Themed collection Nanoscale and Nanoscale Horizons: Nanodevices

This minireview summarizes the recent cutting-edge works of 2D MXene-based flexible antennas, discusses the existing bottlenecks, and provides some guidelines for the future development of this promising field.

Developement of portable colorimetric devices for detection of heavy metals, anions, biomolecules, pesticides, drugs, and other substances is vital across clinical, environmental, and food safety domains.

This paper reviews the research progress in memristor-based neural networks and puts forward future development trends.

This review discusses the current status of micro/nanorobotic applications by focusing on preclinical studies conducted with animal models.

A comprehensive review on Hg chalcogenide colloidal quantum dot infrared photodetectors, with the essential progress of synthesis methods, property control, device engineering, focus plane array integration and innovative applications.

Graphene-based transistors (gSGFETs) enabled stable full-band brain recordings for 5+ months, allowing precise brain state identification and prediction, which is critical both in brain science and neurology.

Neuromorphic platforms are gaining popularity due to their superior efficiency, low power consumption, and adaptable parallel signal processing capabilities, overcoming the limitations of traditional von Neumann architecture.

In this work, Milano et al. reported on quantum conductance effects in memristive nanowires, unveiling the origin of deviations of conductance levels from integer multiples of the conductance quantum and analyzing conductance fluctuations over time of memristive devices.

Phenethylammonium bromide as an interlayer showed great potential to reduce trap states, balance charge carrier injection, and thus maximize the electroluminescent efficiency of quantum-dot LED.

A novel on-chip microelectromechanical system (MEMS) is used for in situ quantitative testing of asymmetric mechanical properties of nanostructures, with potential applications in nanotechnology research.

The linear conductance update of a CMOS-compatible HfO₂ memristor is improved by introducing a second-order memristor effect and connecting a voltage divider to the device, which makes the memristor crossbar array more energy- and time-efficient.

We present a novel acousto-nanodevice as redox agents triggered by ultrasound. With a piezoelectric nanoparticle with a half-gold surface, it induces protein oxidation via unidirectional electron transfer due to alternating electric polarization.

Two dimensional (2D) metal–semiconductor heterostructures are promising for high-performance optoelectronic devices due to fast carrier separation and transportation.

Integrating rationally designed DNA molecular walkers and DNA origami platforms is a promising route towards advanced nano-robotics of diverse functions.

In the transverse CISS measurement geometry, the magnetization is normal to the current. Transverse spin polarization has been found, even in the absence of electromagnetochiral effects. The CISS signal also satisfies Onsager's reciprocity.

Twin Swiss-roll microelectrodes are built up on a chip delivering a high energy density of 458 μW h cm⁻², which redefines the performance limit in the sub-0.1 square millimeter range.

Schematic illustration of the transition mechanism during the conductive filamentary formation in bilayer HfO₂/ZnO synaptic devices (a) without and (b) with thermal annealing.

A transparent microfluidic electrochemical flow capacitor platform allows for probing the hydrodynamic effects on the electrochemical performance of flowable electrodes.

Multilevel nonvolatile storage and in-memory computing can be achieved simultaneously in one unit of the TiTe₂/Mn₂Se₃/bilayer-In₂S₃/Mn₂Se₃/TiTe₂ multiferroic tunnel junction.

We introduce a soft acousto-magnetic microrobot leveraging acoustic streaming for propulsion and mixing. The manipulation strategy exploits the distinct advantages of each applied field, precise magnetic orientation, and powerful acoustic propulsion.

A PFP-TENG based on a three-tribo-layer structure is proposed. It combines the advantages of elastic and inelastic triboelectric materials, which result in a high power density of 145.3 W m⁻³ and the ability to drive more than 1400 LEDs.

The photosensitive triboelectric nanogenerator exhibits an outstanding photoresponsivity (45.5 V mW⁻¹) and enhanced energy harvesting ability under visible light illumination, and this wearable TENG is promising for smart device technology.

Powered by charge gradient along the nanopore distribution, the nanorobot with three DNA legs can autonomously walk on nanopore-based track.

We theoretically designed a DNA-tracked nanovehicle and investigated its working and turning movements by controlling the nanopore charge density.

Here, we present a highly stretchable hydroxyapatite bionanocomposite for use in triboelectric nanogenerators with excellent performance output.

We highlight the key role of counterions in modulating the conductance of the molecular junctions of polyoxometalate monolayers self-assembled on flat gold electrodes, connected by the tip of a conductive atomic force microscope.

Upconversion broadband white light emission driven by low-power near-infrared lasers has been reported for many materials, but the mechanisms and effects related to this phenomenon remain unclear.

Nanoscale thermal sensing of devices with calibrated scanning thermal microscopy. The calibration allows converting the electrical response of thermo-resistive probes into temperature and considers variable probe-sample thermal exchange processes.

Efficient removal of air pollution caused by volatile organic compounds (VOCs) and particulate matter (PM) through distributed energy collected from the environment is an effective strategy to achieve both energy conservation and better air quality.

A flexible and stretchable single-electrode triboelectric nanogenerator based on a medical conductive hydrogel has been fabricated for biomechanical energy harvesting and electronic switches.

Kinetic Monte Carlo simulations reveals non-filamentary switching in 2D planar memristors, and provides optimization strategies for variability, resistance ratio, and scalability.

The continuous spread of coronavirus disease 2019 (COVID-19) has highlighted the need for simple and reliable diagnostic technologies for point-of-care (POC) virus detection applications.

A room-temperature spin-valve effect was observed in Fe₃GaTe₂/MoS₂/Fe₃GaTe₂ 2D van der Waals (vdW) heterojunction devices.

We demonstrate that a material exhibiting a negative photoconductivity and resistive switching can manifest in-memory OR logic gate operations. We have considered devices based on silver-bismuth-iodide rudorffites for this function.

A fractal switched-capacitor-converter combined with a TENG can greatly improve the output charge/current without reverse starting. The TENG can be integrated with a yoga mat for harvesting human-body motion energy to power portable electronics.