Blar i Institutt for mikrosystemer på tidsskrift "Journal of Physics, Conference Series"
Viser treff 1-15 av 15
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Architecture-independent power bound for vibration energy harvesters
(Journal article; Peer reviewed, 2013)The maximum output power of energy harvesters driven by harmonic vibrations is well known for a range of specific harvester architectures. An architecture-independent bound based on the mechanical input-power also exists ... -
Comparative performance of voltage multipliers for MEMS vibration-based energy harvesters
(Journal article; Peer reviewed, 2018)This paper investigates by numerical simulation the performance of an electrostatic vibration energy harvester when it is electrically configured in two different diode-capacitor multiplier topologies. The complete ... -
Electric control of power extracting end-stop for MEMS vibration energy harvesting
(Journal article; Peer reviewed, 2014)This experimental work investigates a technique to further improve performance of vibration energy harvesters under displacement-constrained operation. Previously, a device concept based on end-stops acting as additional ... -
Electrode optimization of an electret-based vibration generator in slot-effect configuration
(Journal article; Peer reviewed, 2018)This paper offers insights into optimization of electret-based energy harvesters made of two patterned electrodes facing movable electret strips parallelized with a pitch p. The effective electrode dimension of such harvester ... -
Electrostatic energy harvesters and fundamental limits to power
(Journal article; Peer reviewed, 2018)Analysis of fundamental performance limits to vibration energy harvesting reveal how damping and electromechanical coupling affect performance both for narrow and wide-band excitations. This talk summarizes the performance ... -
Equivalent-circuit model for slot-effect configuration of an electret-based generator
(Journal article; Peer reviewed, 2016)This paper presents a completely analytical method to build a lumped-model for an electret-based energy harvester. The harvester consists of two patterned electrodes facing movable electret patterns in a slot-effect ... -
Experimental validation of damping model for a MEMS bistable electrostatic energy harvester
(Journal article; Peer reviewed, 2014)This paper validates lumped models of an asymmetric bistable MEMS electrostatic energy harvester against measurements. A conventional model of constant damping coefficient turns out to be ineffective in predicting or ... -
Experiments on power optimization for displacement-constrained operation of a vibration energy harvester
(Journal article; Peer reviewed, 2015)This paper presents experiments on how to approach the physical limits on power from vibration energy harvesting under displacement-constrained operation. A MEMS electrostatic vibration energy harvester with voltage-control ... -
Graphene synthesized on porous silicon for active electrode material of supercapacitors
(Journal article; Peer reviewed, 2016)We present graphene synthesized by chemical vapour deposition under atmospheric pressure on both porous nanostructures and flat wafers as electrode scaffolds for supercapacitors. A 3nm thin gold layer was deposited on ... -
Low power electronic interface for electrostatic energy harvesters
(Journal article; Peer reviewed, 2015)This paper presents design and simulation of a power electronic interface circuit for MEMS electrostatic energy harvesters. The designed circuit is applicable to highly miniaturized electrostatic harvesters with small ... -
MEMS electrostatic influence machines
(Journal article; Peer reviewed, 2016)This paper analyses the possibility of MEMS electrostatic influence machines using electromechanical switches like the historical predecessors did two centuries ago. We find that a generator design relying entirely on ... -
On-chip supercapacitor electrode based on polypyrrole deposited into nanoporous Au scaffold
(Journal article; Peer reviewed, 2016)On-chip supercapacitors hold the potential promise for serving as the energy storage units in integrated circuit system, due to their much higher energy density in comparison with conventional dielectric capacitors, high ... -
Power-electronic-interface topology for MEMS energy harvesting with multiple transducers
(Journal article; Peer reviewed, 2018)Based on circuit simulations, this paper investigates a concept for a power electronic interface circuit for MEMS electrostatic energy harvesters. Two ordinary overlap-varying transducers are first electrically configured ... -
Self-tuning behavior of a clamped-clamped beam with sliding proof mass for broadband energy harvesting
(Journal article; Peer reviewed, 2013)Real world systems rarely vibrate at a single resonance frequency and the frequencies drift over time. Tunable devices exist, but generally need additional energy to achieve frequency adaptation. This means that the benefits ... -
Which is better, electrostatic or piezoelectric energy harvesting systems?
(Journal article; Peer reviewed, 2015)This paper answers the often asked, and until now inadequately answered, question of which MEMS compatible transducer type achieves the best power density in an energy harvesting system. This question is usually poorly ...