Magnet slime5/26/2023 ![]() The last part of the review summarizes the interesting applications of magnetic fluids such as heat transfer, sensors (temperature, pH, urea detection, cations, defect detection sensors), tunable optical filters, removal of dyes, dynamic seals, magnetic hyperthermia-based cancer therapy and other biomedical applications. The second part of the review highlights the applications of magnetic nanofluids and nanoemulsions (as model systems) in probing order-disorder transitions, scattering, diffraction, magnetically reconfigurable internal structures, molecular interaction, and weak forces between colloidal particles, conformational changes of macromolecules at interfaces and polymer–surfactant complexation at the oil-water interface. The first part of the review addresses the different types of magnetic fluids, the genesis of magnetic fluids, their synthesis methodologies, properties, and stabilization techniques are discussed in detail. This review also provides a summary of various applications, along with the key challenges and future research directions. Therefore, a critical review of this topic highlighting the necessary background, the potential of this material for emerging technologies, and the latest developments is warranted. Due to their stimuli-responsive behaviour, they have been finding more applications in biology and other engineering disciplines in recent years. ![]() Magnetic nanofluid, popularly known as ferrofluid, is a colloidal suspension of fine magnetic nanoparticles, has been at the forefront of research because of its magnetically tunable physicochemical properties and applications. In the initial phase, there has been a fervent scientific curiosity to understand the field-induced intriguing properties of such fluids but later a plethora of technological applications emerged. Among various new materials that emerged over the decades, magnetic fluids exhibiting interesting physiochemical properties (optical, thermal, magnetic, rheological, apparent density, etc.) under a magnetic stimulus have been at the forefront of research. Impelled by the need to find solutions to new challenges of modern technologies new materials with unique properties are being explored. With both empirical and theoretical contributions, this paper emphasises the importance of HCI in an era of machine consciousness, real, perceived or denied. These tensions can inform future research into perceptions of machine consciousness and the challenges it represents for HCI. Within participant responses we identified dynamic tensions between denial and speculation, thinking and feeling, interaction and experience, control and independence, and rigidity and spontaneity. We show that many people already perceive a degree of consciousness in GPT-3, a voice chat bot, and a robot vacuum cleaner. To address them, we surveyed 100 people, exploring their conceptualisations of consciousness and if and how they perceive consciousness in currently available interactive technologies. Assessing whether non-experts perceive technologies as conscious, and exploring the consequences of this perception, are yet unaddressed challenges in Human Computer Interaction (HCI). The prospect of machine consciousness cultivates controversy across media, academia, and industry. i) Simulation of controlled deformation behavior of magnetic slime. h) Experimental frames of the stretchable behavior of the magnetic slime. The simulation results demonstrate the magnetic field distribution in the plane 2 mm above the magnet. g) Programming complex shapes of the magnetic slime using ferromagnets in disk‐, hexagon‐, and ring‐shapes. ![]() f) Magnetic field dependence of the storage modulus G’ of magnetic slime with varying weight percentages of the NdFeB particles measured at 0.2% deformation and oscillation frequency of 6 rad s⁻¹. e) Frequency dependence of G’ and G” for non‐magnetic slime and magnetic slime, respectively, measured at a strain of 1.0%. d) Strain dependence of G’ and G” for non‐magnetic slime and magnetic slime, respectively, measured at ω = 10.0 Hz. c) SEM images of the freeze‐dried unmagnetized slime. Inset illustrates the crosslinking reaction between PVA and a tetrafunctional borate ion. a) Schematic diagram of the magnetic slime fabrication process. Synthesis process and deformability of magnetic slime.
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