A Micromachined Coupled-Cantilever for Piezoelectric Energy Harvesters

Vyas, Agin; Staaf, Henrik; Rusu, Cristina; Ebefors, Thorbjörn; Liljeholm, Jessica; Smith, Anderson David; Lundgren, Per; Enoksson, Peter

doi:10.3390/mi9050252

Cited by 15 publications

(14 citation statements)

References 33 publications

(26 reference statements)

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“…To date, some harvesting PMs are being planned using cardiac motion, respiratory movement, and blood flow 68–70 . The major issue is related to the low amount of energy that can be extrapolated from these methods 71 . For these reasons, dedicated piezoelectric materials have been studying for both leads 68 and LLPM 71 in order to optimize the production of energy from these symbiotic devices.…”

Section: Introductionmentioning

confidence: 99%

“…The major issue is related to the low amount of energy that can be extrapolated from these methods 71 . For these reasons, dedicated piezoelectric materials have been studying for both leads 68 and LLPM 71 in order to optimize the production of energy from these symbiotic devices. For example, inspired by the biological symbiosis phenomenon that involves interaction between different organisms living in close physical association, such as nitrogen‐fixing bacteria with leguminous plants, an implanted symbiotic pacemaker (SPM) based on an implantable triboelectric nanogenerator (iTENG) was developed and tested on a large animal model, which successfully achieves cardiac pacing and sinus arrhythmia correction.…”

Section: Introductionmentioning

confidence: 99%

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Leadless pacemaker: State of the art and incoming developments to broaden indications

Curnis

Salghetti

Cerini

et al. 2020

Pacing Clinical Electrophis

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Theleadless pacemaker (LLPM) therapy has been developed in recent years to overcome the transvenous lead and device pocket‐related complications. The LLPMs now available are self‐contained right ventricular pacemakers and are limited to single‐chamber ventricular pacing modality. This literature review deals with the current status of LLPM technology and current areas of clinical applicability. The safety and efficacy outcomes published from randomized clinical trials and real world registries are analyzed and compared with historical conventional transvenous pacemaker data. Furthermore, new pacing modalities and future perspectives to broaden the clinical use and cover most of pacing indications are discussed. Due to the overall safe and effective profile in the short term and intermediate term, also in fragile patients, the LLPM use is constantly growing in daily clinical practice. Actually, it can be considered a landmark innovation, through which a new era of cardiac pacing has begun.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Leadless pacemaker: State of the art and incoming developments to broaden indications

Curnis

Salghetti

Cerini

et al. 2020

Pacing Clinical Electrophis

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“…Lead Zirconate Titanate (PZT), a type of artificial piezoceramic material, has a strong piezoelectric effect. With its dual sensing and actuating capacity and wide bandwidth [5,6,7], the PZT material has many engineering applications, such as in vibration sensing [8,9,10], vibration control [11,12,13], ultrasonic wave generation and sensing [14,15], energy harvesting [16,17,18], and structural health monitoring [19,20,21,22]. In addition, PZT material can be fabricated into different sizes and shapes.…”

Section: Introductionmentioning

confidence: 99%

A Novel PZT Pump with Built-in Compliant Structures

Bao

Zhang

Tang

et al. 2019

Sensors

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Different to the traditionally defined valved piezoelectric (PZT) pump and valveless PZT pump, two groups of PZT pumps with built-in compliant structures—with distances between the free ends of 0.2 mm (Group A) and 0 mm (Group B)—were designed, fabricated, and experimentally tested. This type of pump mainly contains a chamber 12 mm in diameter and 1.1 mm in height, a PZT vibrator, and two pairs of compliant structures arranged on the flowing channel. The flow-resistance differences between these two groups of PZT pumps were theoretically and experimentally verified. The relationships between the amplitude, applied voltage and frequency of the PZT vibrators were obtained experimentally, with results illustrating that the amplitude linearly and positively correlates with the voltage, while nonlinearly and negatively correlating to the frequency. The flow rate performance of these two groups was experimentally tested from 110–160 Vpp and 10–130 Hz. Results showed that the flow rate positively correlates to the voltage, and the optimum flow rate frequency centers around 90 Hz for Group A and 80 Hz for Group B, respectively. The flow rate performances of Group B were further measured from 60–100 Hz and 170–210 Vpp, and obtained optimal flow rates of 3.6 mL/min at 210 Vpp and 80 Hz when ignoring the siphon-caused backward flow rate. As the compliant structures are not prominently limited by the channel’s size, and the pump can be minimized by Micro-electromechanical Systems (MEMS) processing methods, it is a suitable candidate for microfluidic applications like closed-loop cooling systems and drug delivery systems.

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“…Energy recovery systems and energy harvesting systems are the subjects of growing interest [1,2,3,4,5]. In addition, the number of connected objects is constantly increasing [6], and the energy requirements of these systems are still growing and many sensors are manufactured without it being physically possible or economically viable to replace their batteries once they are depleted [5]. The development of energy recovery and energy harvesting systems makes it possible to increase the lifespan of these objects, which is important notably in devices placed in remote locations or harsh environments.…”

Section: Introductionmentioning

confidence: 99%

Design of the Squared Daisy: A Multi-Mode Energy Harvester, with Reduced Variability and a Non-Linear Frequency Response

Gratuze

Alameh

Nabki

2019

Sensors

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With the rise of the Internet of Things (IoT) and the ever-increasing number of integrated sensors, the question of powering these devices represents an additional challenge. The traditional approach is to use a battery; however, harvesting energy from the environment seems to be the most practical approach. To that end, the use of piezoelectric MEMS energy has been proven as a potential power source in a wide range of applications. In this work, a proof of concept for a new architecture for MEMS energy harvesters is presented. The influence of the dimensions and different characteristics of these designs is discussed. These designs have been proven to be resilient to process variation thanks to their unique architecture. This work presents the use of vibration enhancement petals in order to widen the bandwidth of the energy harvester and provide a non-linear frequency response. The use of these vibration enhancement petals has allowed the fabrication of three design variations, each using an area of 1700 µm by 1700 µm. These designs have an operating bandwidth between 3.9 kHz and 14.5 kHz and can be scaled to achieve other targeted resonant frequencies.

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A Micromachined Coupled-Cantilever for Piezoelectric Energy Harvesters

Cited by 15 publications

References 33 publications

Leadless pacemaker: State of the art and incoming developments to broaden indications

Leadless pacemaker: State of the art and incoming developments to broaden indications

A Novel PZT Pump with Built-in Compliant Structures

Design of the Squared Daisy: A Multi-Mode Energy Harvester, with Reduced Variability and a Non-Linear Frequency Response

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