Magnetic materials

Techniques capable of measuring adsorption processes in solution typically rely on indirect methods. Here, a magnetic sustentation technique is shown to rapidly and directly measure the mass of adsorbates in four paramagnetic metal–organic framework materials in solution.

Three decades of research in molecular nanomagnets have enabled the preparation of compounds displaying magnetic memory at liquid nitrogen temperature. Here, the authors provide an innovative framework for the design of molecular magnets based on data mining, and develop an interactive dashboard to visualize the dataset.

Ionic control of magnetism promises ultralow-field sensor, but current physical realizations of proton-based magneto-ionic sensor are limited due to the lack of effective solid-state sensing methods. Here, authors report magneto-ionics-based proton sensing under low working radiofrequency and magnetic fields.

A magnetic superhydrophobic tubular actuator for water transport has been designed and successfully demonstrated. Under the control of an externally applied magnetic field, the actuator could deform correspondingly and propel the water droplet in the tube to move forward with a high speed up to 16.1 cm/s, which is the highest velocity measured for water transport in a closed actuator system. Several representative liquids (i.e., phosphate buffer solution, artificial urine, and sweat) widely used in biomedical engineering have also been achieved to transport in the tubular actuator with negligible liquid loss under an applied magnetic field.

Multiscale ab initio simulations enable the accurate simulation of the spin dynamics of magnetic molecules. Together with machine learning, computer simulations will soon be able to assist the design of new compounds for spintronics and quantum technologies.