Fig 1. Human mesenchymal stem cells were seeded on scaffolds functionalized with no peptides (grey), bone-promoting peptide (red), cartilage-promoting peptide (blue), both peptides spatially organized (blue/red; dual spatial), or both peptides mixed homogeneously (purple; dual mixed). Differentiation was only observed in dual-peptide scaffolds with dual spatial driving osteogenesis while dual mixed induced chondrogenesis.
Figure 1. Magnetic fields exert controllable forces that generate microscopic actuation and locomotion in hydrogels with ferromagnetic components The arrows in the figure represent the magnetization direction (same as the direction of Ni nanowires). The color bar on the right side represents the displacement of the robot from the initial configuration. (from Li, Chuang, et al. 49, 12 2020, Science Robotics, Vol. 5, p. eabb9822).
The Science Behind Respiratory Protection
Our unique manufacturing process injects a powerful electrostatic charge into an open formation material, improving the efficiency of particle trapping while allowing more air to pass through. This results in highly effective respirators—NIOSH-approved and FDA-cleared for fluid resistance.
Take a Closer Look at Trapping Airborne Particles
Illustration of how 3M’s electrostatically charged microfibers—magnified 10,000 times—attract and capture particles from the air.
Macromolecular engineering of PVDF