Selective and directional actuation of elastomer films using chained magnetic nanoparticles.
نویسندگان
چکیده
We report selective and directional actuation of elastomer films utilizing magnetic anisotropy introduced by chains of Fe3O4 magnetic nanoparticles (MNPs). Under uniform magnetic fields or field gradients, dipolar interactions between the MNPs favor magnetization along the chain direction and cause selective lifting. This mechanism is described using a simple model.
منابع مشابه
Nanoparticle-Liquid Crystalline Elastomer Composites
Liquid crystalline elastomers (LCEs) exhibit a number of remarkable physical effects, including a uniquely high-stroke reversible mechanical actuation triggered by external stimuli. Fundamentally, all such stimuli affect the degree of liquid crystalline order in the polymer chains cross-linked into an elastic network. Heat and the resulting thermal actuation act by promoting entropic disorder, ...
متن کاملSelf-Sensing, Ultralight, and Conductive 3D Graphene/Iron Oxide Aerogel Elastomer Deformable in a Magnetic Field.
Three-dimensional (3D) graphene aerogels (GA) show promise for applications in supercapacitors, electrode materials, gas sensors, and oil absorption due to their high porosity, mechanical strength, and electrical conductivity. However, the control, actuation, and response properties of graphene aerogels have not been well studied. In this paper, we synthesized 3D graphene aerogels decorated wit...
متن کاملSelective Removal of Lead (II) Ion from Wastewater Using Superparamagnetic Monodispersed Iron Oxide (Fe3O4) Nanoparticles as a Effective Adsorbent
This study investigated the applicability of polyethylene glycol (PEG-4000) coated Fe3O4 magnetic nanoparticles for the selective removal of toxic pb (II) ion from wastewater. The Fe3O4 magnetic nanoparticles of 24 nm were synthesized using a coprecipitation method and characterized by Scanning electron microscopy (SEM), vibratingsample magnetometer (VSM), and X-ray diffraction (XRD). SEM image...
متن کاملSynthesis of Sulfoxides in Water by New Magnetic Nanoparticles Supported Tungstic Acid (MNP-TA), as a Selective Oxidation Method of Sulfides
Different sulfides were oxidized to the corresponding sulfoxides, which is useful in drug industriesand important in biological activities, with a novel magnetically separable catalyst consisting oftungstic acid supported on silica coated magnetic nanoparticles in water as a green solvent in a goodto excellent yield without any over oxidation to sulfones in a simple, selective, and eco-friendly...
متن کاملSelective Magnetic Removal of Pb(II) from Aqueous Solution by Porphyrin Linked-Magnetic Nanoparticles
The discharge of lead containing effluents into the environment and water bodies is harmful for the human, animals, aquatic flora and fauna. Herein, a novel surface engineered magnetic nanoparticle for removing Pb2+ ions was studied. After surface modification of the magnetite by 3-amino-propyltriethoxysilane (APTES) magnetic nanoparticles with covalently linked porphyrins were synthesize...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Nanoscale
دوره 8 3 شماره
صفحات -
تاریخ انتشار 2016