Advanced materials and processes for magnetically driven micro- and nano-machines for biomedical application

3D Motion Manipulation for Micro‐ and Nanomachines: Progress and Future Directions

“…[ 60 ] Therefore, it would be intriguing to design a micromachine capable of generating magnetic hyperthermia therapy and also moving by switching its motion with different magnetic inputs. This entails using high‐frequency alternating magnetic fields (hundreds of kilohertz) for inducing magnetic hyperthermia, [ 61 ] while static magnetic fields, low‐frequency oscillating magnetic fields (2–80 Hz), [ 62 ] low‐frequency rotating magnetic fields (0.5–130 Hz), [ 63 ] or their combinations induce 3D motion. [ 6c,43 ] This concept would be appealing in biomedical applications, especially in stimuli‐driven cancer therapeutics (Figure 7d), as suggested in a recent review.…”

Extraordinary microcarriers derived from spores and pollens

“…Recent studies have shown that microrobots also have potential applications in biomedical fields such as drug delivery, surgery, and cancer therapy. [97][98][99][100][101] Microrobots with self-propulsion capabilities can move autonomously under external control, sense the surrounding environment, deliver medicine, and perform micro-surgeries. Generally, self-propelled microrobots are driven by the following mechanisms: self-electrophoresis, bubbles propulsion, self-diffusion phoresis, and Marangoni effect.…”

Deterministic domain wall rotation in a strain mediated FeGaB/PMN-PT asymmetrical ring structure for manipulating trapped magnetic nanoparticles in a fluidic environment

“…Manipulation of magnetic nanoparticles (MNPs) [1][2][3] in a uidic environment with the precision in the limit of a single cell size is essential for location-specic analysis in various lab-on-achip applications. These applications include diverse functionalities in nanobiotechnology, 4,5 nanochemistry, 6,7 nanomedicine 5,8 etc. Although several techniques have been developed previously to manipulate MNPs at the nano-scale, one of the most successful attempts in this direction is reported by controlling the magnetic domain walls (DWs) in nanomagnetic structures, where highly localized magnetic energy density and its gradient can couple to the MNPs.…”