Chromatic refinement filtration of F8BT shell on copper doped zinc sulphide for high resolution mechanoluminescence haptic sensor
발표자
김남우 (한양대학교)
연구책임자
최효성 (한양대학교)
초록
내용
Mechanoluminescence materials have emerged as promising candidate for haptic interface sensors due to their mechanically driven luminescence property. However, the inherently broad emission spectra of most mechanoluminescence materials hinder sharp signal generation and high spectral resolution. Here, we suggest a chromatic filtration strategy employing a poly(9,9-dioctylfluorene-alt-benzothiadiazole) (F8BT) polymer shell on copper-doped zinc sulphide (ZnS:Cu) to achieve highly refined and intensified ML signal. By selectively suppressing spectral components below 490 nm, the F8BT shell effectively narrows the emission bandwidth, yielding a full width at half maximum (FWHM) of 55 nm during the ML behaviour. In particular, F8BT shell efficiently mitigates signal intensity loss, which can be ascribed to the colour filtration ability, through mechanoluminescence-induced photoluminescence performance. This dual functionality significantly reduces spectral noise in the blue region with high intensity, enhancing the resolution in actual ML-based haptic controllers. Our approach establishes a scalable framework for high-resolution ML platforms, providing a versatile pathway toward next-generation stress-sensing applications with unprecedented spectral precision and optical fidelity.