This paper provides an analysis for the performance evaluation of a piezoelectric energy harvesting system using synchronized switch on inductor (SSHI) electronic interface. In contrast with estimates based variety approximations in literature, analytic expression harvested power is derived explicitly and validated numerically SSHI system. It shown that electrical response ideal interface similar to standard strongly coupled electromechanical operated at short circuit resonance. On other...

In this paper, we present the development of two piezoelectric MEMS generators, {3–1} mode and {3–3} mode, which have ability to scavenge mechanical energy ambient vibrations transform it into useful electrical power. These generators are cantilever type made by a silicon process can through its PZT layers. We developed deposition machine uses an aerosol method fabricate high-quality thin film efficiently. Our experimental results show that our device possesses maximum open circuit output...

SSHI (synchronized switch harvesting on inductor) techniques have been demonstrated to be capable of boosting power in vibration-based piezoelectric energy harvesters. However, the effect frequency deviation from resonance electrical response an system has not taken into account original analysis. Here improved analysis accounting for such is proposed investigate behavior a series-SSHI system. The analytic expression harvested and validated numerically. Its performance evaluation carried out...

Abstract Potentially applied in low-noise applications such as structural health monitoring (SHM), a 1-axis piezoelectric MEMS accelerometer based on aerosol deposition is designed, fabricated, simulated, and measured this study. It cantilever beam structure with tip proof mass PZT sensing layer. To figure out whether the design suitable for SHM, working bandwidth noise level are obtained via simulation. For first time, we use method to deposit thick film during fabrication process achieve...

Over the past years, there has been growing interests in field of power harvesting technologies for low-power electronic devices such as wireless sensor networks and biomedical applications. Methodologies using piezoelectricity to convert mechanical electric with a cantilever beam excited by external environmental vibration were widely discussed examined. Operating resonant mode was found be most efficient condition, but cases that frequencies are hardly matching frequency sources. The...

This paper presents analytical models for studying the transient behavior of several power harvesting circuit topologies use with piezoelectric bending transducers. Specifically, problem charging a large storage capacitor, which is inherently time-varying process, considered. Three designs are studied—direct charging, synchronized switching and discharging to capacitor through an inductor (SSDCI)—and they compared matched resistive load case. Analytical developed these cases predict rates...

This paper focuses on comparing the effects of varying degrees electromechanical coupling in piezoelectric power harvesting systems dynamics charging a storage capacitor. In order to gain an understanding behavior these dynamics, transducer whose vibrational are impacted very little by electrical energy extraction is compared that displays strong coupling. Both transducers cantilevered beams undergoing base excitation harvested used charge The transient coupled system studied detail with...

This paper presents the development of tactile sensors using sol-gel process to deposit a PZT thin-film from 250 nm 1 μm on flexible stainless steel substrate. The sensor can be used measure human pulses several areas, including carotid, brachial, finger, ankle, radial artery, and apical region. Flexible overcome diverse topology various regions sense corresponding signals bodies. measured arterial pulse waveform diagnose hypertension cardiac failure in patients. proposed have advantages,...

This paper presents the development of a bimorph microelectromechanical system (MEMS) generator for vibration energy harvesting. The is in cantilever beam structure formed by laminating two lead zirconate titanate thick-film layers on both sides stainless steel substrate. Aiming to scavenge efficiently from environment and transform into useful electrical energy, piezoelectric device can be poled serial parallel connections enhance output voltage or current respectively. In addition,...

In this paper, a series of the processes for fabricating lead-zirconate-titanate (PZT) micro-electro-mechanical-systems (MEMS) energy harvester based on silicon and stainless-steel substrates is presented. The aerosol deposition method was used to fabricate high-quality PZT layers MEMS harvesters in study. A special lift-off process patterning very thick film (5–10 µm) high-aspect ratio structures with almost vertical sidewalls at room temperature presented adopted here harvesters. To...

The rapid development of low-power consumption electronics and the possibility harvesting energy from environmental sources can make totally autonomous wireless devices. Using piezoelectric materials to convert mechanical into electrical for batteries devices in order extend lifetime is focus many researches recent years. It important efficient improve by designing an optimal interface between device load. In this paper, a self-powered proposed based on velocity control synchronized...

In this paper, a piezoelectric micro energy harvester (PMEH) fabricated on stainless-steel substrates is presented. Through the design and fabrication of PMEH, high-quality lead zirconate titanate (PZT) thick film was directly deposited substrate by aerosol deposition method at room temperature. After annealing, PZT can achieve excellent ferroelectric properties for high-efficiency PMEH Furthermore, in order to study impact air damping power generating efficiency transforming performance our...

Inkjet-printed microlens arrays (MLAs) were fabricated using hydrophilic confinement by UV/ozone treatment. The MLAs made from negative photoresist SU-8 (n = 1.63 at 530 nm). A film of 10 µm thick shadow mask was used to define UV/ozone-treated zones on an base layer. An inkjet print head jet drops onto these zones. After UV-curing, with diameters 150, 200, 400, 800 and 1000 successfully fabricated. Contact angles increased 22° (on layer without any surface treatment) 45.5°, 47.7°, 52.4°,...

Abstract This study highlights the latest advancements of ImmuMab® gene-edited mouse platform, engineered with human immunoglobulin germlines to facilitate efficient antibody therapeutic development across diverse formats, including canonical, heavy-chain-only (HCO), common-light-chain (CLC), or combinations thereof. Utilizing massive-fragment species in situ replacement technology, these mice underwent Mb-scale humanization gene fragments single-step operations, circumventing cumulative...

With the rapid development of low power consumption electronics, wireless sensor networks (WSN) are highly investigated and used to improve our life quality. Using piezoelectric materials transfer mechanical energy into electrical for batteries WSN in order extend time is focus many researches recent years. It important efficient harvesting by designing an optimal interface between device load. In this paper, a self-powered proposed based on velocity control synchronized switching technique...

This paper aims at proposing an electrical interface taking advantage of nonlinear treatment for both significantly increasing the voltage a piezoelectric device and extracting corresponding electrostatic energy in independent way from connected load. The principles proposed system lies quickly inverting on each extremum (synchronized switch inductor operations) given number occurrences, then total available element through so-called synchronous electric charge extraction (SECE) harvesting...

Abstract This study introduces a novel image capture and lighting techniques using cutting-edge hybrid MEMS scanner system designed for compact microscopic imaging. The comprises tapered optical fiber waveguide innovative aerosol-jet printed PZT (lead zirconate titanate) bimorph push-pull actuators on stainless-steel substrate, effectively addressing issues that are commonly associated with silicon substrates such as fracture layer separation. By leveraging nonlinear vibration, the achieves...

In this study, we present two configurations of piezo-actuated microspeakers, which were fabricated by combining a self-developed aerosol deposition method with the metal MEMS microfabrication process. The stainless steel used was structurally designed to enhance displacement amplitude speaker, is related its sound pressure level. packaged speakers measured using IEC 60318-4 standard. package around speaker contains printed circuit board dimensions in 20.0 mm × 13.0 3.0 mm. an enclosed field...

InGaAs/InP single-photon avalanche diodes (SPADs) attract increasing attention for the infrared light detection and ranging (LIDAR) due to low-cost compact-size construction. Although constant endeavor has been dedicated improve dead time timing jitter, it remains challenging implement high-speed high-resolution LIDAR. Here, we develop a high-performance GHz-gated APD operated in quasi-free-running mode, while its gating signal is unlocked from source. The used low-pass filtering technique...

The design thinking, implementation, and testing results of a newly developed Doppler interferometer is described. three built-in measuring modes including (1) single-beam mode for absolute vibration, (2) dual-beam differential (3) distance measuring, are all presented. To facilitate the application this advanced optical storage applications, circular polarization configuration was adopted to arrive at compact size enable adoption microscopic imaging system that can be used both as an...

In this work, deionized (DI) water dissociation was used to treat and change the contact angle of surface stainless steel substrates followed by spin coating P(VDF-TrFE) material for fabrication tactile sensors. The decreased 14° at −30 V treatment; thus, adhesion strength between thin film substrate increased 90%. Although negative voltage treatment, it is observed that crystallinity value declined 37% −60 V. addition, remanent polarization from 5.6 mC/cm2 4.61 treatment voltages −5 A...