Results 331 to 340 of about 4,573,752 (402)
Piezoresistive Effect: A New Concept for Hearing Aids
An MXene/PVA sound sensor utilizing piezoresistive effects has been proposed with a detection limit of 60 dB and a frequency response of 20–4000 Hz, which is comparable to the performance of commercial hearing aids. By combining the sensor with machine learning, the accuracy rate of voiceprint recognition of wildlife conservation can reach up to 99 ...
Mengyao Gao+8 more
wiley +1 more source
A simple to multiscale structure transition happens when a commercial porous foam is filled with multiwall carbon nanotubes with high aspect ratio. For an acoustic absorber with a porous material, the loading of multiwall carbon nanotubes can significantly improve its specific surface area while preserving its thickness and high porosity, thus enables ...
Jinkui Xiong+11 more
wiley +1 more source
Robust Stick‐and‐Play Photothermal Icephobic Film with Bioinspired Insulation Cells
Inspired by the seed‐and‐framework structure of lotus seedpods, a photothermal anti‐icing film is developed by embedding thermal‐management hydrophobic microcells (THMC) into PDMS. Combining photothermal/insulating synergy and hydrophobic microcells, it achieves heat accumulation, surface adhesion, and robust anti‐icing under weak light, enabling ...
Xiaohu Xia+5 more
wiley +1 more source
A triboelectric‐piezoresistive dual‐modal pressure sensor based on superelastic and ultrasoft MXene/cellulose nanofiber (CNF) aerogel@PDMS is fabricated. The sensor exhibits high sensitivity and stable sensing performance via a dual mechanism. Through the effective combination of these two mechanisms, comprehensive monitoring of complex stimuli can be ...
Ao Wang+9 more
wiley +1 more source
The frequent dust storms and charged dust particles on Mars pose significant challenges to the power generation efficiency and service life of solar panels during exploration missions. This paper proposes a novel wind‐driven ternary four‐phase soft‐soft contact triboelectric nanogenerator (FPS‐TENG) for dust removal.
Fei Yang+6 more
wiley +1 more source
Microenvironmental Modulation for Therapeutic Efficacy of Extracellular Vesicles
Recent studies highlighted the heterogeneity of EVs and the influence of microenvironmental signals on their therapeutic efficacy. This review offers a comprehensive overview of strategies and mechanisms to optimize the therapeutic efficacy of EVs through physical, biochemical, and mechanical modulation.
Bilu Xiang+4 more
wiley +1 more source
A bionic visual‐auditory perceptual system is proposed. The system exhibits remarkable multi‐modal sensory abilities to sound and light, enabling diverse functions including encrypted sound information transmission and information decoding. The perceptual system can also perform sound recognition, resulting in the implementation of a sound lock ...
Wei Sheng Wang+4 more
wiley +1 more source
Effectiveness of Sound Field Corrections for High-Frequency Pressure Comparison Calibration of MEMS Microphones. [PDF]
Saba F+5 more
europepmc +1 more source
Hygroscopic hydrogels are capable of utilizing the moisture from air, which can transfer the gaseous water to liquid by a surface phase transition. Taking advantage of this water, sustainable water production, thermal management, and electricity generation can be realized.
Yujie Du+5 more
wiley +1 more source