The great potential of nanoporous membranes for water filtration and chemical separation has been challenged by the trade-off between selectivity permeability. Here we report on polymer with an excellent balance permeability ions. Our are fabricated irradiating 2-μm-thick polyethylene terephthalate Lumirror® films GeV heavy ions followed ultraviolet exposure. These show a high transport rate K+ up to 14 mol h-1 m-2 alkali metal over >500. Combining experiments molecular dynamics simulations...

Ion-selective nanoporous two-dimensional (2D) materials have shown extraordinary potential in energy conversion, ion separation, and nanofluidic devices; however, different applications require diverse nanochannel devices with selectivity, which is limited by sample preparation experimental techniques. Herein, we develop a heterogeneous graphene-based polyethylene terephthalate (GPETNC) controllable sieving to overcome those difficulties. Simply adjusting the applied voltage, selectivity...

The emergence of nanofluidic memristors has made a giant leap to mimic the neuromorphic functions biological neurons. Here, we report signaling using Angstrom-scale funnel-shaped channels with poly-l-lysine (PLL) assembled at nano-openings. We found frequency-dependent current–voltage characteristics under sweeping voltage, which represents diode in low frequencies, but it showed pinched current hysteresis as frequency increases. is strongly dependent on pH values weakly salt concentration....

ABSTRACT The memristor is the building block of neuromorphic computing. We report a new type nanofluidic based on principle elastic strain polymer nanopores. With nanoparticles absorbed at wall single conical nanopore, we find pinched hysteresis current within scanning frequency range 0.01–0.1 Hz, switching to diode below 0.01 Hz and resistor above 0.1 Hz. attribute tip side caused by electrical force particles adsorbed inner surface. Our simulation analytical equations match well with...

High-linear energy transfer (LET) ion irradiation of cell nuclei induces complex and severe DNA lesions, foci repair proteins are formed densely along the trajectory. To efficiently discriminate distributed/overlapping trajectory, a focus recognition algorithm called FociPicker3D based on local fraction thresholding technique was developed. We analyzed high-resolution 3D immunofluorescence microscopic images obtained kinetics spatial development γ-H2AX, 53BP1 phospho-NBS1 in BJ1-hTERT cells...

Flowerlike ZnO nanocone and nanowire arrays have been grown on a Zn foil via solution-phase approach at low temperature. The tips of the nanocones are about 70–160nm in diameter their roots as thick 350nm; diameters nanowires around 70–110nm. Both grow preferentially along [0001] direction. Transmission electron microscopy analysis reveals that surface is corrugated or protuberant while smooth surface. shapes demonstrate strong UV luminescence band 385nm, also show three weak bands 421,...

Extracting clean energy by converting the salinity gradient between river and sea into is an effective way to reduce global pollution carbon emissions. Reverse electrodialysis (RED) of great importance realize conversion assisting ion-selective membrane. However, its higher ion resistance lower efficiency results in undesirable power performance. Here, we demonstrate a 1D/2D hybrid nanochannel system achieve high osmotic output power. This heterogeneous structure composed two structures,...

Ionic current rectification (ICR) induced by electroosmotic flow (EOF) under concentration gradients can find many applications in micro/nanofluidic sensing and ionic circuits. Here, we focused on the cases with micropores of moderate length–diameter ratios. Through experimental research systematic simulations, EOF-induced ICR was found to exhibit voltage-dependent In considered a weak EOF or strong diffusion, large deviation appears between ion inside micropore bulk value, which fails...

In this work, we demonstrate a process having the capability to realize single-digit nanometer lithography using single heavy ions. By adopting 2.15 GeV 86Kr26+ ions as exposure source and hydrogen silsesquioxane (HSQ) negative-tone inorganic resist, ultrahigh-aspect-ratio nanofilaments with sub-5 nm feature size, following trajectory of ions, were reliably obtained. Control experiments simulation analysis indicate that high-resolution capabilities both HSQ resist contribute fabrication...

Rectified ion transport in nanochannels is the basis of channels biological cells and has inspired emerging nanochannel applications separation, Coulter counters, biomolecule detection energy harvesters. In this work we fabricated a polyethylene terephthalate (PET) conical using latent track etching technique then systematically studied influence cation species on surface with cyclic I–V measurement. We discovered electrical regulation reversible irreversible modification transportation by...

Transistors hit by heavy ions may conduct transiently, thereby introducing transient logic errors. Attackers can exploit these abnormal behaviors and extract sensitive information from the electronic devices. This paper demonstrates an ion irradiation fault injection attack experiment into a cryptographic field-programmable gate-array (FPGA) circuit. The proved that commercial FPGA chip is vulnerable to low-linear energy transfer carbon irradiation, cause leakage of secret key bits. A...

Direct heavy ion mapping of single-event burnout (SEB) in power MOSFETs is presented for the first time utilizing GSI microprobe with Xe and Ar beams. The results indicate that source channel MOSFET are most sensitive areas to SEB. Correlation charge collection mapping, as well difference between two beams discussed.

DNA strand breaks can lead to cell carcinogenesis or death if not repaired rapidly and efficiently. An online live imaging system was established at the high energy microbeam facility Institute of Modern Physics study early fast cellular response damage after linear transfer ion radiation. The HT1080 cells expressing XRCC1-RFP were irradiated with single nickel ions, time-lapse images obtained online. analysis shows that strand-break repair protein XRCC1 recruited hit position within 20 s in...

To study the radiation effect of cosmic heavy ions low fluxes in electronics and living samples, a focusing ion microbeam facility, for with energies several MeV/u up to 100 MeV/u, was constructed Institute Modern Physics Chinese Academy Sciences. This facility has vertical design an experiment platform both in-vacuum analysis in-air irradiation. Recently, (12)C(6+) energy 80.55 successfully achieved at this interdisciplinary full beam spot size 3 μm × 5 on target air. Different from very...

A smart nanofluidic device attracts attention as it enables to control the physicochemical properties and transportation phenomena, by using stimuli-responsive materials. This work reports a bioinspired modification of conical ion track-etched polyethylene terephthalate nanopore surface coating layer poly-l-lysine (PLL), which is commonly used in biotechnology achieve dual-responsive channel pH or temperature. The rectification ionic can be reversed assembling PLL because change bonds from...

In charged nanopores, ionic diffusion current reflects the selectivity and permeability of which determines performance osmotic energy conversion, i.e., output power efficiency. Here, theoretical predictions diffusive currents through cation-selective nanopores have been developed based on investigation transport under salt gradients with simulations. The I satisfies a reciprocal relationship pore length ∝ α/L (α is constant) in long nanopores. α determined by cross-sectional areas paths for...