Tunable and flexible deep-ultraviolet bandpass filters based on micro- and nanoparticle/polydimethylsiloxane hybrid membranes
Tunable and flexible deep-ultraviolet bandpass filters based on micro- and nanoparticle/polydimethylsiloxane hybrid membranes
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基于微米和纳米粒子/聚二甲基硅氧烷杂化膜的可调谐和灵活的深紫外带通滤光片
DOI：
10.1016/j.optmat.2021.111073
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发表时间：
2021-05
影响因子：
3.9
通讯作者：
Oki Yuji
中科院分区：
文献类型：
--
作者：
Zhu Junfeng;Wan Lei;Zhao Chenxi;Sakai Ryo;Mikami Yuya;Feng Tianhua;Chen Cong;Liu Weiping;Yoshioka Hiroaki;Li Zhaohui;Oki Yuji
深紫外（DUV）带通滤光片在现代环境消毒杀菌领域中发挥着重要作用。提出了一种新型的低成本光散射材料，可用于制造柔性深紫外带通滤波器。综合考虑折射率匹配条件和Rayleigh-Gans-Debye（RGD）散射理论，氟化钙（CaF 2）掺杂的聚二甲基硅氧烷（PDMS）深紫外带通滤波器在峰值波长272.5 nm附近具有90%以上的透过率。应变测量导致相对稳定的峰值波长，拉伸比为12%。实验测得的温度响应为1.5 nm °C− 1。为了模拟该器件的深紫外滤光特性，基于Monte Carlo数值模拟，建立了一种改进的随机游走散射模型。为了验证器件的透射光谱的可调谐性，通过在原始PDMS基质中掺杂50体积%的低分子量PDMS获得10 nm的峰值波长蓝移，并且在掺杂1.4重量%的CdSe/ZnS胶体量子点（CQD）时观察到17 nm的红移。可调谐和灵活的深紫外带通滤波器的实现为环境净化设备和可穿戴光子器件的发展铺平了道路。
Deep-ultraviolet (DUV) bandpass filters play an important role in the fields of modern environmental disinfection and sterilization. A novel low-cost optical scattering material that can be used to manufacture flexible DUV bandpass filters is proposed. Considering both the refractive index matching condition and Rayleigh-Gans-Debye (RGD) scattering theory, the calcium fluoride (CaF2)-doped polydimethylsiloxane (PDMS) DUV bandpass filter shows over 90% transmittance near the peak wavelength of 272.5 nm. Strain measurements result in relatively stable peak wavelengths with stretching ratios of 12%. A temperature response of 1.5 nm °C−1is measured experimentally. To simulate the DUV light filtering characteristics of the device, an improved random walk scattering model is developed based on a Monte Carlo numerical simulation. To verify the tunability of the transmittance spectra of the devices, a 10 nm blueshift of the peak wavelength is obtained by doping 50 vol% low-molecular-weight PDMS in the original PDMS matrix, and a 17 nm redshift is observed upon doping 1.4 wt% CdSe/ZnS colloidal quantum dots (CQDs). The realization of tunable and flexible DUV bandpass filters paves the way towards the development of environmental purification equipment and wearable photonic devices.
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DOI：
10.3390/ma10040383
发表时间：
2017-04-04
期刊：
Materials (Basel, Switzerland)
影响因子：
--
作者：
Rajasekharan Unnithan R;Sun M;He X;Balaur E;Minovich A;Neshev DN;Skafidas E;Roberts A
通讯作者：
Roberts A
影响因子：
4.6
作者：
Kumar A;Boyer C;Nebhani L;Wong EHH
通讯作者：
Wong EHH
影响因子：
1.3
作者：
David C. Miller;M. Kempe;C. Kennedy;S. Kurtz
通讯作者：
David C. Miller;M. Kempe;C. Kennedy;S. Kurtz
影响因子：
11.4
作者：
Oyanedel-Craver, Vinka A.;Smith, James A.
通讯作者：
Smith, James A.
影响因子：
5.8
作者：
Vilhunen, Sari;Sarkka, Heikki;Sillanpaa, Mika
通讯作者：
Sillanpaa, Mika