High-Performance Acoustic Transducers with Exfoliated NbSe Nanosheets and Hybrid Force Mechanisms.

Materials (Basel)

Department of Mechanical Engineering, Soongsil University, 369 Sangdo-ro, Dongjak-Gu, Seoul 06978, Republic of Korea.

Published: February 2025


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Article Abstract

The transition metal dichalcogenide (TMDC) NbSe is a highly conductive and superconducting material with great potential for next-generation electronic and optoelectronic devices. However, its bulk form suffers from reduced charge density and conductivity due to interlayer van der Waals interactions. To address this, we exfoliated NbSe₂ into nanosheets using lithium-ion intercalation and utilized them as diaphragms in acoustic transducers. Conventional electromagnetic and electrostatic mechanisms have limitations in sound pressure level (SPL) performance at high and low frequencies, respectively. To overcome this, we developed a hybrid force mechanism combining the strengths of both approaches. The NbSe₂ nanosheets were successfully prepared and analyzed, and the NbSe-based hybrid acoustic transducer (N-HAT) demonstrated significantly improved SPL performance across a wide frequency range. This study offers a novel approach for designing high-performance acoustic devices by harnessing the unique properties of NbSe.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11857708PMC
http://dx.doi.org/10.3390/ma18040763DOI Listing

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