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Shelter forests (or shelter‐belts), while crucial for climate regulation, lack monitoring systems, e.g., Internet of Things (IoT) devices, but their abundant wind energy can potentially power these devices using the trees as mounting points. To harness wind energy, an omnidirectional fluid‐induced vibration triboelectric nanogenerator (OFIV‐TENG) has been developed. The device is installed on shelter...
Tailoring nanoparticles’ composition and morphology is of particular interest for improving their performance for catalysis. A challenge of this approach is that the nanoparticles’ optimized initial structure often changes during use. Visualizing the three dimensional (3D) structural transformation in situ is therefore critical, but often prohibitively difficult experimentally. Although electron tomography...
The patient‐centered healthcare requires timely disease diagnosis and prognostic assessment, calling for individualized physiological monitoring. To assess the postoperative hemodynamic status of patients, implantable blood flow monitoring devices are highly expected to deliver real time, long‐term, sensitive, and reliable hemodynamic signals, which can accurately reflect multiple physiological conditions...
Tribovoltaic nanogenerators (TVNG) represent a fantastic opportunity for developing low‐frequency energy harvesting and self‐powered sensing, by exploiting their real‐time direct‐current (DC) output. Here, a thorough study of the effect of relative humidity (RH) on a TVNG consisting of 4H‐SiC (n‐type) and metallic copper foil (SM‐TVNG) is presented. The SM‐TVNG shows a remarkable sensitivity to RH...
Due to the simple installation and convenient maintenance, the floating water wave energy harvesting devices have significant economic advantages. Mass power density is the most important index to evaluate the advancement of floating wave energy harvesting devices. Herein, a self‐adaptive rotating triboelectric nanogenerator (SR‐TENG) with a compound pendulum and a functional gear‐set is provided...
In this paper, a quaternary dielectric soft‐contact rotary triboelectric nanogenerator (QDSR‐TENG) of low frictional resistance is fabricated for combining TENG with a shape memory alloy (SMA) engine. The introduction of rabbit fur brush and FEP brush results in charge pumps with a partially soft contact structure. Benefiting from the low friction loss of the structure, the QDSR‐TENG can operate stably...
Triboelectric nanogenerators (TENGs) have intrigued scientists for their potential to alleviate the energy shortage crisis and facilitate self‐powered sensors. Triboelectric interfaces containing triboelectric functionalized molecular groups and tunable surface charge densities are important for improving the electrical output capability of TENGs and the versatility of future electronics. In this...
Widely distributed across the environment, irregular micro‐nano mechanical high entropy energy (HEE) is a new promising recoverable energy, in which the development of matched harvesting technology is imperative to fit in with the requirements of booming sustainable energy in the new era. The triboelectric nanogenerator (TENG) is a very efficient technology for harvesting micro‐nano HEE, especially...
The most common size range of particulate matter (PM) in tobacco smoke is 1.0 to 5.0 microns; however, a high number of the most harmful PM is as small as 0.5 micron that is a serious threat to human health, and it is difficult to remove. There is an urgent need to develop a new purification technology for high‐efficiency removing tobacco smoke with easily construction and low cost. Here, a method...
Magnetic energy is an abundant and persistent form of energy radiating from various sources. Here, a hybrid triboelectric‐electromagnetic magnetic energy harvester (HMEH) system consisting of a modified pendulum unit is proposed, interacting mechanically with two multilayered TENGs and remotely with Cu coils. Systematic studies are conducted on magneto‐mechano‐energy conversion from power transmission...
As an emerging energy‐harvesting technology, the triboelectric nanogenerator (TENG) is considered a powerful driving force toward the new‐era of Internet of Things and artificial intelligence, but its output performance is dramatically influenced by environmental humidity. Herein, a direct current TENG (DC‐TENG) based on the triboelectrification effect and electrostatic breakdown is reported to address...
With the rapid development of human–machine interfaces, artificial acoustic sensors play an important role in the hearing impaired. Here, an ultrathin eardrum‐like triboelectric acoustic sensor (ETAS) is presented consisting of silver‐coated nanofibers, whose thickness is only 40 µm. The sensitivity and frequency response range of the ETAS are closely related to the geometric parameters. The ETAS...
Fish‐Wearable Data Snooping Platform
In article number 2107232, Xiangyu Chen and co‐workers report a fish‐wearable data snooping platform (FDSP) based on an air sac triboelectric nanogenerator, which is integrated with multiple functions of disinfection, mechanical energy harvesting, real‐time monitoring and wireless data transmission. The FDSP offers an alternative for studying fish kinematics and...
Conventional approaches to studying fish kinematics pose a great challenge for the real‐time monitoring of fish motion kinematics. Here, a multifunctional fish‐wearable data snooping platform (FDSP) for studying fish kinematics is demonstrated based on an air sac triboelectric nanogenerator (AS‐TENG) with antibacterial coating. The AS‐TENG not only can harvest energy from fish swimming but also serves...
Current photocatalytic semiconductors often have low catalytic performance due to limited light utilization and fast charge carrier recombination. Formation of Schottky junction between semiconductors and plasmonic metals can broaden the light absorption and facilitate the photon‐generated carriers separation. To further amplify the catalytic performance, herein, an asymmetric gold‐zinc oxide (Asy‐Au−ZnO)...
Large‐area flexible pressure sensors are of paramount importance for various future applications, such as electronic skin, human–machine interfacing, and health‐monitoring devices. Here, a self‐powered and large‐area integrated triboelectric sensor array (ITSA) based on coupling a triboelectric sensor array and an array chip of CD4066 through a traditional connection is reported. Enabled by a simple...
Developing nonprecious electrocatalysts with superior activity and durability for electrochemical water splitting is of great interest but challenging due to the large overpotential required above the thermodynamic standard potential of water splitting (1.23 V). Here, in situ growth of Fe2+‐doped layered double (Ni, Fe) hydroxide (NiFe(II,III)‐LDH) on nickel foam with well‐defined hexagonal morphology...
Extremely soft and thin electrodes with high skin conformability have potential applications in wearable devices for personal healthcare. Here, a submicrometer thick, highly robust, and conformable nanonetwork epidermal electrode (NEE) is reported. Electrospinning of polyamide nanofibers and electrospraying of silver nanowires are simultaneously performed to form a homogeneously convoluted network...
Wearable electrochemical biosensors for sweat analysis present a promising means for noninvasive biomarker monitoring. However, sweat‐based sensing still poses several challenges, including easy degradation of enzymes and biomaterials with repeated testing, limited detection range and sensitivity of enzyme‐based biosensors caused by oxygen deficiency in sweat, and poor shelf life of sensors using...
It is demonstrated that the redox reaction behaviors of Pd nanoparticles in HAuCl4 solutions can be substantially modified by the introduction of hexadecyl trimethyl ammonium bromide (CTAB) agents through systematic liquid cell transmission electron microscopy (LCTEM) investigations. The gradual dissolution of Pd nanoparticles is observed when HAuCl4 solution is pumped into liquid flow cells, the...
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