Functional nanogenerators as vibration sensors enhanced by piezotronic effects

Zhang, Zheng; Liao, Qingliang; Yan, Xiaoqin; Wang, Zhong Lin; Wang, Wenduo; Sun, Xu; Lin, Pei; Huang, Yunhua; Zhang, Yue

doi:10.1007/s12274-013-0386-7

Cited by 56 publications

(40 citation statements)

References 32 publications

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“…[14][15][16][17] These devices can generate signals under certain environment physical or chemical signals changes, and then operate in a manner. [18][19][20][21][22] In general, they consist of numerous circuits or intricate layered matrix arrays, and are manufactured by complicated producing processes, which lead to an intensive energy consumption and limit their wide applications. By developing the highly effi cient, scalable and low-cost fabrication advantages of simple and low-cost character as well as quick and convenient fabrication.…”

Section: Introductionmentioning

confidence: 99%

Flexible and Highly Sensitive Strain Sensors Fabricated by Pencil Drawn for Wearable Monitor

Liao

Yan

et al. 2015

Adv Funct Materials

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466

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1wileyonlinelibrary.com schemes, the fl exible functional sensors are competitive and attractive candidates for promoting the advancement of sensing system. Recently, for the achievement of sensing devices, the printing technique has attracted widespread attention and been pursued to deposit various materials, like carbon materials, [ 13,23,24 ] polymers, [ 25,26 ] metals, [ 12,27 ] and semiconductors, [ 28,29 ] because the process is low energy consumption while maintaining the unique properties of the materials. By this way, the fl exible devices can be cheaper and easily produced.Graphite, one of carbon allotropes, has been increasing wide and keen interests of researchers, due to a wonder material of graphene. [ 9,[30][31][32] Pencil, a day-to-day material, is a nanocomposite of graphite and intercalated clay. [33][34][35] Being layered or pelleted, pencil lead can be exfoliated by using a gentle force. The drawing process can easily deposit graphite onto a rough paper, which contains massive amounts of cellulose fi bers and offer a naturally porous structure. [ 13,36 ] Pencil-trace drawn on printing papers is perhaps the simplest and easiest way of constructing graphite-based devices. The pen-on-paper (PoP) approach, a basic printing technique, offers a unique method to fabricate fl exible devices, such as strain sensors, [ 35 ] biosensors, [ 19,37 ] microfl uidic chips, [ 38 ] electronic devices, [ 34,39 ] photoconductive sensors, [ 29,40 ] and energy-storage devices. [ 33,41,42 ] Most of these devices have a response to force-induce changes in capacitance [ 33 ] and resistivity. [ 35 ] The microcontact-reversible sensing can effectively translate the microstructural deformations into electrical signals on active fl exible substrates. [ 6,9,43,44 ] As the potential to make fl exible, lightweight, portable, biocompatible, economical, and environment-friendly products, the PoP approach has an important role on the breakthroughs toward fl exible and wearable sensing devices.Herein, we demonstrate that the application of PoP approach can be expanded further to crucial fl exible sensing devices. We evaluated the repeatability of bending-unbending and the robustness of the strain sensors applied by loading. The strain sensors have a rapid respond to microdeformation changes and can be used to monitor various structural change and even human motion through facilitative and effective installing designs. Typically, the microdeformation of <0.13% strain can be detected. Compared with the recently reported fl exible sensing devices, the strain sensors behave signifi cant Flexible and Highly Sensitive Strain Sensors Fabricated by Pencil Drawn for Wearable MonitorXinqin Liao , Qingliang Liao , Xiaoqin Yan , Qijie Liang , Haonan Si , Minghua Li , Hualin Wu , Shiyao Cao , and Yue Zhang * Functional electrical devices have promising potentials in structural health monitoring system, human-friendly wearable interactive system, smart robotics, and even future multifunctional intelligent room. Here, a low-cost fabrication s...

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Section: Introductionmentioning

confidence: 99%

Flexible and Highly Sensitive Strain Sensors Fabricated by Pencil Drawn for Wearable Monitor

Liao

Yan

et al. 2015

Adv Funct Materials

Self Cite

466

361

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“…The first piezoelectric nanogenerator (NG) based on zinc oxide nanowires for mechanical to electrical energy conversion was proposed by Wang and Song (2006). It started with promising investigations on such devices, for example, to harvest vibrations (Chen et al 2010(Chen et al , 2013Poulin-Vittrant et al 2015;Zhan et al 2014), human body motion (Lee et al 2014;Yang et al 2009), wind (Gao et al 2015), acoustic waves (Wang et al 2007), and other mechanical energy forms (Wang 2012). Piezoelectric generators are also used as passive or self-powered sensors (Chen et al 2013;Fan et al 2012;Fang et al 2015;Hua and Wang 2015).…”

Section: Introductionmentioning

confidence: 99%

Novel piezoelectric paper based on SbSI nanowires

et al. 2017

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A novel piezoelectric paper based on antimony sulfoiodide (SbSI) nanowires is reported. The composite of tough sonochemically produced SbSI nanowires (with lateral dimensions 10-100 nm and length up to several micrometers) with very flexible cellulose leads to applicable, elastic material suitable to use in fabrication of, for example, piezoelectric nanogenerators. For mechanical energy harvesting, cellulose/SbSI nanocomposite may be used. Due to its high values of electromechanical coefficient (k 33 = 0.9) and piezoelectric coefficient (d 33 = 1 9 10 -9 C/N), SbSI is a very attractive material for such devices. The preliminary investigations of a simple cellulose/SbSI nanogenerator for shock pressure (p = 3 MPa) and sound excitation (f = 175 Hz, L p = 90 dB) allowed to determine its open circuit voltage 2.5 V and 24 mV, respectively. For a load resistance equal to source impedance (Z S = 2.90(11) MX), maximum output power density (P L = 41.5 nW/cm 3 for 0.05-mm-thick sheet of this composite) of the cellulose/SbSI nanogenerator was observed. Cellulose/SbSI piezoelectric paper may also be useful to construct gas nanosensors and actuators.

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“…Recently, a large area of NWAs/NRAs was integrated into devices to obtain a large current value. 7,33 Nevertheless, the switch ratio (SR) is only ∼100 at 3 V. 33 It is worth mentioning that a 10 4 −10 7 scales SR of field-effect transistors or ultraviolet (UV) detectors is achieved by inserting insulating materials, due to the mechanism of electrons trap-assisted tunneling. 34−37 These insulating materials also promoted the characteristics of nanogenerators and spintronic devices.…”

Section: ■ Introductionmentioning

confidence: 99%

Enhanced Performance of ZnO Piezotronic Pressure Sensor through Electron-Tunneling Modulation of MgO Nanolayer

Liao

Yan

Lin

et al. 2015

ACS Appl. Mater. Interfaces

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Piezoelectric materials can be applied into electromechanical conversion and attract extensive attention with potential applications in various sensors. Here, we present two types of piezotronic pressure sensors based on ZnO nanoarrays. By introducing an insulating MgO (i-MgO) nanolayer, the "on/off" current ratio of the sensor is significantly improved up to 10(5). Furthermore, the sensor shows a high sensitivity of 7.1 × 10(4) gf(-1), a fast response time of 128 ms. The excellent properties are attributed to the combination of piezoelectric effect of ZnO nanoarrays and electron-tunneling modulation of MgO nanolayer, and the reversible potential barrier height controlled by piezoelectric potential. We further investigate the service behavior of the sensor, which can detect force varying from 3.2 to 27.2 gf. Our research provides a promising approach to boost the performance of nanodevices.

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Functional nanogenerators as vibration sensors enhanced by piezotronic effects

Cited by 56 publications

References 32 publications

Flexible and Highly Sensitive Strain Sensors Fabricated by Pencil Drawn for Wearable Monitor

Flexible and Highly Sensitive Strain Sensors Fabricated by Pencil Drawn for Wearable Monitor

Novel piezoelectric paper based on SbSI nanowires

Enhanced Performance of ZnO Piezotronic Pressure Sensor through Electron-Tunneling Modulation of MgO Nanolayer

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