New papers on Nanomaterials
35 new papers on nanomaterials in the last 7 days, within Chemistry & materials. These are the 35 Pipette rates most worth reading, with the main result in the authors' own words.
The best of the week
Electrical signal transmission across electrolyte junctions separated by atomically-thin graphene
Here we show that atomically thin graphene crystals, although impermeable to any ions or molecules, can transmit interfacial electrical potentials across electrolyte junctions without significant disruption.
Peer-reviewed journalClaims a big stepReal-world useOrganic two-dimensional van der Waals heterostructures
Here we introduce a bottom-up strategy for programmable lattice engineering in organic van der Waals heterostructures of 2D polymers.
Peer-reviewed journalClaims a big stepReversible photolithography of quantum dots achieves high-performance electroluminescence
Using this approach, we achieve high-efficient and high-fidelity QD photolithography with restored QD structure and functionality.
Peer-reviewed journalBold claims, read criticallyClaims a big stepReal-world useMolecular Programming of Steric Tags for Controlled Nanopore Translocation toward Precision Clinical Diagnostic Assistance
Here, we report a chemically intuitive molecular programming strategy─steric blockage-enabled slow translocation (SLOW-Trans)─that overcomes this physical limitation through the rational design of sterically demanding probe molecules.
Peer-reviewed journalReal-world useNTBuilder: Commensurate Construction of Nanotubes from Arbitrary Two-Dimensional Crystals and a Catalog of 20 Million Structures
Here, we develop a general theory of the rolling construction for arbitrary 2D crystals and implement it in \ntbuilder{} (NanoTube Builder), an open-source library with desktop and web interfaces.
PreprintClaims a big stepStress-engineered 0.34 nm graphene memristors for low-power probabilistic computing
Here, the authors report a stress engineering method to fabricate graphene-edge memristors with a geometrically defined 0.34 × 0.34 nm2 crossed-electrode area, showing volatile characteristics and their application for low-power probabilistic computing.
Peer-reviewed journalBold claims, read criticallyClaims a big stepReal-world usePhotoresist-Free Lithography via Light-Induced Redox Patterning of Oxide Thin Films
Here we demonstrate a photoresist-free patterning method based on light-induced redox transformations in (Ni0.4Co0.6)3O3 (x = 1) thin films.
PreprintReal-world useThree-dimensional atom-by-atom measurement of interface diffusion dynamics
Together, these measurements establish a 3D atom-by-atom framework that connects identity-corrected mobility to species-, layer- and facet-resolved transport at buried nanointerfaces.
PreprintLow-Voltage Electrophoretic Deposition in Water with Metal–Organic Framework Nanoparticles
Here, we demonstrate that intrinsic surface charge density of size-controlled metal–organic framework (MOF) nanoparticles, together with particle size and solvent properties, governs electrophoretic mobility and enables high-quality EPD in aqueous media at 1 V, well below the threshold for water electrolysis.
Peer-reviewed journalBold claims, read criticallyReal-world useSequence-encoded hexagonal lattices in multichannel peptide nanofibrils
These findings establish that a minimal, sequence-encoded interaction hierarchy can programme long-range supramolecular order, providing a general framework for how short peptides can encode complex, symmetry-defined architectures 4–12 .
Peer-reviewed journalSelf-Catalyzed Transesterification Transforms Ionizable Amphiphilic Janus Dendrimers into Multicomponent Vectors and Generates Complex Design Strategies for mRNA Delivery
Here we report that, unexpectedly, the least stable benzyl-ester-based IAJDs, which contain the 1-(2-hydroxyethyl)piperazine ionizable amine (IA), undergo an extraordinarily slow, self-catalyzed transesterification at room temperature that transforms the one-component system into a multicomponent one.
Peer-reviewed journalReal-world useTwo-Dimensional Orthorhombic Molybdenum Boride Enabled by Selective Mo–Al Bond Cleavage in MoAlB
Herein, we present a liquid-metal-mediated selective bond-breaking strategy that enables orthorhombic 2D MoB nanosheets from non-van der Waals MoAlB precursor.
Peer-reviewed journalReal-world useDynamic Metal–Organic Tweezer Enables High-Resolution Nanopore Analysis of Steroid Hormones
Herein, we develop a type of dynamic and pincer-like supramolecular host, metal–organic tweezers (MOTs), providing an adaptable host-assisted platform to improve molecular resolution in nanopore analysis.
Peer-reviewed journalReal-world useTunable nanofluidic ion gating via in situ salt precipitation-dissolution
Here, we present a nanofluidic device that enabled ionic gating through pervaporation-driven precipitation and rehydration-driven dissolution (PP&RD) of salt solutions within a nanochannel.
Peer-reviewed journalBold claims, read criticallyUltrafast Dissipative Localization of Electronic Energy in AuPt Superlattices
Here, we show that a metallic AuPt superlattice concentrates electronic energy in Pt within a few hundred femtoseconds, regardless of the initial energy distribution between the two constituents.
PreprintExpandable and scalable production of cellulose nanofibrils via highly efficient swelling-modification in deep eutectic solvent
Here, we develop a highly efficient swelling-modification strategy using a hydrated deep eutectic solvent (Zn(OAc)2/ChCl/H2O) to enable efficient CNF production and programmable chemical modification.
Peer-reviewed journalBold claims, read criticallyHighly Lattice-Mismatched Selective Area Epitaxy and Coalescence of PbSe Nanostructures on GaAs
In this work, we achieve site-selective growth of well-faceted and ordered PbSe nanostructures, despite a large 8% lattice mismatch.
PreprintBold claims, read criticallyRational Design of Low-Dimensional Hybrid Organic/Inorganic Interfaces for Enhanced Second-Harmonic Generation
By establishing that functionalization topology, dynamic spatial orientation, and substrate point-group symmetry constitute a single, non-separable parameter space, this work provides a systematic blueprint for the rational assembly, predictive discovery, and non-invasive characterization of next-generation low-dimensional hybrid materials for nonlinear optoelectronics.
PreprintLigand-Mediated Control of Zn x Se y Intermediates for Defect-Free ZnSe Heteroepitaxy on Quantum Dots
Herein, we demonstrate that rational manipulation of ZnxSey intermediates via free oleic acid (OA) effectively suppresses both VZn and morphological inhomogeneity in CdSe/ZnSe core/shell QDs.
Peer-reviewed journal5DSTEM of Liquid-Phase Nanocrystal Growth Bridges Ensemble Kinetics and Nanoscale Dynamics
By connecting ensemble kinetics with particle- and grain-resolved structural evolution, 5DSTEM provides a general framework for uncovering heterogeneous growth mechanisms and for relating synthesis pathways to structure-dependent properties in functional nanomaterials.
PreprintRedox-Regulated Nonvolatility Switching in Single-Nanopipette Memory Diodes
Reversible volatile and nonvolatile rectified memory effects are controlled by low electric potentials: redox-regulated conductivity state changes drive long-term memory and potential sweeping or pulse trains stimulate short-term ionic memory effects.
Peer-reviewed journalBold claims, read criticallyLigand-Shell Softness Directs Symmetry Transitions in Nanotripod Superstructures
These results establish ligand shell softness as a tunable design parameter for coupling nonconvex particle geometry to long-range order, enabling porous and chiral nanocrystal superstructures beyond dense, high-symmetry packing.
Peer-reviewed journalThe Critical Role of Itinerant Contributions to Orbital Angular Momentum Relaxation and Dynamics
These results demonstrate that going beyond atom-centered models is essential for describing orbital relaxation and diffusion.
PreprintLong-Lived Polarization Memory from Piezoelectric Electron-Acoustic Phonon Coupling in Symmetric Spherical-like Cesium Lead Bromide Nanocrystals
We demonstrate that polarization anisotropy in an ensemble of photoexcited perovskite nanocrystals arises from transition dipole moment asymmetry inherent to the orthorhombic structure.
Peer-reviewed journalSubnanometer thermodynamic overlayers on bimetallic nanoparticles
Here, we report that bimetallic nanoparticles can form a thermodynamically controlled "shell-dimer" architecture in which one metal forms an overlayer only a few atomic layers thick on another.
PreprintBlue-Emitting Colloidal In1– x Ga x P Quantum Dots Synthesized in Molten Salt: Toward Blue QLEDs with Improved Stability
Here, we report the synthesis, computational modeling, and structural and spectroscopic studies of heavy metal-free blue-emitting core-shell QDs featuring 2.1 nm In1-xGaxP cores, colloidally synthesized in a molten inorganic salt, epitaxially coated with ZnS shells, and optimized surface treatments.
Peer-reviewed journalReal-world usePolymer-free Assembly of Unencapsulated van der Waals Heterostructure Devices
Here, we demonstrate muscovite mica as a polymer-free platform for assembling and patterning vdW heterostructure devices.
PreprintNanoscale SrIrO Freestanding Thin-Films for Flexible Electronics
Our experimental results show that this freestanding thin-film approach of layered oxides can provide techniques for tuning or realizing unprecedented states beyond conventional thin-film methods, suggesting a pathway in achieving flexible layered-oxide electronics.
Preprint with a published versionBold claims, read criticallyUnified description of exciton, phonon and plasmon dispersions in 2D materials from an optical conductivity approximation
Here, we describe the 2D dispersion of longitudinal excitations by introducing the optical conductivity approximation (OCA), a unified framework that evaluates the finite-q longitudinal response probed by electron energy-loss spectroscopy (q-EELS) by only using the q = 0 optical conductivity.
PreprintElectric-field switchable interlayer magnetic order and anomalous valley Hall effect in Janus VSSe bilayers with different interfaces
Herein, via first-principles calculations, we verify that electrically tunable interlayer magnetic order and valley polarization can be realized in Janus VSSe bilayers with different interfaces.
PreprintDirect observation of the electronic structure of even-layer puckered SnTe monolayer films on graphene
We report a direct observation of the electronic structure of monolayer SnTe on graphene by angle-resolved photoemission spectroscopy.
Preprint with a published versionSuppressed Defect Emission and Enhanced Blue Luminescence of Zn-Doped CuBr Quantum Dots synthesized in Room-Temperature Synthesis
We report Zn doping as an effective strategy to mitigate defect-mediated recombination in CuBr QDs synthesized via an eco-friendly supersaturated recrystallization method under ambient conditions.
PreprintBold claims, read criticallyReal-world useMorphological evolution of an Au crystalline domain in a nano-particle investigated by Bragg coherent diffraction imaging
By combining Bragg coherent diffraction imaging with autocorrelation function analysis, we observed a transformation from an anisotropic multi-domain configuration toward a single crystalline equilibrium morphology.
PreprintPhonoMC: Occupation-based deviational Monte Carlo for phonon transport with temperature-dependent scattering
These results show that a fixed deviational reference can be combined with local temperature-dependent scattering and sustained heat deposition in a mode-resolved Monte Carlo description of nanoscale thermal transport.
PreprintReal-world useCorrelations of Spectroscopic and Dielectric Properties of Hafnia-Zirconia Nanoparticles
The increase in the intensity of the dielectric permittivity maximum observed near 350 - 450 K in a PVDF matrix with embedded Hf0.4Zr0.6O2 nanoparticles can be related with an increase in oxygen vacancy concentration.
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