Deoxyribonucleic acid (DNA) and two-dimensional (2D) transition metal dichalcogenide (TMD) nanotechnology holds great potential for the development of extremely small devices with increasingly complex functionality. However, most current research related to DNA is limited crystal growth synthesis. In addition, since controllable doping methods like ion implantation can cause fatal damage 2D TMD materials, it very hard achieve a low-level concentration (nondegenerate regime) on in present...

A high-sensitivity, label-free method for detecting deoxyribonucleic acid (DNA) using solution-processed oxide thin-film transistors (TFTs) was developed. Double-crossover (DX) DNA nanostructures with different concentrations of divalent Cu ion (Cu(2+)) were immobilized on an In-Ga-Zn-O (IGZO) back-channel surface, which changed the electrical performance IGZO TFTs. The detection mechanism TFT-based biosensor is attributed to electron trapping and electrostatic interactions caused by...

Abstract Double-stranded salmon DNA (SDNA) was doped with doxorubicin hydrochloride drug molecules (DOX) to determine the binding between DOX and SDNA optimum doping concentration in SDNA. thin films were prepared various concentrations of by drop-casting on oxygen plasma treated glass quartz substrates. Fourier transform infrared (FTIR) spectroscopy employed investigate sites for electrical photoluminescence (PL) analyses used DOX. The FTIR spectra showed that up a 30 μM DOX, there tendency...

Abstract A bioinspired neuromorphic device operating as synapse and neuron simultaneously, which is fabricated on an electrolyte based Cu 2+ ‐doped salmon deoxyribonucleic acid (S‐DNA) reported. Owing to the slow diffusion through base pairing sites in S‐DNA electrolyte, synaptic operation of features special long‐term plasticity with negative positive nonlinearity values for potentiation depression (α p α d ), respectively, consequently improves learning/recognition efficiency S‐DNA‐based...

We report on the energy band gap and optical transition of a series divalent metal ion (Cu2+, Ni2+, Zn2+, Co2+) modified DNA (M–DNA) double crossover (DX) lattices fabricated fused silica by substrate-assisted growth (SAG) method. demonstrate how degree coverage DX is influenced monomer concentration also analyze gaps M–DNA lattices. The M–DNA, between lowest unoccupied molecular orbital (LUMO) highest occupied (HOMO), ranges from 4.67 to 4.98 eV as judged transitions. Relative pristine...

For the potential switching bio-memory device application using DNA composite thin film, we fabricated and characterized transparent biocompatible resistive random access memory (RRAM) within structure stacking of Pt/Cu2+ doped salmon DNA/FTO, where Cu2+ doping into was solution-processed. The shows good bipolar characteristics with SET RESET processes at negative positive sweeps, respectively, window greater than 103 ratios. observed to be in low resistance state as its pristine an initial...

The unexpected nuclear accidents have provided a challenge for scientists and engineers to develop sensitive detectors, especially alpha radiation. Due the high linear energy transfer value, sensors designed detect such radiation require placement in close proximity source. Here we report morphological changes optical responses of artificially DNA thin films response exposure as observed by an atomic force microscope, Raman reflectance spectroscopes. In addition, discuss feasibility film...

Abstract Here, we propose a novel DNA-based doping method on MoS 2 and WSe films, which enables ultra-low n- p-doping control allows for proper adjustments in device performance. This is achieved by selecting and/or combining different types of divalent metal trivalent lanthanide (Ln) ions DNA nanostructures, using the newly proposed concept Co-DNA (DNA functionalized both Ln ions). The available n-doping range Ln-DNA between 6 × 10 9 2.6 cm −2 . change adjusted −1.0 −2.4 In Eu 3+ or Gd...

We developed a new method of fabricating divalent copper ion (Cu2+) modified DNA thin film on glass substrate and studied its magnetic properties. evaluated the coercive field (Hc), remanent magnetization (Mr), susceptibility (χ) thermal variation with varying Cu2+ concentrations [Cu2+] resulting in films. Although thickness two dimensional dry state was extremely (0.6 nm), significant ferromagnetic signals were observed at room temperature. The films near 5 mM showed distinct S-shape...

There is growing demand for the development of efficient ultrasensitive radiation detectors to monitor doses administered individuals during therapeutic nuclear medicine which often based on radiopharmaceuticals, especially those involving beta emitters. Recently biological materials are used in sensors nanobio disciplines due their abilities detect specific target or sites. Artificially designed two-dimensional (2D) DNA lattices grown a substrate were analyzed after exposure pure emitters,...

We studied the physical characteristics of modified-DNA (M-DNA) double crossover crystals fabricated via substrate-assisted growth with various concentrations four different divalent metallic ions, Cu2+, Ni2+, Zn2+, and Co2+. Atomic force microscopy (AFM) was used to test stability M-DNA metal ion concentrations. The AFM images show that formed without deformation at up critical 6 mM [Cu2+], 1.5 [Ni2+], 1 [Zn2+], [Co2+]. Above these concentrations, exhibited deformed, amorphous structures....

Abstract Here, we report a high performance biosensor based on ( i ) Cu 2+ -DNA/MoS 2 hybrid structure and ii field effect transistor, which refer to as bio-FET, presenting sensitivity of 1.7 × 10 3 A/A. This was achieved by using DNA nanostructure with copper ions (Cu that induced positive polarity in the (receptor). strategy improved detecting ability for doxorubicin-like molecules (target) have negative polarity. Very short distance between biomolecules sensor surface obtained without...

Abstract We report on the development of Ni-shielded ZnO nanorod (NR) structures and impact Ni layer NR properties. developed nickel-capped zinc oxide (ZnO/Ni NR) by e-beam evaporation subsequent annealing ZnO/Ni core/shell nanostructures. The NRs annealed at 400 °C showed superior crystalline emission More interestingly, with increase temperature, crystallinity shells over gradually changed from polycrystalline to single crystalline. presence as a shell completely hindered light...

Crystallization is an essential process for understanding a molecule's aggregation behavior. It provides basic information on crystals, including their nucleation and growth processes. Deoxyribonucleic acid (DNA) has become interesting building material because of its remarkable properties constructing various shapes submicron-scale DNA crystals by self-assembly. The recently developed substrate-assisted (SAG) method produces fully covered substrates using electrostatic interactions...

Lanthanide-ion-modified DNA crystals are fabricated on quartz and silica substrates via surface-assisted growth, the optical band gap electrical Hall transport measured at room temperature for these crystals. The of shows an increasing behavior, second onset showed inverted V shape upon lanthanide ion concentration. At a particular concentration, each into exhibited low resistivity, mobility, high free carrier minimum magneto resistance. experimental results show feasibility in controlling...

Peptide assemblies have received significant attention because of their important role in biology and applications bionanotechnology. Despite recent efforts to elucidate the principles peptide self-assembly for developing novel functional devices, on two-dimensional nanomaterials has remained challenging. Here, we report nature-inspired pristine graphene via optimization peptide-peptide peptide-graphene interactions. Two-dimensional was designed based statistical analyses >104 protein...

SnS nanowires with high aspect-ratio were developed by chemical vapor deposition and their physical properties explored, along field effect transistor characteristics.

Protein–inorganic hybrid CaMoO₄:Eu³⁺ microstructures were unveiled as an efficient photocatalyst for water purification.

A new route to systematically control the optical dispersion properties of surfactant-free deoxyribonucleic acid (DNA) thin solid films was developed by doping them with vitamin B2, also known as riboflavin. Surfactant-free DNA high quality were successfully deposited on various types substrates spin coating aqueous solutions without additional chemical processes, thicknesses ranging from 18 100 nm. Optical investigated measuring UV-visible-NIR transmission, and their refractive indices...

Double and triple lanthanide ion (Ln3+)-doped synthetic double crossover (DX) DNA lattices natural salmon (SDNA) thin films are fabricated by the substrate assisted growth drop-casting methods on given substrates. We employed three combinations of Ln3+-dopant pairs (Tb3+–Tm3+, Tb3+–Eu3+, Tm3+–Eu3+) a pair (Tb3+–Tm3+–Eu3+) with different types Ln3+, (i.e., Tb3+ chosen for green emission, Tm3+ blue, Eu3+ red), as well various concentrations Ln3+ enhancement specific functionalities. estimate...

We constructed lanthanide ion doped double-crossover DNA lattices grown on a silica substrate and studied their photoluminescence characteristics.