An Ultra‐Simple Charge Supplementary Strategy for High Performance Rotary Triboelectric Nanogenerators

Abstract

The copper foil is taped to the side wall of a petri dish. Then warm LB agar liquid (10 g agar powder in 1 L medium, autoclaved) is poured into the dish and let consolidate to form agar plate. 50 µL of 1 × 10 6 CFU mL −1 S. aureus is added at the center of the agar plate and spread into a rectangular area with a cell spreader. The dish is moved under the plasma plume in a letter-writing route. Then the plates are incubated at 37 °C for 18 h after plasma treatment.

Smart Textile Triboelectric Nanogenerators: Prospective Strategies for Improving Electricity Output Performance

“…In general, the power needed to operate millions of wearable sensors is very small, typically at the microwatt to watt level. Although orderly energy supply modes can provide a part of the power for distributed electronic devices, the rest of the power must be provided by random energy sources in our living environment, including solar energy, vibration, motion, wind energy, and other resources [3][4][5][6][7][8][9]. What we expect is to make full use of any available resources in the environment where the device is deployed.…”

Metal Electrode Polarization in Triboelectric Nanogenerator Probed by Surface Charge Neutralization

“…Nowadays, new approaches such as the adoption of pumping generators for the continuous high dielectric charge, charge relocation and doubling during operation appear to overcome this dielectric breakdown problem [ 21 – 23 ]. The Wimshurst machine is a classical triboelectric charge generator operated by relocating induced charges through a metallic neutralization bar, resulting in high net charge collection efficiency without triboelectric contact motion [ 24 – 26 ].…”

Decoupling Contact and Rotary Triboelectrification vs Materials Property: Toward Understanding the Origin of Direct-Current Generation in TENG

“…In recent years, the evolution of technological advancements has demanded sustainable power sources for portable gadgets . Even though renewable energy harvesting systems (wind, solar, turbine, and thermoelectric) have evolved in the modern era, their high dependency on the environment hinders their wide application. , The mechanical energy harvesting (piezo-, tribo-, and hybrid) techniques scavenging electrical energy from waste biomotion attracts research interest as an alternative power solution for intelligent gadgets. , Triboelectric nanogenerators (TENGs) stand out among these energy harvesters (since their discovery in 2012) due to their versatile options in terms of materials, light weight, easy design, and long lifetime. − Even though TENGs show great potential for energy production, they cannot be used as a direct power source for electronic gadgets since most TENGs generate an alternating current (AC) signal, while intelligent gadgets work on direct-current (DC) signals. − However, this issue can be resolved using a bridge rectification/power management circuit, which unnecessarily increases the complexity and energy dissipation . In addition, the typical TENGs shows a high crest factor (peak value to root mean square) of ∼6.0 and a surface charge density limitation, implying an unbalanced output that will harm electronic goods.…”