Powerful curved piezoelectric generator for wearable applications

Jung, Woo Hee; Lee, Min Jae; Kang, Min Gyu; Moon, Hi Gyu; Yoon, Seok Jin; Baek, Seung Hyub; Kang, Chong Yun

doi:10.1016/j.nanoen.2015.01.051

Cited by 179 publications

(86 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Piezoelectric materials generate electricity in response to a pressure signal; most common among them is the highperforming but brittle piezoelectric material lead zirconate titanate (PZT). [ 188 ] Flexible piezoelectric nanogenerators have recently been developed based on more fl exible forms of PZT such as thin ribbons [ 189 ] or nanowires, [ 190 ] as well as lead-free materials such as PVDF, [ 145,165,[191][192][193] ZnO nanowires, [ 194 ] and cellular polypropylene. [ 75 ] Triboelectric generators, on the other hand, generate electricity from the transfer of surface charge that occurs when certain materials, including many common metals and polymers, are brought into contact, [ 144 ] either by pressing and releasing [ 195 ] or sliding.…”

Section: Power Sourcesmentioning

confidence: 99%

Monitoring of Vital Signs with Flexible and Wearable Medical Devices

et al. 2016

View full text Add to dashboard Cite

Advances in wireless technologies, low-power electronics, the internet of things, and in the domain of connected health are driving innovations in wearable medical devices at a tremendous pace. Wearable sensor systems composed of flexible and stretchable materials have the potential to better interface to the human skin, whereas silicon-based electronics are extremely efficient in sensor data processing and transmission. Therefore, flexible and stretchable sensors combined with low-power silicon-based electronics are a viable and efficient approach for medical monitoring. Flexible medical devices designed for monitoring human vital signs, such as body temperature, heart rate, respiration rate, blood pressure, pulse oxygenation, and blood glucose have applications in both fitness monitoring and medical diagnostics. As a review of the latest development in flexible and wearable human vitals sensors, the essential components required for vitals sensors are outlined and discussed here, including the reported sensor systems, sensing mechanisms, sensor fabrication, power, and data processing requirements.

show abstract

Section: Power Sourcesmentioning

confidence: 99%

Monitoring of Vital Signs with Flexible and Wearable Medical Devices

et al. 2016

View full text Add to dashboard Cite

show abstract

“…A polyvinylidene fluoride (PVDF) film [12,14,[16][17][18], lead zirconate titanate (PZT) stack [13], and PZT bimorph [15,16,[19][20][21] have been used as piezoelectric materials for a wearable PEH. Table 2 lists recently reported wearable PEHs.…”

Section: Piezoelectric Energy Harvester (Peh)mentioning

confidence: 99%

“…In order to maximize the piezoelectric effect, it is necessary to install the PEH in a part of the human body that is subjected to a large compressive or tensile force. In many studies, PEHs were implemented in the shoe soles at the point where the foot applies the highest pressure in the human body [14][15][16][17][18][19]. In some cases, repetitively applied tensile force is converted into electrical energy by the COG motion of an inertial load [12,13].…”

Section: Piezoelectric Energy Harvester (Peh)mentioning

confidence: 99%

“…Table 2 lists recently reported wearable PEHs. Although PEHs have a low-power output, of mW-level, and poor efficiency in low-frequency regime [18], they have a small footprint in terms of volume and generates electricity even when the displacement is small. PZT is fragile and weak when subjected to shear force.…”

Section: Piezoelectric Energy Harvester (Peh)mentioning

confidence: 99%

“…Biomechanical power from human motion [7][8][9]. Energy harvesting principles for mechanical kinetic energy include piezoelectric [10][11][12][13][14][15][16][17][18][19][20][21], triboelectric [22][23][24][25][26][27][28][29][30][31], and electromagnetic energy harvesting [1,[32][33][34][35][36][37][38][39][40][41][42][43][44][45][46][47][48], as shown in Figure 1. Electromagnetic generators can be categorized into two types, namely inertial induction [32][33][34][35][36][37]…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Wearable Biomechanical Energy Harvesting Technologies

2017

View full text Add to dashboard Cite

Abstract:Energy harvesting has been attracting attention as a technology that is capable of replacing or supplementing a battery with the development of various mobile electronics. In environments where stable electrical supply is not possible, energy harvesting technology can guarantee an increased leisure and safety for human beings. Harvesting with several watts of power is essential for directly driving or efficiently charging mobile electronic devices such as laptops or cell phones. In this study, we reviewed energy harvesting technologies that harvest biomechanical energy from human motion such as foot strike, joint motion, and upper limb motion. They are classified based on the typical principle of kinetic energy harvesting: piezoelectric, triboelectric, and electromagnetic energy harvesting. We focused on the wearing position of high-power wearable biomechanical energy harvesters (WBEHs) generating watt-level power. In addition, the features and future trends of the watt-level WBEHs are discussed.

show abstract