Remarks by David Chalmers in a memorial session for Daniel Dennett, at ASSC 27 (the 27th meeting of the Association for the Scientific Study of Consciousness) in Tokyo on July 3, 2024. Filmed by Van Royko and Marie-Philippe Gilbert for EyeSteelFilm.
“We discovered that the glass beads in the Chang’e-5 lunar soil can preserve iron particles of different sizes, from about 1 nanometer to 1 micrometer,” said Prof. Bai.
“It is generally difficult to distinguish npFe0 of different origins observed together in single samples. Here we used the rotation feature of the impact glass beads to clearly distinguish npFe0 formed before and after the solidification of the host glass beads.”
In this study, the scientists found numerous discrete large npFe0, tens of nanometers in size, which tended to concentrate towards the extremities of the glass beads. This concentration effect can cause ultralarge npFe0 to protrude from the extremities.
Researchers from the University of California, Berkeley have developed cutting-edge nanoscale optical imaging techniques to provide unprecedented insights into the ultrafast carrier dynamics in advanced materials. Two recent studies, published in Advanced Materials (“Transient Nanoscopy of Exciton Dynamics in 2D Transition Metal Dichalcogenides”) and ACS Photonics (“Near-Field Nanoimaging of Phases and Carrier Dynamics in Vanadium Dioxide Nanobeams”), showcase significant progress in understanding the carrier behaviors in two-dimensional and phase-change materials, with implications for next-generation electronic and optoelectronic devices.
The research team, led by Prof. Costas P. Grigoropoulos, Dr. Jingang Li, and graduate student Rundi Yang, employed a novel near-field transient nanoscopy technique to probe the behavior of materials at the nanoscale with both high spatial and temporal resolution. This approach overcomes the limitations of traditional optical methods, allowing researchers to directly visualize and analyze phenomena that were previously difficult to observe.
Schematic of the near-field transient nanoscopy. (Image: Adapted from DOI:10.1002/adma.202311568, CC BY-NC-ND 4.0)
NASA astronaut Donald Pettit took a photo of stars from the International Space Station in 2003. It’s no longer “possible” to take it now.
The ocean was discovered 430 miles deep into the Earth’s mantle, which was usually thought to be a hot rocky layer devoid of water.
The pulse of increased seismicity starting at around 10 a.m. Wednesday and another pulse starting at around 4 a.m. today. As of 8:45 a.m., Hawaiian Volcano Observatory officials reported the pulse was still ongoing.
According to Hawaiian Volcano Observatory, the seismicity and elevated ground deformation rates suggests magma may be slowly moving out of the summit storage region. Additional seismic pulses or swarms may occur with little or no warning and result in either continued intrusion of magma or eruption of lava.
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In a recent study published in Neuron, researchers discovered that microglia, the brain’s immune cells, use tunneling nanotubes…
Scheiblich et al. uncover a novel mechanism by which microglia use tunneling nanotubes to connect with α-syn-or tau-burdened neurons, enabling transfer of these proteins to microglia for clearance. Microglia donate mitochondria to restore neuronal health, shedding light on new therapeutic strategies for neurodegenerative diseases.
