Listening to electrons talk
Peer-Reviewed Publication
Updates every hour. Last Updated: 7-Sep-2025 19:11 ET (7-Sep-2025 23:11 GMT/UTC)
Inspired by the suckerfishes-shark motion behavior, they designed and prepared a kind of NIR light-propelled micro@nanomotor with weak acid-triggered release of H2O2-driven nanomotor. By the coordinated bond interaction, a large amount of Janus Au-Pt nanomotors with hydrogen peroxide (H2O2)-driven capacity, analogous to suckerfishes, were attached onto immovable yolk-shell structured polydopamine-mesoporous silica (PDA-MS) micromotor as the host to create two-stage PDA-MS@Au-Pt micro@nanomotor. PDA-MS@Au-Pt micro@nanomotor moved directionally by self-thermophoresis under the propulsion of NIR light with low power density. When the PDA-MS@Au-Pt entered into the weak acidic environment formed by a low concentration of H2O2, most small Au-Pt nanomotors were detached from the surface of PDA-MS due to the weak acidic sensitivity of the coordinated bond, and then performed self-diffusiophoresis in the environment containing a low concentration of H2O2 as a chemical fuel.
Earthquakes create ripple effects in Earth's upper atmosphere that can disrupt satellite communications and navigation systems we rely on. Nagoya University scientists and their collaborators have used Japan's extensive network of Global Navigation Satellite System (GNSS) receivers to create the first 3D images of atmospheric disturbances caused by the 2024 Noto Peninsula Earthquake. Their results show sound wave disturbance patterns in unique 3D detail and provide new insights into how earthquakes generate these waves. The results were published in the journal Earth, Planets and Space.
Lead contamination in municipal water sources is a consistent threat to public health. Ingesting even tiny amounts of lead can harm the human brain and nervous system — especially in young children. To empower people to detect lead contamination in their own homes, a team of researchers developed an accessible, handheld water-testing system called the E-Tongue. This device, described in ACS Omega, was tested through a citizen science project across four Massachusetts towns.
Current regulations for nanomedicines overlook the effects of the different forms of the same element, such as ions, nanoparticles, and aggregates. In a recent study, Japanese researchers developed a new analytical method combining an asymmetric flow field-flow fractionation system and mass spectrometry to separately quantify these forms. This technique allows for better quality control and safety evaluation of metal-based nanomedicines, promoting their development and clinical use, with applications also extending to food, cosmetics, and the environment.