Holographic multiplexing has long relied on intrinsic optical degrees of freedom, limiting its further development. Researchers in China have now introduced the optical operator as a synthetic dimension, enabling operator-specific holograms that respond only to predefined transformation pathways. This approach boosts traditional orbital angular momentum (OAM) holography capacity by 9-fold experimentally and enhances security for optical encryption, opening a scalable paradigm for ultrahigh-dimensional information technologies.

Paper-based packaging is widely regarded as a sustainable alternative to petroleum-derived plastics, yet its poor resistance to water and oil has long limited real-world applications. In a recent study published in Journal of Bioresources and Bioproducts, researchers report a lignin nanoparticle–stabilized Pickering emulsion coating that simultaneously enhances barrier performance, mechanical strength, recyclability, and biodegradability of paper. By combining polyvinyl alcohol, stearic acid, and lignin nanoparticles into a single emulsion system, the coated paper achieves water and oil resistance comparable to plastic-coated paper while remaining fully degradable and easily recyclable. The work highlights the potential of biomass-derived nanomaterials to advance sustainable packaging technologies.

The increasing demand for efficient and sustainable energy storage has accelerated interest in biomass-derived carbon materials for supercapacitors. A newly published study in Journal of Bioresources and Bioproducts introduces a green synthesis strategy for lignin-based carbon aerogels that combines phytic acid–induced spherical structure formation with dual phosphorus and sulfur heteroatom doping. Using magnesium lignosulfonate and sodium alginate as renewable precursors, the researchers achieved uniform heteroatom distribution, optimized pore architecture, and enhanced electrochemical activity without relying on additional sulfur sources. The resulting carbon aerogels exhibit high specific capacitance, impressive energy density, and excellent cycling durability, highlighting their potential for next-generation sustainable energy storage devices.

Researchers revisited the long-neglected intrinsic fluctuations of spontaneous Brillouin scattering (SpBS), uncovering their physical mechanism and stochastic characteristics through comprehensive theoretical analysis and dedicated experimental validation. They developed a unified framework and verified that SpBS noise establishes a fundamental precision foundation in Brillouin metrology, exceeding the traditional shot-noise limit. The study offers new perspectives for optimizing the performance of current and future Brillouin-based technologies across a broad range of applications, such as imaging, microscopy, and sensing.

Professor Ying-Wei Yang's research group at Jilin University successfully constructed an azobenzene-modified metal-organic framework (MOF)-based nano-impeller platform using a dimensional engineering strategy. They synthesized two-dimensional layered Zn-Azo-MOF-1 and three-dimensional network Zn-Azo-MOF-2 with the same composition but different dimensions. They found that the photoisomerization efficiency of the two-dimensional framework (cis isomer content 33%) was an order of magnitude higher than that of the three-dimensional framework (3%). Mechanical grinding triggered interlayer slip in the two-dimensional structure, breaking the spatial confinement and activating efficient photoisomerization. Analysis of rotational energy barriers and framework-ligand interactions revealed the mechanism by which dimensionality and mechanical activation synergistically regulate the photo-switching dynamics. The constructed two-dimensional Zn-Azo-MOF-1 achieved 99% cargo release within 50 minutes under alternating UV-Vis irradiation, successfully extending the nano-impeller function from an amorphous platform to a crystalline platform, providing a dimensional engineering design principle for the programmable switching behavior of stimulus-responsive materials. The article was published as an open access Research Article in CCS Chemistry, the flagship journal of the Chinese Chemical Society.

No ears, no problem! The tobacco hornworm caterpillar, a common garden pest, can actually detect airborne sound via microscopic hairs on its body, according to a team of faculty and graduate students at Binghamton University, State University of New York. The research could have implications for improving microphone technology.