scholarly journals Giving Penetrable Remote-Control Ability to Thermoresponsive Fibrous Composite Actuator with Fast Response Induced by Alternative Magnetic Field

Nanomaterials ◽  
2021 ◽  
Vol 12 (1) ◽  
pp. 53
Author(s):  
Li Liu ◽  
Wenjing Song ◽  
Shaohua Jiang ◽  
Gaigai Duan ◽  
Xiaohong Qin
Keyword(s):  
Magnetic Field ◽  
Remote Control ◽  
Fe3o4 Nanoparticles ◽  
Fibrous Composite ◽  
Fast Response ◽  
Ptfe Film ◽  
Composite Actuator ◽  
Alternative Magnetic Field ◽  
Loading Amount ◽  
Strength Result

An alternative magnetic field (AMF)-induced electrospun fibrous thermoresponsive composite actuator showing penetrable remote-control ability with fast response is shown here for the first time. The built-in heater of magnetothermal Fe3O4 nanoparticles in the actuator and the porous structure of the fibrous layer contribute to a fast actuation with a curvature of 0.4 mm−1 in 2 s. The higher loading amount of the Fe3O4 nanoparticles and higher magnetic field strength result in a faster actuation. Interestingly, the composite actuator showed a similar actuation even when it was covered by a piece of Polytetrafluoroethylene (PTFE) film, which shows a penetrable remote-control ability.

scholarly journals Magnetic Nanodiscs—A New Promising Tool for Microsurgery of Malignant Neoplasms

Nanomaterials ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 1459
Author(s):  
Tatiana N. Zamay ◽  
Vladimir S. Prokopenko ◽  
Sergey S. Zamay ◽  
Kirill A. Lukyanenko ◽  
Olga S. Kolovskaya ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Remote Control ◽  
Tumor Cells ◽  
Biological Effects ◽  
Malignant Neoplasms ◽  
Rotating Magnetic Fields ◽  
Magnetic Structures ◽  
Promising Tool

Magnetomechanical therapy is one of the most perspective directions in tumor microsurgery. According to the analysis of recent publications, it can be concluded that a nanoscalpel could become an instrument sufficient for cancer microsurgery. It should possess the following properties: (1) nano- or microsized; (2) affinity and specificity to the targets on tumor cells; (3) remote control. This nano- or microscalpel should include at least two components: (1) a physical nanostructure (particle, disc, plates) with the ability to transform the magnetic moment to mechanical torque; (2) a ligand—a molecule (antibody, aptamer, etc.) allowing the scalpel precisely target tumor cells. Literature analysis revealed that the most suitable nanoscalpel structures are anisotropic, magnetic micro- or nanodiscs with high-saturation magnetization and the absence of remanence, facilitating scalpel remote control via the magnetic field. Additionally, anisotropy enhances the transmigration of the discs to the tumor. To date, four types of magnetic microdiscs have been used for tumor destruction: synthetic antiferromagnetic P-SAF (perpendicular) and SAF (in-plane), vortex Py, and three-layer non-magnetic–ferromagnet–non-magnetic systems with flat quasi-dipole magnetic structures. In the current review, we discuss the biological effects of magnetic discs, the mechanisms of action, and the toxicity in alternating or rotating magnetic fields in vitro and in vivo. Based on the experimental data presented in the literature, we conclude that the targeted and remotely controlled magnetic field nanoscalpel is an effective and safe instrument for cancer therapy or theranostics.

Remote control of biofouling by heating PDMS/MnZn ferrite nanocomposites with an alternating magnetic field

2019 ◽  
Vol 94 (8) ◽  
pp. 2713-2720
Author(s):  
Ritwik Panigrahi ◽  
Hyun‐Suk Oh ◽  
Vinay Sharma ◽  
Kai Wei Kelvin Lee ◽  
Scott A Rice ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Remote Control ◽  
Alternating Magnetic Field ◽  
Mnzn Ferrite

Design of a remote-control drug delivery implantable chip for cancer local on demand therapy using ionic polymer metal composite actuator

2018 ◽  
Vol 86 ◽  
pp. 250-256 ◽  
Author(s):  
Matin Sadat Saneei Mousavi ◽  
Amir Hossein Karami ◽  
Mehrshad Ghasemnejad ◽  
Mohammadreza Kolahdouz ◽  
Faranak Manteghi ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Remote Control ◽  
Metal Composite ◽  
Ionic Polymer Metal Composite ◽  
Ionic Polymer ◽  
Control Drug ◽  
On Demand ◽  
Composite Actuator ◽  
Polymer Metal ◽  
Control Drug Delivery

Iron nanoparticles augmented chemodynamic effect by alternative magnetic field for wound disinfection and healing

2020 ◽  
Vol 324 ◽  
pp. 598-609
Author(s):  
Fei Gao ◽  
Xiaolian Li ◽  
Tingbin Zhang ◽  
Anujit Ghosal ◽  
Guifeng Zhang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Iron Nanoparticles ◽  
Alternative Magnetic Field

Development of Multi-Ferroic Actuator/Sensor Material and Device for Intelligent/Smart Technology - Basic Design and Experimental Verification

2008 ◽  
Vol 54 ◽  
pp. 187-194 ◽  
Author(s):  
Yasubumi Furuya ◽  
Teiko Okazaki
Keyword(s):  
Magnetic Field ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
High Speed ◽  
Large Scale ◽  
Coupling Effect ◽  
Active Material ◽  
Smart Technology ◽  
Internal Damage ◽  
Composite Actuator

Technical importance of multi-ferroic approach for designing advanced multi-functional actuator/sensors based on a mutual coupling effect between ferroic material elements is pointed out for intelligent/smart technology. Two types of multi-ferroic actuator/sensor devices. i.e. (1) magnetically driven composite actuator and (2) multi-functional surface acoustic wave (SAW) sensor by MEMS are presented. First, a large-scale robust composite actuator is the composite structure which is reinforced by the superelastic fiber or lamellar of shape memory alloys (TiNi) in the ferromagnetic metal (Ni) matrix. This multi-ferroic composite can be driven with high speed as well as considerably enhanced strain by applying a wireless magnetic field. Secondarily, multi-functionally designed, multi-ferroic senor device using surface acoustic wave (SAW) is introduced. On the surface part between IDTs, environmentally active material films such as SMA, FSMA, magnetostrictive alloy etc. are formed by magnetron-sputtering. Various environmental sensing parameters i.e. temperature, magnetic field strength, stress, loading hysteresis and internal damage etc. can be evaluated nondestructively from the signal analysis of amplitude and phase change of SAW. Consequently, these results show the promising new types of multi-functional composite actuator and sensor based on multi-ferroic effect.

Effect of alternative magnetic field on the recrystallization of Al-Zn-Mg-Cu alloy

2004 ◽  
Vol 39 (14) ◽  
pp. 4719-4720 ◽  
Author(s):  
X. T. Liu ◽  
J. Z. Cui ◽  
J. Zhang ◽  
X. M. Wu ◽  
Y. H. Guo
Keyword(s):  
Magnetic Field ◽  
Cu Alloy ◽  
Alternative Magnetic Field

Rapid hydrate-based methane storage promoted by bilayer surfactant-coated Fe3O4 nanoparticles under a magnetic field

Fuel ◽  
2021 ◽  
Vol 303 ◽  
pp. 121248
Author(s):  
Yongji Wu ◽  
Tianqi Tang ◽  
Lei Shi ◽  
Yurong He
Keyword(s):  
Magnetic Field ◽  
Fe3o4 Nanoparticles ◽  
Methane Storage
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