Multi-deformable piezoelectric energy nano-generator with high conversion efficiency for subtle body movements

Electric Power Generated from Magnetic Nanofluid Droplets Sliding upon Superslippery Surfaces

“…The current value could exceed 6 μA, which surpasses current values generated by previous liquid-based generators ,,, based on the triboelectric principle. Moreover, the current is also higher than that of other triboelectric − and piezoelectric devices, − primarily due to the low internal resistance of the magnetoelectric devices in this study. When compared to previously prepared magnetoelectric devices, , our fabricated devices also demonstrate an advantage in terms of output current, as shown in Table .…”

Recent Progress on Structure Manipulation of Poly(vinylidene fluoride)‐Based Ferroelectric Polymers for Enhanced Piezoelectricity and Applications

“…Reproduced with permission. [ 249 ] Copyright 2022, Elsevier Ltd. b) Photographs of ultrathin (≈4.2 µm) piezoelectric sensor attached on top of the radial artery at distal antebrachium without/with wrinkling. Reproduced with permission.…”

“…Bae et al have developed an ultrathin piezoelectric nanogenerator (U-PENG) with a thickness of ≈4 μm using P(VDF-TrFE). [249] In contrast to traditional, thicker PENG that lacks the necessary flexibility to respond to minor movements, the U-PENG conforms to soft human skin and generates energy from subtle movements, such as breathing or blinking, as shown in Figure 12a. These innovative devices boast an energy conversion efficiency of roughly 18.8%, which is 971% higher than thicker samples with an identical structure.…”

A nanoscale surface engineered magneto-mechano-triboelectric nanogenerator enabled by reliable pattern replication for self-powered IoT devices

“…[9][10][11] In this regard, energy harvesting technology should be exploited for individual wireless sensors for the demonstration of self-powered, maintenance-free, sustainable, and IoT applications. 12 Various energy conversion mechanisms are utilized in energy harvesting piezoelectric, [12][13][14][15][16] thermoelectric, 17,18 photovoltaic, 19,20 triboelectric, [21][22][23][24][25][26][27][28] and magneto-mechano-electric (MME) conversion. [29][30][31][32] In particular, MME generators have received interest as an energy source of self-powered IoTs since they can harvest electric energy from wasted alternating current (AC) magnetic elds produced by power transmission cables that are present nearly everywhere in urban environments, such as in buildings, infrastructures, factories, and electronic devices.…”