Nanoscience and technology

  • Article
    | Open Access

    2D and 3D conductive MOFs have performed well in the fields of energy and catalysis. Here, authors synthesise a 1D conductive MOF in which DDA ligands are connected by double Cu ions, forming nanoribbon layers with π-d conjugated nanoribbon planes and out-of-plane π-π stacking, which facilitates charge transport along two dimensions.

    • Shengcong Shang
    • , Changsheng Du
    •  & Jianyi Chen
  • Article
    | Open Access

    Three decades of research in molecular nanomagnets have enabled the preparation of compounds displaying magnetic memory at liquid nitrogen temperature. Here, the authors provide an innovative framework for the design of molecular magnets based on data mining, and develop an interactive dashboard to visualize the dataset.

    • Yan Duan
    • , Lorena E. Rosaleny
    •  & Alejandro Gaita-Ariño
  • Article
    | Open Access

    In moiré materials, structural relaxation phenomena can lead to unexpected and novel material properties. Here, the authors characterize an unconventional non-local relaxation process in twisted double trilayer graphene, in which an energy gain in one domain of the moiré lattice is paid for by a relaxation that occurs in the other.

    • Dorri Halbertal
    • , Simon Turkel
    •  & D. N. Basov
  • Article
    | Open Access

    The realization of Jones matrix with full eight free parameters is particularly challenging. Here, the authors construct spatially varying Jones matrix with eight free parameters by cascading two-layer metasurfaces and use it for new optical functionalities.

    • Yanjun Bao
    • , Fan Nan
    •  & Baojun Li
  • Article
    | Open Access

    Engineering quantum states requires precise manipulations at the atomic level. Here, the authors use deep reinforcement learning to manipulate Ag adatoms on Ag surfaces, which combined with path planning algorithms enables autonomous atomic assembly.

    • I-Ju Chen
    • , Markus Aapro
    •  & Adam S. Foster
  • Article
    | Open Access

    Bacteriophage are natural antibiotic agents and provide natural building blocks for living biomaterials. Here, the authors crosslink self-organised bacteriophages to make sprayable microgels which preserves the natural antibacterial action, have tuneable auto-fluorescence and demonstrate application in food decontamination.

    • Lei Tian
    • , Leon He
    •  & Zeinab Hosseinidoust
  • Article
    | Open Access

    Neuromorphic computing memristors are attractive to construct low-power- consumption electronic textiles. Here, authors report an ultralow-power textile memristor network of Ag/MoS2/HfAlOx/carbon nanotube with reconfigurable characteristics and firing energy consumption of 1.9 fJ/spike.

    • Tianyu Wang
    • , Jialin Meng
    •  & Lin Chen
  • Article
    | Open Access

    Nanoplastic contamination is a serious environmental concern and could have implications on plant life depending upon interactions. Here, the authors study the effect of size and charge on the accumulation and uptake of model polymer nanoparticles by plant roots which has implications for environmental exposure and nanoparticle delivery to plants.

    • Sam J. Parkinson
    • , Sireethorn Tungsirisurp
    •  & Richard M. Napier
  • Article
    | Open Access

    Traditional carbon nitride membranes are generally presented with random stacking behavior leading to undesired separation performance. Here, authors create lamellar membranes via polycation pillaring to afford adaptive subnanochannels, overcoming the selectivity-permeability trade-off in forward osmosis.

    • Yang Wang
    • , Tingting Lian
    •  & Markus Antonietti
  • Article
    | Open Access

    The orientation of proteins on nanoparticle surfaces is important to the nanoparticle’s fate in vivo. Here, the authors use competitive binding between protein variants to develop a residue-based affinity scale to develop a model for the binding and orientation of proteins on gold nanoparticles

    • Joanna Xiuzhu Xu
    • , Md. Siddik Alom
    •  & Nicholas C. Fitzkee
  • Article
    | Open Access

    While homodimeric prodrug assemblies can improve drug loading and limit toxicity in cancer therapy, bioactivation within the target site is limited. Here, the authors introduce a hybrid chalcogen bond linker to a docetaxel dimeric prodrug nanoassembly and demonstrate its improved selfassembly, redox-responsivity and antitumor efficacy.

    • Tian Liu
    • , Lingxiao Li
    •  & Jin Sun
  • Article
    | Open Access

    Diatomic actinide molecules are ideal models for studying rare multiple-bond motifs. Here, the authors report host-guest structures of metastable charged U≡N diatoms confined in fullerene cages and stabilized by coordinative electron transfer.

    • Qingyu Meng
    • , Laura Abella
    •  & Ning Chen
  • Article
    | Open Access

    Future optical devices, e.g., for AR and VR, will require sophisticated flat metaoptics with unique optical functionalities. The authors demonstrate a metaobjective based on electrically switchable metallic polymer metalenses, whose optical states and focal length is adjustable via CMOS compatible voltages.

    • Julian Karst
    • , Yohan Lee
    •  & Harald Giessen
  • Article
    | Open Access

    Fast-charging is highly desired for lithium-ion batteries but is hindered by potential hazardous lithium plating and the associated parasitic reactions. Here, the authors report a nondestructive differential pressure sensing method for early detection and mitigation of lithium plating in fast-charging batteries.

    • Wenxiao Huang
    • , Yusheng Ye
    •  & Yi Cui
  • Article
    | Open Access

    Electron transfer between mitochondrial cytochrome c and subunit of cytochrome bc1 can proceed at long distance. Here the authors investigate further the mechanism and show phosphorylation regulation of the interactions between the protein partners in the electron transport chain.

    • Alexandre M. J. Gomila
    • , Gonzalo Pérez-Mejías
    •  & Anna Lagunas
  • Article
    | Open Access

    Designing efficient reconfigurable field effect transistors remains a challenge. Here, the authors develop a transistor with three distinct operation modes, realized directly on an industrial 22nm FDSOI platform, demonstrating a reconfigurable analog circuit element with signal follower, phase shifter, and frequency doubler operation.

    • Maik Simon
    • , Halid Mulaosmanovic
    •  & Jens Trommer
  • Article
    | Open Access

    Liposomes are widely used in pharmaceuticals yet trade-offs between uniform size and mass production, limit production and application. Here, the authors report on the design of a microfluidic vortex focusing microfluidic technique which can mass produce liposomes with controlled size and low variability.

    • Jung Yeon Han
    • , Joseph N. La Fiandra
    •  & Don L. DeVoe
  • Article
    | Open Access

    The Su-Schrieffer-Heeger (SSH) model is a prototypical model of topological states, initially proposed to describe spinless electrons on a one-dimensional (1D) dimerized lattice. Here, the authors realize a 2D SSH model in a rectangular lattice of silicon atoms on a silver substrate, observing gapped Dirac cones by angle-resolved photoemission spectroscopy.

    • Daiyu Geng
    • , Hui Zhou
    •  & Baojie Feng
  • Article
    | Open Access

    Magnetic skyrmions, due to their strongly nonlinearity and multiscale dynamics, are promising for implementing reservoir computing. Here, the authors experimentally demonstrate skyrmion-based spatially multiplexed reservoir computing able to perform Boolean Logic operations, using thermal and current driven dynamics of spin structures.

    • Klaus Raab
    • , Maarten A. Brems
    •  & Mathias Kläui
  • Article
    | Open Access

    Focused-ion beam (FIB) lithography enables high-resolution nanopatterning of 2D materials, but usually introduces significant damage. Here, the authors report a FIB-based fabrication technique to obtain high quality graphene superlattices with 18-nm pitch, which exhibit electronic transport properties similar to those of natural moiré systems.

    • David Barcons Ruiz
    • , Hanan Herzig Sheinfux
    •  & Frank H. L. Koppens
  • Article
    | Open Access

    Achieving the delivery of drugs into the centre of solid tumours is a challenge due to the tumour micro-environment. Here, the authors propose a system for using the rapid release of large quantities of drug inside tumour microcapillaries for the gradient-driven diffusion of drugs into solid tumours.

    • Ivan V. Zelepukin
    • , Olga Yu. Griaznova
    •  & Andrei V. Zvyagin
  • Article
    | Open Access

    The 2019 redefinition of the International System of Units requires a 100 Ω quantum resistance standard for the ideal electrical realization of the kilogram via the Kibble Balance. Here, the authors report the realization of an array of 236 graphene quantum Hall bars, demonstrating a quantized resistance of 109 Ω with an accuracy of 0.2 nΩ/Ω over an extended range of bias currents.

    • Hans He
    • , Karin Cedergren
    •  & Gunnar Eklund
  • Article
    | Open Access

    Electrochemical hydrogen-participating processes are commonly relevant in multiple clean energy technologies. Here, authors achieve in situ quantification of H sorption kinetics during Pd-catalyzed CO2 reduction, unravelling its key role within the interfacial network of local pH, proton donors and CO2 molecules.

    • Zhangyan Mu
    • , Na Han
    •  & Mengning Ding
  • Article
    | Open Access

    Self-assembly of block-copolymers yields nanoscale structures in a facile way, but the diversity of structures is limited. Here, the authors demonstrate how block copolymer layering can be used to access new non-equilibrium morphologies.

    • Sebastian T. Russell
    • , Suwon Bae
    •  & Kevin G. Yager
  • Article
    | Open Access

    While transmon is the most widely used superconducting qubit, the search for alternative qubit designs with improved characteristic is ongoing. Hyyppä et al. demonstrate a novel superconducting qubit, the unimon, that combines high anharmonicity and protection against low-frequency charge noise and flux noise.

    • Eric Hyyppä
    • , Suman Kundu
    •  & Mikko Möttönen
  • Article
    | Open Access

    Establishing robust structure/performance correlations is critical for the development of single-atom-catalysts with improved activity. Here, the axial ligand on Pt single-atom-catalyst is precisely adjusted and studied, showing that the ligand’s first electron affinity is crucial for the catalysis.

    • Tianyu Zhang
    • , Jing Jin
    •  & Lei Wang
  • Article
    | Open Access

    A family of single-atom catalysts synthesized by intercalating metal single atoms into the van der Waals gap of two-dimensional SnS2 is reported. The materials are applied as hydrogen evolving catalysts with good durability and overpotential.

    • Huaning Jiang
    • , Weiwei Yang
    •  & Yongji Gong
  • Article
    | Open Access

    Three dimensional topological spin textures, such as hopfions and skyrmion tubes, have seen a surge of interest for their potential technological applications. They offer greater flexibility than their two dimensional counterparts, but have been hampered by the limited material platforms. Here, Grelier et al. look at aperiodic multilayers, and observe a three dimensional skyrmionic cocoon.

    • Matthieu Grelier
    • , Florian Godel
    •  & Nicolas Reyren
  • Article
    | Open Access

    Single molecule force spectroscopy methods are often low throughput and have high instrument cost. Here the authors report FLO-Chip, a low-cost, high throughput technique using microfluidics for multiplexed mechanical manipulation of many individual molecules via molecular fluid loading on-a-chip.

    • Ehsan Akbari
    • , Melika Shahhosseini
    •  & Carlos E. Castro
  • Article
    | Open Access

    The adoption of photonic synapses with biosimilarity to realize analog signal transmission is of significance in realizing artificial illuminance modulation responses. Here, the authors report a biomimetic ocular prosthesis system based on quantum dots embedded photonic synapses with improved depression properties through mid-gap trap.

    • Seongchan Kim
    • , Yoon Young Choi
    •  & Jeong Ho Cho
  • Article
    | Open Access

    Here, the authors attribute the ambient surface contamination of van der Waals materials to a self-organized molecular layer of normal alkanes with lengths of 20-26 carbon atoms. The alkane adlayer displaces the manifold other airborne contaminant species, capping the surface of graphene, graphite, hBN and MoS2.

    • András Pálinkás
    • , György Kálvin
    •  & Péter Nemes-Incze
  • Article
    | Open Access

    Interlayer spacing and termination are important for controlling the physical and chemical properties of MXenes, largely affecting their potential applications. Here authors present a general approach for simultaneously tuning the interlayer spacing and termination of MXenes using Lewis-basic halides.

    • Tianze Zhang
    • , Libo Chang
    •  & Xu Xiao
  • Article
    | Open Access

    Improving fuel cell technologies based on Pt-based alloys is important for efficient fuel cells. Here, the authors report a hybrid PtCo alloy electrocatalyst for acidic oxygen reduction at high current densities and H2/air fuel cell power densities.

    • Lei Huang
    • , Min Wei
    •  & Bao Yu Xia
  • Article
    | Open Access

    By carefully structuring and patterning a material, it is possible to introduce emergent properties that would otherwise not exist. These metamaterials have allowed the development of a wide variety of new optical properties. Here, Matsubara et al present a magnetic metamaterial, where spin-currents can be directed by tuning the polarization of the incident light.

    • Masakazu Matsubara
    • , Takatsugu Kobayashi
    •  & Takeshi Kato
  • Article
    | Open Access

    Understanding water transport through nanochannels is central to biology, separations and clean water. Here, the authors show transport of water vapor through Angstrom-scale pores (~2.8–6.6 Å in diameter) in atomically thin graphene membranes is orders of magnitude faster than liquid water, due to permeation occurring in different flow regimes.

    • Peifu Cheng
    • , Francesco Fornasiero
    •  & Piran R. Kidambi