4 research outputs found
Advanced Nanoparticles in Medical Biosensors
El presente trabajo explora conceptos de logística inversa a través diversos
comportamientos, como resultante para la gestión y manejo de residuos sólidos en el sector
manufacturero primordialmente, rescatamos y analizamos experiencias, casos,
investigaciones o diseño de estrategias de empresas comprometidas con reducir la
generación de residuos y que la implementan actualmente o la van a implementar. La
investigación es de carácter exploratorio y cualitativo donde se trabaja con publicaciones
académicas y se realiza un análisis bibliométrico que permite la mejor clasificación de
artículos académicos según la base de datos, cantidad de publicaciones por país, cantidad
de publicaciones por año y estrategias principales que se usan en las empresas
manufactureras en todo el mundo.Trabajo de investigació
Visualizing Magnetic Structure in 3D Nanoscale Ni–Fe Gyroid Networks
Arrays of interacting 2D nanomagnets display unprecedented electromagnetic properties via collective effects, demonstrated in artificial spin ices and magnonic crystals. Progress toward 3D magnetic metamaterials is hampered by two challenges: fabricating 3D structures near intrinsic magnetic length scales (sub-100 nm) and visualizing their magnetic configurations. Here, we fabricate and measure nanoscale magnetic gyroids, periodic chiral networks comprising nanowire-like struts forming three-connected vertices. Via block copolymer templating, we produce Ni75Fe25 single-gyroid and double-gyroid (an inversion pair of single-gyroids) nanostructures with a 42 nm unit cell and 11 nm diameter struts, comparable to the exchange length in Ni–Fe. We visualize their magnetization distributions via off-axis electron holography with nanometer spatial resolution and interpret the patterns using finite-element micromagnetic simulations. Our results suggest an intricate, frustrated remanent state which is ferromagnetic but without a unique equilibrium configuration, opening new possibilities for collective phenomena in magnetism, including 3D magnonic crystals and unconventional computing
Visualizing Magnetic Structure in 3D Nanoscale Ni-Fe Gyroid Networks.
Arrays of interacting 2D nanomagnets display unprecedented electromagnetic properties via collective effects, demonstrated in artificial spin ices and magnonic crystals. Progress toward 3D magnetic metamaterials is hampered by two challenges: fabricating 3D structures near intrinsic magnetic length scales (sub-100 nm) and visualizing their magnetic configurations. Here, we fabricate and measure nanoscale magnetic gyroids, periodic chiral networks comprising nanowire-like struts forming three-connected vertices. Via block copolymer templating, we produce Ni75Fe25 single-gyroid and double-gyroid (an inversion pair of single-gyroids) nanostructures with a 42 nm unit cell and 11 nm diameter struts, comparable to the exchange length in Ni-Fe. We visualize their magnetization distributions via off-axis electron holography with nanometer spatial resolution and interpret the patterns using finite-element micromagnetic simulations. Our results suggest an intricate, frustrated remanent state which is ferromagnetic but without a unique equilibrium configuration, opening new possibilities for collective phenomena in magnetism, including 3D magnonic crystals and unconventional computing