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Thermally Tunable Acoustic Beam Splitter Based on Poly(vinyl alcohol) Poly(N-isopropylacrylamide) Hydrogel

التفاصيل البيبلوغرافية
العنوان: Thermally Tunable Acoustic Beam Splitter Based on Poly(vinyl alcohol) Poly(N-isopropylacrylamide) Hydrogel
المؤلفون: Yuqi Jin, Mi Zhou, Tae-Youl Choi, Arup Neogi
المصدر: Gels, Vol 7, Iss 3, p 140 (2021)
بيانات النشر: MDPI AG, 2021.
سنة النشر: 2021
المجموعة: LCC:Science
LCC:Chemistry
LCC:Inorganic chemistry
LCC:General. Including alchemy
مصطلحات موضوعية: hydrogel, beam splitting, thermal tunable, transparent acoustic impedance, Science, Chemistry, QD1-999, Inorganic chemistry, QD146-197, General. Including alchemy, QD1-65
الوصف: In this study, we demonstrated a thermally tunable acoustic beam splitter using a poly(vinyl alcohol) poly(N-isopropylacrylamide) hydrogel (PVA-pNIPAM). The nature of PVA-pNIPAM hydrogel offers exceptional temperature-dependent physical properties due to its phase transition around its lower critical solution temperature. The acoustic impedance of the hydrogel can be tuned below, above, or matched to that of water by changing the environmental temperature. An acoustic wave propagating in water can be split into transmitted and reflected components by the PVA-pNIPAM hydrogel slab on varying its angle of incidence. The intensity ratio between the reflected and the transmitted componence can be adjusted by tuning the temperature of the medium. The acoustic beam can be entirely reflected at a temperature corresponding to the matched impedance between hydrogel and water. The beam-splitting behavior was observed for acoustic waves from both a monochromatic wave and broadband pulse source. In addition, the phase of beam split pulses can be reversed by selecting the hydrogel’s operating temperature.
نوع الوثيقة: article
وصف الملف: electronic resource
اللغة: English
تدمد: 2310-2861
Relation: https://www.mdpi.com/2310-2861/7/3/140; https://doaj.org/toc/2310-2861
DOI: 10.3390/gels7030140
URL الوصول: https://doaj.org/article/1dff6915128143e8b6a66cb71dd6ccf9
رقم الأكسشن: edsdoj.1dff6915128143e8b6a66cb71dd6ccf9
قاعدة البيانات: Directory of Open Access Journals
الوصف
تدمد:23102861
DOI:10.3390/gels7030140