Nanotechnology

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MIT researchers examining a 3D holographic model of relaxor ferroelectric atomic structure visualized via multislice electron ptychography.
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MIT-led team uses multislice electron ptychography to map 3D structure of relaxor ferroelectrics

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MIT researchers and collaborators have directly characterized the three-dimensional atomic and polar structure of a relaxor ferroelectric using a technique called multislice electron ptychography, reporting that key polarization features are smaller than leading simulations predicted—results that could help refine models used to design future sensing, computing and energy devices.

Researchers at the University of South Florida have identified the mechanism that makes carbon black particles strengthen rubber, resolving a scientific puzzle that has lasted nearly a century. Their computer simulations reveal how the material resists stretching by effectively fighting against itself.

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Researchers at KAIST have directly observed how charge density waves form uneven, patchy patterns inside a quantum material during a phase transition. Using advanced 4D-STEM microscopy, the team mapped the strength and coherence of these electron patterns at nanoscale resolution. The findings reveal that electronic order persists in small pockets even above the transition temperature.

Researchers at The University of Osaka have developed ultra-small pores in silicon nitride membranes that approach the scale of natural ion channels. These structures enable repeatable opening and closing through voltage-controlled chemical reactions. The advance could aid DNA sequencing and neuromorphic computing.

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Researchers at Northwestern University have developed a more effective therapeutic vaccine for HPV-related cancers by rearranging components in a DNA-based nanoparticle. This structural adjustment significantly enhances the immune system's ability to target and destroy tumors. The findings, published in Science Advances, highlight the importance of molecular arrangement in vaccine design.

Scientists from Brazil and Portugal have created a magnetic nanocomposite that targets bone cancer cells while promoting bone regeneration. The material uses heat from a magnetic field to destroy tumors and a bioactive coating to aid healing. This innovation could enable less invasive therapies for bone tumors.

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Researchers from Ohio State University and Louisiana State University have pioneered a technique to observe ultrafast molecular interactions in liquids using high-harmonic spectroscopy. In a surprising experiment with fluorobenzene and methanol, they discovered a subtle hydrogen bond that suppresses light emission. This breakthrough, published in PNAS, opens new windows into liquid dynamics essential for chemistry and biology.

 

 

 

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