Carbon-based materials, characterized by their high specific surface area and exceptional chemical stability, have become integral to adsorption-based remediation methods. Carbon materials demonstrate efficiency, selectivity, environmental compatibility in radionuclide adsorption. However, the practical application of conventional carbon is limited insufficient adsorption capacity selectivity. Plasma modification has emerged as a highly effective strategy for enhancing chemistry thereby...

Abstract On the basis of a thin‐wire contact electrode structure, nonuniform electric field is designed to realize diffuse discharge in atmospheric air. A new method high‐efficiency treatment carbon fiber fabrics by glow plasmas at low voltage proposed. Through this method, are directly used as electrodes, formed on surface, and strong region can be surface fabrics. The high‐active generated study not only introduce nitrogen functional groups that difficult introduced traditional air plasma...

Atmospheric pressure glow discharge (APGD) plasma in air has high application value. In this paper, the methods of generating APGD are discussed, and characteristics dielectric barrier (DBD) non-uniform electric field studied. It makes sure that is formed by DBD alternating current with using absorbing electron capacity electret materials to provide initial electrons end progress. Through designing form two-dimensional space varying three-dimensional field, development avalanches air-gap...

Diabetes is an inflammatory disease that usually causes chronic wounds for which no satisfactory therapies currently exist. Here we report a physical approach using cold atmospheric plasma (CAP) to target diabetic locally regulating the phase of wounds. In this paper, comprehensive analysis factors combined with investigations helium jet characteristics conducted. The and biological safety clinical application prospects CAP human body are also analyzed. results demonstrate first time therapy...

Based on the results of needle electrode discharge experiments and electric field simulations, this study proposes a tip extensional ionization theory for explaining formation mechanism atmospheric pressure glow (APGD) plasma jets. Under condition DC power supply, air jets are realized without airflow. It is found that necessary initial electrons derived from free in space, residual electrons, or runaway difference intensity between lateral side an essential jet. further discovered space...

In order to form an atmospheric-pressure plasma jet without airflow, a needle–ring electrode structure is proposed in this paper. When heteropolar potentials are applied needle and ring, marked electric field strength enhancement around the needle's pointed end has been found. same potential both lateral for can be weakened. By using above two methods, increase of difference between one achieved stable jets formed. A symmetrical space distribution established at needles when several sets...

In order to achieve atmospheric pressure diffuse dielectric barrier discharge (DBD) in air, a helical–helical electrode structure with floating-voltage is proposed this paper. Results from an electric field distribution simulation indicate that strong fields are formed where the helical-contact electrodes' insulating layers contact each other, as well near electrode, which contributes production of large number seed electrons. The within air gap weak (<3 × 106 V m−1), inhibits rapid...

Abstract A method of forming large‐area glow discharge plasmas with good diffusivity in atmospheric air based on the composite network‐surface laminated electrode structure multiple potentials is proposed. This can enhance intensity space electric field and generate plasma under condition that voltage lower than 1 kV. Through alternating field, charged particles diffuse from surface to treatment aramid fabric. According changes morphology, contact angle energy fabric, it be seen roughness...

Cold atmospheric plasmas (CAPs) used in plasma medicine have shown great potential various aspects including wound healing, dermatology, cancer therapy, etc. It is one of the important issues to determine dosage because it dominates specific treatment results. However, multi-process interactions between CAPs and biological materials make rather challenging give an accurate versatile definition for dosage. In this study, ratio discharge energy number treated vitro kidney cells (mJ/cell) was...

An insulated-anode electrode structure with a micropore (IAESM) is proposed in this paper. The aim of study to examine the effect that has on discharge characteristics and plasma generation pulsed vacuum discharge. In study, currents flowing through cathode anode are simultaneously measured by two identical Rogowski coils, density propagation speed using an improved Langmuir probe method. First, differences among IAESM known structures, non-insulated-anode (NIAES) (IAES), were compared...

A method to generate large-area surface plasma in air by micro-discharge is proposed. Two ultrathin laminated electrode structures of non-insulating and insulating types were formed using the nanoscale ITO conductive layer. The glow discharge atmospheric realized low voltage constructing special electric field two-dimensional unidirectional attenuation. In particular, structure can avoid loss electrodes so that stability be increased, treated objects prevented from metal ion pollution caused...

Abstract In order to increase the production of plasma jets in a pulse vacuum discharge, based on insulated anode electrode structure (IAES), discharge experiments by using multiple electrodes under one power supply are performed this paper. During experiments, currents flowing through cathode sides (cathode currents) were measured identical Rogowski coils at same time. The density and propagation velocity self-designed ‘+’ type probes. Firstly, differences characteristics generation between...

This study investigated the effects of a helium cold atmospheric plasma (CAP) on bonding performance and surface modification caries-affected dentin (CAD). Artificial CAD was created by pH-cycling. The microtensile bond were examined before after CAP treatments at 24 h 2-year aging. studied with contact-angle measurement, scanning electron microscopy X-ray photoemission spectroscopy. Thirty-second treatment increased immediate strength to level that statistically same as sound dentin, slowed...

Based on the idea that a large number of charged particles can be generated by high-frequency alternating current (AC) dielectric barrier discharge (DBD), and accelerated directionally direct (DC) electric field, new type ionic wind formation method is proposed in this paper. To end, carbon fiber spiral electrode serves as generation metal rod collection electrode, with AC DC potentials applied respectively to form an AC–DC coupled field. Under action formed electrons move from opposite...

Abstract Micro-cathode arc thruster (µCAT) is an electric propulsion device that uses metal cathode material as propellent to create plasma and ultimately produce thrust, which suitable serve a system for microsatellites. In order improve performance of the µCAT, structure using segmented insulated anode with slit (SISA-µCAT), mainly consists truncated-cone-shaped cathode, insulating sleeve, including proximal distant anode, anodic insulation layer slit, proposed in this paper. We compare...

A metal ion plasma thruster (MIPT) structure using a trumpet-shaped insulated anode with double micropores (TsIADM), which consists of frustum-cone-shaped cathode, insulating sleeve, and anodic layer micropores, is proposed. The differences in discharge characteristics propulsion performance the TsIADM-MIPT two other structures, semi-insulated MIPT conventional exposed (TsEA) MIPT, are compared analyzed. Furthermore, influence that position has on discussed. results show thrust...

An electrode structure with two anodes, one of which is covered by an insulating material layer a micropore, proposed in this letter, and adopting enables special vacuum discharge phenomenon, visible ejected plasma jet formed near the anode pulsed low-current (∼200 A) to be firstly observed. According experimental study theory analysis, formation mechanism phenomenon observed above analysed. Study on vital importance for revealing basic physical processes discharge.

The attenuated total reflection Fourier transform infrared spectroscopy reflection-Fourier (ATR-FT-IR) detection was used to investigate the mechanisms of cold atmospheric plasma (CAP) treatment in wound healing. peaks ester carbonyl and <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">$\alpha $ </tex-math></inline-formula> -helix proteins, serving as spectral fingerprints original spectra their second...

Abstract Selective control of the key parameters cold atmospheric plasmas (CAPs) is crucial for diverse applications ranging from materials processing, clinical medicine to clean energy generation. In particular, low gas temperature ( T g ) and high electron number density n e are both critical obtaining treatment efficiency heat-sensitive materials, yet challenging achieve because very frequent species collision nature in CAPs. this paper, selective a helium CAP driven by radio-frequency...