Results 51 to 60 of about 3,088,219 (346)
Physical and acoustic properties of petroleum and renewable based polyurethane foam filled with shorea leprosula [PDF]
, 2018 Physical and acoustic properties of petroleum-based polyurethane (PU) and renewable based polyurethane (RPU) foam composites filled with Shorea Leprosula (Red Meranti) fiber filler has been investigated.
Mohd Azahari, Muhammad Shafiq
core +1 more source
Sound Absorption by Acoustic Microlattice with Optimized Pore Configuration
, 2017 Sound absorption or dissipation principally involves joint interactions between sound waves, material morphology and the air medium. How these elements work most efficiently for sound absorption remains elusive to date.
Cai, Xiaobing +3 more
core +1 more source
Thermally Activated Delayed Fluorescence in Phase‐Separated Nanostructures
Advanced Functional Materials, EarlyView.A supramolecular, phase‐separation driven strategy yields charge transfer (CT) complexes from alternating electron‐deficient pyromellitic diimide and electron‐rich 4,5‐dibromoveratrole. The resulting CT complexes self‐assemble into lamellar nanosheets with nanometer‐sized domains that exhibit thermally activated delayed fluorescence (TADF) at room ...
Bart W.L. van den Bersselaar +8 more
wiley +1 more source
Nonlocal acoustic metasurface for ultrabroadband sound absorption
Physical review B, 2021 Classical meta-absorber designs usually have a tradeoff between bandwidth, efficiency, and thickness. Here, we introduce the concept of a nonlocal acoustic metasurface absorber by using a bridge structure connecting resonating unit cells to improve the ...
Yifan Zhu +5 more
semanticscholar +1 more source
Artificial Intelligence as the Next Visionary in Liquid Crystal Research
Advanced Functional Materials, EarlyView.The functions of AI in the research laboratory are becoming increasingly sophisticated, allowing the entire process of hypothesis formulation, material design, synthesis, experimental design, and reiterative testing to be automated. In our work, we conceive how the incorporation of AI in the laboratory environment will transform the role and ...
Mert O. Astam +2 more
wiley +1 more source
Sound Absorption Capability and Anatomical Features of Highly Sound Absorptive Wood
Journal of the Korean Wood Science and Technology, 2010 일본산 산공재 중 구조적 특징이 목재흡음에 적합하다고 사료되는 카기카즈라목재의 흡음성능과 구조적 특징을 관찰하고자 목재횡단방향으로 원반형시험편을 채취하여 구조적 특징을 관찰하고, 전달함수법으로 흡음율을 측정하였다. 측정주파수범위에서 카기카즈라 횡단면의 흡음율은 0.30에서 0.50의 수치를 나타내었다. 비교수종인 낙엽송시험편보다 2∼3배 높은 흡음율을 나타내었으며, 특히 2∼4 KHz의 주파수영역에서는 50% 전후로 높은 흡음율을 나타내었다. 카기카즈라목재의 횡단면에서는 다수의 커다란 도관이 존재하고 이들 도관요소들은 단일천공판으로 연결되어 다공질형흡음에 유용한 연속된 모세관이 다량 존재하는 사실을 확인할 수 있었다.
Chun-Won Kang, Wook Kang, Gwang-Chul Kim
openaire +2 more sources
Jurnal Rekayasa Kimia & Lingkungan, 2011 Panel of foam concrete wall is a type of membrane panel which has maximum sound absorption and can create quite and environmentally friendly room. The purpose of this study was to determine the magnitudeof the sound absorption value using the Sabine ...
Zulfian Zulfian +2 more
doaj +2 more sources
, 1998 An analogy between electromagnetism and acoustics is presented in 2D. The propagation of sound in presence of absorbing material is modeled using an open boundary microwave package.
Furstoss, M. +2 more
core +2 more sources
Advanced Functional Materials, EarlyView.Cuttlebone‐inspired metamaterials exploit a septum‐wall architecture to achieve excellent mechanical and functional properties. This review classifies existing designs into direct biomimetic, honeycomb‐type, and strut‐type architectures, summarizes governing design principles, and presents a decoupled design framework for interpreting multiphysical ...
Xinwei Li, Zhendong Li
wiley +1 more source
Multi‐Scale Interface Engineering of MXenes for Multifunctional Sensory Systems
Advanced Functional Materials, EarlyView.MXenes, as two‐dimensional transition metal carbides and nitrides, demonstrate remarkable capabilities for multifunctional sensing applications. This review systematically examines multi‐scale interface engineering approaches that enhance sensing performance, enable diverse detection functionalities, and improve system‐level compatibility in MXene ...
Jiaying Liao, Sin‐Yi Pang, Jianhua Hao
wiley +1 more source