Search Results - "Palosaari, Jaakko"

Piezoelectric Energy Harvesting from Rotational Motion to Power Industrial Maintenance Sensors by Palosaari, Jaakko, Juuti, Jari, Jantunen, Heli

“…In industry, forecasting machinery failures could save significant time and money if any maintenance breaks are predictable. The aim of this work was to…”
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Optical coherence tomography as a method of quality inspection for printed electronics products by Czajkowski, Jakub, Prykäri, Tuukka, Alarousu, Erkki, Palosaari, Jaakko, Myllylä, Risto

“…Application of time domain, ultra high resolution optical coherence tomography (UHR-OCT) in printed electronics products’ quality inspection is demonstrated…”
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A Game Changer: A Multifunctional Perovskite Exhibiting Giant Ferroelectricity and Narrow Bandgap with Potential Application in a Truly Monolithic Multienergy Harvester or Sensor by Bai, Yang, Tofel, Pavel, Palosaari, Jaakko, Jantunen, Heli, Juuti, Jari

“…An ABO3‐type perovskite solid‐solution, (K0.5Na0.5)NbO3 (KNN) doped with 2 mol% Ba(Ni0.5Nb0.5)O3−δ (BNNO) is reported. Such a composition yields a much…”
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The effects of substrate layer thickness on piezoelectric vibration energy harvesting with a bimorph type cantilever by Palosaari, Jaakko, Leinonen, Mikko, Juuti, Jari, Jantunen, Heli

“…[Display omitted] •Four piezoelectric bimorph type cantilevers for vibration energy harvesting were manufactured.•The cantilevers had the same dimensions with…”
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A Simplified Method for Designing Highly-Efficient Reflective Metasurfaces With Wide Steering Angles by Kong, Di, Phan, Tung Duy, Palosaari, Jaakko, Juuti, Jari, Parssinen, Aarno, Soh, Ping Jack

“…Reconfigurable intelligent surfaces (RISs) are envisioned as a key enabler in the sub-Terahertz (sub-THz) 6 G bands to overcome the limited coverage and range,…”
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Energy harvesting with a cymbal type piezoelectric transducer from low frequency compression by Palosaari, Jaakko, Leinonen, Mikko, Hannu, Jari, Juuti, Jari, Jantunen, Heli

“…In this paper a piezoelectric energy harvester based on a Cymbal type structure is presented. A piezoelectric disc ∅35 mm was confined between two convex steel…”
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A Single‐Material Multi‐Source Energy Harvester, Multifunctional Sensor, and Integrated Harvester–Sensor System—Demonstration of Concept by Bai, Yang, Palosaari, Jaakko, Tofel, Pavel, Juuti, Jari

“…Single‐source energy harvesters that convert solar, thermal, or kinetic energy into electricity for small‐scale smart electronic devices and wireless sensor…”
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Combined electrical and electromechanical simulations of a piezoelectric cymbal harvester for energy harvesting from walking by Leinonen, Mikko, Palosaari, Jaakko, Juuti, Jari, Jantunen, Heli

“…In this article, simulation combining real-life mechanical input energy with electromechanical and electrical behavior of piezoelectric energy harvester and…”
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Current Modulation by Optoelectric Control of Ferroelectric Domains by Vats, Gaurav, Peräntie, Jani, Palosaari, Jaakko, Juuti, Jari, Seidel, Jan, Bai, Yang

“…Optoelectric control of domains is likely to pave the foundation for optoferroelectric devices. This work reports the combined effect of light and low-voltage…”
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Energy Harvesting with a Bimorph Type Piezoelectric Diaphragm Multilayer Structure and Mechanically Induced Pre-stress by Leinonen, Mikko, Juuti, Jari, Jantunen, Heli, Palosaari, Jaakko

“…The energy harvester is constructed from four circular bimorph type piezoelectric diaphragms which are stacked and pre‐stressed with a mechanical spring…”
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End cap profile optimization of a piezoelectric Cymbal actuator for quasi-static operation by using a genetic algorithm by Poikselkä, Katja, Leinonen, Mikko, Palosaari, Jaakko, Vallivaara, Ilari, Haverinen, Janne, Röning, Juha, Juuti, Jari

“…This article describes how an extrinsically amplified Cymbal-type piezoelectric actuator is optimized for displacement generation by using genetic algorithms…”
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Carbon‐Nanotube‐Based Electrical Brush Contacts by Toth, Geza, Mäklin, Jani, Halonen, Niina, Palosaari, Jaakko, Juuti, Jari, Jantunen, Heli, Kordas, Krisztian, Sawyer, W. Gregory, Vajtai, Robert, Ajayan, Pulickel M.

“…Electrical properties of brush contacts made of bulk carbon nanotube forest are significantly better than the presently used commercial products due to the…”
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Non-uniform electric field in poling of structurally graded monolithic piezoactuator by Palosaari, Jaakko Johannes, Juuti, Jari, Heinonen, Esa, Moilanen, Veli-Pekka, Jantunen, Heli

“…In this paper the effect of a non-uniform electric poling field and its optimisation for structurally graded piezoelectric actuators are investigated. The two…”
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Structurally Graded Monolithic Piezoelectric Actuators, Modeling and Optimization with FEM by Heinonen, Esa, Juuti, Jari, Moilanen, Veli-Pekka, Palosaari, Jaakko, Jantunen, Heli

“…In this work, novel structurally graded piezoelectric disc actuators are proposed. The monolithic gradient actuators had nonuniform thickness profiles, which…”
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A vibrational energy harvester based on Soft-Nonlinearity for truly random excitation by Trigona, Carlo, Palosaari, Jaakko, Bai, Yang

“…In this paper, we present a nonlinear energy harvester that is based on a "soft-mode" nonlinearity and is able to work in presence of a truly random…”
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Sub-THz Spatially Modulated Beam Splitting Reflectors for Potential RIS Implementations by Phan, Duy Tung, Palosaari, Jaakko, Kong, Di, Siponkoski, Tuomo, Myllymaki, Sami, Leinonen, Marko E., Parssinen, Aarno, Juuti, Jari, Soh, Ping Jack

“…Reconfigurable intelligent surfaces (RISs) promise to revolutionize wireless communications by creating a smart electromagnetic environment. They facilitate…”
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