Article
Chemistry, Multidisciplinary
Gabriela Toader, Aurel Diacon, Edina Rusen, Ionel I. Mangalagiu, Mioara Alexandru, Florina Lucica Zorila, Alexandra Mocanu, Adina Boldeiu, Ana Mihaela Gavrila, Bogdan Trica, Daniela Pulpea, Madalina Ioana Necolau, Marcel Istrate
Summary: This study presents the synthesis and characterization of alginate-based nanocomposite peelable films with remarkable antimicrobial properties. These films can be applied on contaminated surfaces to form a peelable film via divalent ion crosslinking, and can be easily peeled and disposed of. The incorporation of silver-decorated carbon nanofibers enhances the antimicrobial activity, resulting in high decontamination efficiency.
Article
Engineering, Manufacturing
Zhicheng Li, Yu Zhang, Xu Fan, Hao Wang, Hongzhen Xie, Peng Li, Weidong Chen, Jinjun Liu, Zhongbin Pan
Summary: In this research, high-quality nanocomposites were formed by in-situ synthesis of CsPbBr3 nanoparticles in ferroelectric polymers P(VDF-HFP). The introduction of only 0.1 wt% CPB resulted in a simultaneous enhancement of the dielectric constant and breakdown strength of the nanocomposites, leading to an ultrahigh energy density, high efficiency, and stability. This study provides a novel strategy for fabricating high-performance polymer-based composite capacitors by synthesizing perovskite-polymer dielectrics.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Article
Engineering, Mechanical
Ronald Barrett-Gonzalez, Nathan Wolf
Summary: This paper explores a class of actuators suitable for modern high speed, high performance subscale aircraft, focusing on the challenges micro aircraft face and the advantages of piezoceramic actuators in this environment. Through reverse-biased spring mechanisms, significant performance improvements and actuator envelopes can be achieved, with post-buckled precompressed (PBP) actuator arrangements showing the highest performance and low weight configurations.
Article
Nanoscience & Nanotechnology
Neslihan Torun, Ilker Torun, Menekse Sakir, Mustafa Kalay, M. Serdar Onses
Summary: There is a strong demand for encoded surfaces with multiple security layers that are prepared by stochastic processes and are adaptable to deterministic fabrication approaches. Dewetting instabilities in nanoscopic polymer films present a suitable platform for fabricating unclonable surfaces, with the thermal annealing-induced dewetting of P2VP enabling fabrication of randomly positioned functional features that are separated at a microscopic length scale. The patterning of P2VP films presents opportunities for fabricating hybrid security labels, which can be resolved through both stochastic and deterministic pathways, offering key opportunities in encoding applications.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Chemistry, Physical
Gissela Constante, Indra Apsite, Dennis Schoenfeld, Thorsten Pretsch, Leonid Ionov
Summary: In this study, the fabrication of light-sensitive high-aspect ratio surfaces with switchable topography is reported, which involves using melt-electrowriting of shape-memory polymers and deposition of light-to-heat converting black ink by dip coating. The surfaces can be locally deformed and recovered by water droplets due to the softening of the polymer upon illumination. The developed approach and materials are demonstrated to be suitable for the fabrication of smart light-controlled valves for the controlled mixing of fluids in microfluidic devices.
Article
Thermodynamics
Zirui Li, Zhenyu Wang, Wei Shao, Qun Cao, Zheng Cui
Summary: The nucleate boiling process on rectangular grooved surfaces with varying aspect ratio is studied through molecular dynamics simulation. The rectangular grooves can significantly accelerate the initial bubble nucleation time and delay the transition from bubble nucleation to film boiling. However, when the groove width is extremely narrow, bubbles cannot be generated first due to the limitation of geometric structure and low potential energy region inside the groove.
THERMAL SCIENCE AND ENGINEERING PROGRESS
(2023)
Article
Multidisciplinary Sciences
Andrew M. J. Edwards, Elfego Ruiz-Gutierrez, Michael Newton, Glen McHale, Gary G. Wells, Rodrigo Ledesma-Aguilar, Carl Brown
Summary: The passage discusses the stability problem of a slender liquid filament driven by surface tension, particularly focusing on how to control the wetting of a solid surface to achieve switching between different states. Dielectrophoresis forces can selectively polarize dipoles at the solid-liquid interface, changing the stability pathway selection of the liquid.
SCIENTIFIC REPORTS
(2021)
Article
Polymer Science
Saliha Mutlu, Eyup Metin, Sureyya Aydin Yuksel, Ugur Bayrak, Cigdem Nuhoglu, Nergis Arsu
Summary: The study found that nanoparticles are distributed differently in solution and in polymer matrices, and the atmosphere has an impact on the shape and size of the nanoparticles. Peroxy radicals are mainly responsible for the reduction of metal ions to form metal and metal oxide nanoparticles.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Polymer Science
Alexandra L. Nikolaeva, Alexander N. Bugrov, Maria P. Sokolova, Elena M. Ivan'kova, Ivan Abalov, Elena N. Vlasova, Iosif Gofman
Summary: By studying the fabrication and characterization of polyimide/metal oxide nanocomposite films, we have identified trends in the functional properties of these materials based on factors such as the type, size, concentration of the nanofiller, and the chemical structure of the matrix polyimide.
Article
Agricultural Engineering
Ewomazino Ojogbo, Joanna Jardin, Tizazu H. Mekonnen
Summary: This study investigated the use of cellulose nanocrystals and nanoclays as reinforcing fillers in starch ester films. The addition of nanofillers significantly improved the yield strength of the films, with enhancements of up to 112% for CNC and 173% for nanoclay. The films also showed improvements in light transmission and weight loss when compared to unfilled films.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Biochemistry & Molecular Biology
Sina Ardebilchi Marand, Hadi Almasi, Nima Ardebilchi Marand
Summary: This research aimed to fabricate active nanocomposite films by incorporating nickel oxide nanoparticles into chitosan-based films. Addition of 6% NiONPs enhanced the water barrier properties, tensile strength, thermal properties, and surface hydrophobicity of the films. The main features of these nanocomposite films are their photocatalytic activity and antibacterial activity.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2021)
Article
Materials Science, Multidisciplinary
Hang Hu, Dongsheng Li, Weijun Zhu
Summary: This paper presents a PDMS sponge-based piezoelectric material with a sandwich structure, which enhances its breakdown strength and stably captures charges using PTFE nanoparticles. The sandwich material exhibits excellent piezoelectric performance and stability.
Article
Multidisciplinary Sciences
N. C. Angastiniotis, S. Christopoulos, K. C. Petallidou, A. M. Efstathiou, A. Othonos, L. Koutsokeras
Summary: A bulk scale process has been implemented for the production of nanostructured film composites with metal oxide nanoparticles dispersed in a polymer matrix. The optical properties of the fabricated films can be regulated by adjusting the size and composition of the nanoparticles, as demonstrated by transmission and reflection measurements in the UV, VIS and IR ranges.
SCIENTIFIC REPORTS
(2021)
Article
Materials Science, Multidisciplinary
Giin-Shan Chen, Sheng-Kuei Chiu, Wei-Cheng Li, Wei Lee, Yiu-Hsiang Chang
Summary: This study proposes a self-assembled monolayer nickel-seeding process to immobilize Au nanoparticles onto WO3-containing mesoporous TiO2 films as superhydrophilic coatings for self-cleaning applications. The loaded Au NPs on the film significantly enhance the superhydrophilicity and photocatalytic activity, and the mechanism is attributed to the surface plasmon resonance effect.
Article
Chemistry, Applied
Ruchir Priyadarshi, Hyun-Ji Kim, Jong-Whan Rhim
Summary: Sulfur nanoparticles embedded in calcium cross-linked alginate films improved the tensile and water vapor barrier properties, as well as increased UV barrier properties and hydrophobicity of the films. The nanocomposite film exhibited antimicrobial activity, with bacteriostatic effects against E. coli and highly bactericidal effects against L. monocytogenes.
FOOD HYDROCOLLOIDS
(2021)
