Christian Bjørge; Hanke, Ulrik; Øvergård, Kjell Ivar (Chapter, 2015)Mutual capacitance touch screens are responsible for detecting billions of human fingers touching them around the world every day. Being able to use such screens for detection of ungrounded objects as well, would make it ... -
Modal analysis of piezoelectrically actuated plates with built-in stress by computationally augmented interferometric experiments
Salmani, Hamed; Bodo, Elisabetta; Hanke, Ulrik; Vogl, Andreas; Jain, Shruti; Merlo, Sabina; Halvorsen, Einar (Peer reviewed; Journal article, 2022)The conventional laser doppler vibrometers for modal analysis of micro-structures are expensive and sometimes inaccessible. In this work, a compact, fiber-based interferometric setup is used to carry out the modal analysis ... -
Modeling of QCM for thin layer immobilization in a liquid environment
Ghiasi, Neda (Master thesis, 2022)In this thesis, we develop two models of a quartz crystal microbalance (QCM) to analyze the system’s behavior in liquid sensing. These models detail the device response concerning the changes in sensor geometry, surrounding ... -
Modeling of Ungrounded Tangibles on Mutual Capacitance Touch Screens
Thoresen, Christian Bjørge; Hanke, Ulrik (Peer reviewed; Journal article, 2019)Tangible user interface for touch screens, where interaction happens through tangible objects placed on the screen, is one possible option for addressing the lack of haptic feedback in touch screens. For the development ... -
Recent developments in optical detection technologies in Lab-on-a-Chip devices for biosensing applications
Pires, Nuno Miguel Matos; Dong, Tao; Hanke, Ulrik; Hoivik, Nils (Journal article; Peer reviewed, 2014)The field of microfluidics has yet to develop practical devices that provide real clinical value. One of the main reasons for this is the difficulty in realizing low-cost, sensitive, reproducible, and portable analyte ... -
The Characterisation and Quantification of Immobilised Concanavalin A on Quartz Surfaces Based on The Competitive Binding to Glucose and Fluorescent Labelled Dextran
Hoang, Trinh Bich; Stokke, Bjørn Torger; Hanke, Ulrik; Johannessen, Agne; Johannessen, Erik Andrew (Journal article; Peer reviewed, 2019)The competition between various carbohydrates in the binding to Concanavalin A (Con A) can be exploited in gravimetric microsensors that detect changes in mass or viscoelasticity as a function of glucose concentration. ... -
The impact of area on BAW resonator performance and an approach to device miniaturization
Nguyen, Ngoc; Johannessen, Agne; Rooth, Stig; Hanke, Ulrik (Journal article; Peer reviewed, 2018)The dependence of the performance of thin film bulk acoustic resonator (FBAR) and solidly mounted resonator (SMR), on their areas is studied with the aid of finite element method (FEM) software. Dual step frame method is ... -
Trial functions for reduced-order models of piezoelectrically actuated microelectromechanical systems tunable lenses
Farghaly, Mahmoud A.; Hanke, Ulrik; Akram, Muhammad Nadeem; Halvorsen, Einar (Journal article; Peer reviewed, 2018)Piezoelectrically actuated microelectromechanical systems (MEMS) lens structures can be composed of a clamped square elastic diaphragm partially covered with a thin piezoelectric film leaving a circular transparent region ... -
Tunable lowpass filter with RF MEMS capacitance and transmission line
Saha, Shimul Chandra; Hanke, Ulrik; Sagberg, Håkon; Fjeldly, Tor A; Sæther, Trond (Journal article; Peer reviewed, 2012)We have presented an RF MEMS tuneable lowpass filter. Both distributed transmission lines and RF MEMS capacitances were used to replace the lumped elements. The use of RF MEMS capacitances gives the flexibility of tuning ... -
A unified approach for the calculation of in-plane dielectric constant of films with interdigitated electrodes
Ræder, Trygve Magnus; Hanke, Ulrik; Halvorsen, Einar; Grande, Tor (Peer reviewed; Journal article, 2020)Interdigitated electrodes (IDEs) on dielectric films is an important electrode design in electrical components such as transducers and sensors. Further development and use of IDEs for characterization of the in-plane ...