A theoretical model for contact-mode TENGs was constructed in this paper. Based on the model, its real-time output characteristics and relationship between optimum resistance TENG parameters were derived. The theory presented here is first in-depth interpretation of TENG, which can serve as important guidance rational design structure specific applications.

The piezoelectric generation of perovskite BaTiO3 thin films on a flexible substrate has been applied to convert mechanical energy electrical for the first time. Ferroelectric were deposited by radio frequency magnetron sputtering Pt/Ti/SiO2/(100) Si and poled under an electric field 100 kV/cm. metal−insulator (BaTiO3)−metal-structured ribbons successfully transferred onto connected interdigitated electrodes. When periodically deformed bending stage, nanogenerator can generate output voltage...

The triboelectric nanogenerator (TENG) is a powerful approach toward new energy technology, especially for portable electronics. A theoretical model the sliding‐mode TENG presented in this work. finite element method was utilized to characterize distributions of electric potential, field, and charges on metal electrodes TENG. Based FEM calculation, semi‐analytical results from interpolation analytical V‐Q‐x relationship are built study equation validated through comparison with results....

A nanocomposite generator (NCG) is fabricated using piezoelectric BaTiO3 nanoparticles and universal graphitic carbons (carbon nanotubes reduced graphene oxide). produced by the simple process of dispersing carbon-based nanomaterials in a polydimethylsiloxane matrix subsequent spin-casting onto metal-coated plastic substrate. The NCG device generates an output voltage ∼3.2 V current ∼350 nA under periodic mechanical deformation to strain 0.33%. generated electric energy stored capacitors...

Pressure sensors should have an excellent sensitivity in the range of 0–20 kPa when applied wearable applications. Traditional pressure cannot achieve both a high and large working simultaneously, which results their limited applications fields. There is urgent need to develop sensor make breakthrough range. In this paper, graphene-paper that shows performance proposed. Compared most reported graphene sensors, work realizes optimization range, especially suitable for We also demonstrate can...

Single‐electrode triboelectric nanogenerators (SETENGs) significantly expand the application of in various circumstances, such as touch‐pad technologies. In this work, a theoretical model SETENGs is presented with in‐depth interpretation and analysis their working principle. Electrostatic shield effect from primary electrode main consideration design SETENGs. On basis analysis, impacts two important structural parameters, that is, gap distance area size, on output performance are...

Abstract Due to polarization of ions in crystals with noncentral symmetry, such as ZnO, GaN, and InN, a piezoelectric potential (piezopotential) is created the crystal when stress applied. Electronics fabricated using inner‐crystal piezopotential gate voltage tune or control charge transport behavior across metal/semiconductor interface p–n junction are called piezotronics. This different from basic design complimentary metal oxide semiconductor (CMOS) field‐effect transistors has...

Abstract Traditional sound sources and detectors are usually independent discrete in the human hearing range. To minimize device size integrate it with wearable electronics, there is an urgent requirement of realizing functional integration generating detecting a single device. Here we show intelligent laser-induced graphene artificial throat, which can not only generate but also detect More importantly, throat will significantly assist for disabled, because simple vibrations such as hum,...

The triboelectric effect is known for many centuries and it the cause of charging phenomena. However, has not been utilized energy harvesting until very recently. (1-5) Here we developed a new principle generator (TEG) based on fully contacted, sliding electrification process, which lays fundamentally mechanism designing universal, high-performance TEGs to harvest diverse forms mechanical in our daily life. Relative displacement between two surfaces opposite polarities generates...

As a vastly available energy source in our daily life, acoustic vibrations are usually taken as noise pollution with little use power source. In this work, we have developed triboelectrification-based thin-film nanogenerator for harvesting from ambient environment. Structured using polytetrafluoroethylene thin film and holey aluminum electrode under carefully designed straining conditions, the is capable of converting into electric via triboelectric transduction. With an sensitivity 9.54 V...

Harvesting energy from multiple sources available in our personal and daily environments is highly desirable, not only for powering electronics, but also future implantable sensor-transmitter devices biomedical healthcare applications. Here we present a hybrid scavenging device potential vivo The consists of piezoelectric poly(vinylidene fluoride) nanofiber nanogenerator harvesting mechanical energy, such as breathing or the beat heart, flexible enzymatic biofuel cell biochemical...

We have developed a simple, cost-effective, and scalable approach to fabricate piezoelectric nanogenerator (NG) with stretchable flexible characteristics using BaTiO3 nanotubes, which were synthesized by the hydrothermal method. The NG was fabricated making composite of nanotubes polymer poly(dimethylsiloxane) (PDMS). peak open-circuit voltage short-circuit current reached high level 5.5 V 350 nA (current density nA/cm(2)), respectively. It used directly drive commercial liquid crystal...

A newly designed triboelectric nanogenerator (TENG) is demonstrated based on a contact-separation process between an Al foil and finite size polyamide (PA) film. The working mechanism charge transfer the ground. 4×4 matrix of TENG array can be used for tracking motion by recording output voltages signals in real-time to form pressure map.

We demonstrate a new type of integrated nanogenerator based on arrays vertically aligned piezoelectric ZnO nanowires. The peak open-circuit voltage and short-circuit current reach record high level 58 V 134 μA, respectively, with maximum power density 0.78 W/cm(3). electric output was directly applied to sciatic nerve frog, inducing innervation the nerve. Vibrant contraction frog's gastrocnemius muscle is observed as result instantaneous input from nanogenerator.

In the past years, scientists have shown that development of a power suit is no longer dream by integrating piezoelectric nanogenerator (PENG) or triboelectric (TENG) with commercial carbon fiber cloth. However, there still design applying those two kinds NG together to collect mechanical energy more efficiently. this paper, we demonstrate fiber-based hybrid (FBHNG) composed TENG and PENG in environment. The FBHNG three-dimensional can harvest from all directions. positioned core covered as...

We demonstrate a cylindrical rotating triboelectric nanogenerator (TENG) based on sliding electrification for harvesting mechanical energy from rotational motion. The TENG is core–shell structure that made of distinctly different materials with alternative strip structures the surface. charge transfer strengthened formation polymer nanoparticles surfaces. During coaxial rotation, contact-induced and relative between contact surfaces core shell result in an "in-plane" lateral polarization,...

By combining contact-mode atomic force microscopy (AFM) and scanning Kevin probe (SKPM), we demonstrated an in situ method for quantitative characterization of the triboelectrification process at nanoscale. We systematically characterized triboelectric charge distribution, multifriction effect on transfer, as well subsequent diffusion dielectric surface: (i) SiO2 surface can be either positively or negatively charged through using Si-based AFM probes with without Pt coating, respectively;...

ZnO nanowire inorganic/organic hybrid ultraviolet (UV) light-emitting diodes (LEDs) have attracted considerable attention as they not only combine the high flexibility of polymers with structural and chemical stability inorganic nanostructures but also a higher light extraction efficiency than thin film structures. However, up to date, external quantum UV LED based on has been limited by lack efficient methods achieve balance between electron contributed current hole that reduces...

A branched ZnO-CdS double-shell NW array on the surface of a carbon fiber (CF/ZnO-CdS) was successfully synthesized via facile two-step hydrothermal method. Based single CF/ZnO-CdS wire polymer substrate, flexible photodetector fabricated, which exhibited ultrahigh photon responsivity under illuminations blue light (1.11 × 10(5) A/W, 8.99 10(-8) W/cm(2), 480 nm), green (3.83 10(4) 4.48 548 and UV (1.94 1.59 372 respectively. The this broadband sensor enhanced further by as much 60% when...

Contact electrification is about the charge transfer between surfaces of two materials in a contact-separation process. This effect has been widely utilized particle separation and energy harvesting, where preferred to be maximized. However, this always undesirable some areas such as electronic circuit systems due damage from accumulated electrostatic charges. Herein, we introduced an approach purposely manipulate contact process both polarity magnitude through applied electric field...