<br>仿生 Eu@HOF 光激活海绵作为超灵敏听觉和嗅觉传感器，用于次声波监测和双峰信息集成,Advanced Functional Materials

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仿生 Eu@HOF 光激活海绵作为超灵敏听觉和嗅觉传感器，用于次声波监测和双峰信息集成
Advanced Functional Materials ( IF 18.5 ) Pub Date : 2024-03-06 , DOI: 10.1002/adfm.202401395
Kai Zhu ₁ , Bing Yan ₁

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体感系统中多感官刺激的结合使人类能够了解物体的综合特征并做出精确的判断。然而，开发听觉-嗅觉双模柔性仿生传感器（FBS）来模仿外部刺激的生物感知功能仍然面临着复杂的挑战。在此，基于与三聚氰胺海绵集成的氢键有机框架（Eu@HOF-BPTC）制造了听觉-嗅觉双峰FBS（ 1和2 ）。在听觉感知过程中， 1可以监测最大响应频率为400 Hz的声音。听觉FBS具有超高灵敏度（41335.995 cps Pa ⁻¹ cm ⁻² ）、超高精度（相对标准偏差< 0.20%）、超快响应时间（20 ms）、超低检测限（1.1039 Hz和0.1083 dB）以及良好的可回收性（148个周期），还可以实时监测4-20 Hz范围内的次声波。基于人工智能， 2作为嗅觉胎牛血清表现出优异的灵敏度，具有ppm级的响应限和对四种气味分子的良好选择性，并实现了可穿戴式现场检测。 FBS还通过人机交互的方式完成听觉和嗅觉信号的集成和互操作。双模态听觉-嗅觉FBS在实现双模态交互、模拟复杂的生物神经系统、促进环境监测、灾害预警和医疗保健等方面具有广阔的应用前景。

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Biomimetic Eu@HOF Photoactivated Sponge as Ultrasensitive Auditory and Olfactory Sensor for Infrasound Wave Monitoring and Bimodal Information Integration

The combination of multisensory stimuli in the somatosensory system enables humans to understand object comprehensive characteristics and make precise judgments. However, the development of auditory–olfactory bimodal flexible biomimetic sensors (FBSs) to mimic the function of biological perception of external stimuli still presents complex challenges. Herein, an auditory–olfactory bimodal FBS (1 and 2) is fabricated based on hydrogen-bonded organic framework (Eu@HOF-BPTC) integrated with melamine sponge. During the auditory sensing process, 1 can monitor sound with a maximum response frequency of 400 Hz. The auditory FBS performs ultrahigh sensitivity (41335.995 cps Pa⁻¹ cm⁻²), ultrahigh precision (relative standard deviation < 0.20%), ultrafast response time (20 ms), ultralow detection limit (1.1039 Hz and 0.1083 dB), and great recyclability (148 cycles), which can also real-time monitor infrasound waves within 4–20 Hz. Based on artificial intelligence, 2 as an olfactory FBS demonstrates excellent sensitivity with a ppm-level response limit and desirable selectivity toward four odor molecules and realizes wearable on-site detection. The FBS also completes auditory and olfactory signals integration and interoperability by means of human–machine interaction. The bimodal auditory–olfactory FBS is highly promising for implementing bimodal interaction, simulating complex biological neural system, and promoting environmental monitoring, disaster warning and health care.

更新日期：2024-03-06

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