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A single electron can modulate the conductance of an InAs nanowire field-effect transistor by as much as 4,200% at 31 K, and has a charge sensitivity of 6 × 10−5e Hz−1/2 up to ∼200 K.
Graphene devices supported on single-crystal hexagonal boron nitride substrates show an enhanced mobility and carrier homogeneity, as well as reduced roughness, intrinsic doping and chemical reactivity, compared with traditional SiO2 substrates.
Micrometre-thick supercapacitors made from onion-like carbon nanoparticles exhibit orders of magnitude higher capacitance and energy density compared with electrolytic capacitors, and much higher charging/discharging rates than conventional supercapacitors.
By quantifying the competitive adsorption of chemicals and biomolecules onto nanoparticles, an index is developed for characterizing nanomaterials in biological systems, offering a way to create models for predicting the safety of nanomaterials.
A significant enhancement in the conductance of a graphene nanoribbon field-effect transistor is observed when a perpendicular magnetic field is applied.
Two-step bioorthogonal chemistry increases nanoparticle binding for more sensitive cell detection compared with standard techniques, including the biotin–avidin system.
Bacterial cellulose is used as templates to make highly flexible and lightweight magnetic aerogels and stiff magnetic nanopaper that are useful as responsive actuators and functional magnetic materials.
A technique based on scanning probe microscopy, which uses a two-dimensional array of nanoscopic apertures fabricated at the end of polymer tips to channel light to an underlying substrate, can be used to generate arbitrary patterns with both sub-diffraction limit and larger feature sizes over large areas.
Computer simulations show that the shape and initial orientation of nanoparticles on a lipid bilayer can affect the way they penetrate it, thus offering new insights for the design of nanocarriers for various biological applications.
Carbon-black nanoparticles activated by femtosecond laser pulses can facilitate cell uptake of small molecules, proteins and DNA while maintaining high cell viability.
Multiple-transcription-factor proteins are used to build complex logic circuits inside mammalian cells, offering a platform for intelligent therapeutics that interact with biological environments.
Electrons confined to a ferromagnetic metallic nanoparticle in a semiconductor matrix have spin-relaxation times two orders of magnitude longer than any previously measured in a metal, with potential applications for spintronic devices.
Hysteresis-free operation of carbon nanotube transistors in ambient air is demonstrated by using self-aligned on-chip shadow masks to suspend ultraclean nanotubes from needle-like metallic contacts.
Radiofrequency magnetic-field heating of nanoparticles can activate temperature-sensitive ion channels, offering an alternative to optical methods for stimulating cells remotely.
Carbon nanotube tips containing imprints within a non-conducting polymer coating can detect proteins with high sensitivity, offering a label-free alternative to sensors based on biomolecule recognition.
Graphene films with electrical and optical characteristics superior to indium tin oxide are produced in a roll-to-roll process and used to construct devices with flexible touch-screen panels.