A5085241766- Plasma Applications and Diagnostics
- Plasma Diagnostics and Applications
- Electrohydrodynamics and Fluid Dynamics
- Aerosol Filtration and Electrostatic Precipitation
- Laser-induced spectroscopy and plasma
- Surface Modification and Superhydrophobicity
- Plasma and Flow Control in Aerodynamics
- Dust and Plasma Wave Phenomena
- Catalytic Processes in Materials Science
- Ammonia Synthesis and Nitrogen Reduction
- Electrostatic Discharge in Electronics
- Mass Spectrometry Techniques and Applications
- Mercury impact and mitigation studies
- Advancements in Transdermal Drug Delivery
- Endodontics and Root Canal Treatments
- Burn Injury Management and Outcomes
- Nanomaterials and Printing Technologies
- Spectroscopy and Laser Applications
- Dermatologic Treatments and Research
- Heme Oxygenase-1 and Carbon Monoxide
- Microbial Inactivation Methods
- Laser Applications in Dentistry and Medicine
- Laser Design and Applications
- Gas Sensing Nanomaterials and Sensors
- Hemoglobin structure and function
Huazhong University of Science and Technology
2016-2025
University of Science and Technology
2021-2022
Kantonsschule Enge
2021
Anhui University of Technology
2020-2021
Union Hospital
2020
Shanghai Jiao Tong University
2014-2020
State Key Laboratory of Advanced Electromagnetic Engineering and Technology
2012-2018
Xi'an Jiaotong University
2016
Queensland University of Technology
2015
Commonwealth Scientific and Industrial Research Organisation
2009-2013
Atmospheric-pressure non-equilibrium plasma jets (APNP-Js), which generate in open space rather than a confined discharge gap, have recently been topic of great interest. In this paper, the development APNP-Js will be reviewed. Firstly, are grouped based on type gas used to ignite them and their characteristics discussed detail. Secondly, one most interesting phenomena APNP-Js, 'plasma bullet', is its behavior described. Thirdly, very recent developments when launched controlled environment...
As low-temperature nonequilibrium plasmas come to play an increasing role in biomedical applications, reliable and user-friendly sources need be developed. These plasma have meet stringent requirements such as low temperature (at or near room temperature), no risk of arcing, operation at atmospheric pressure, preferably hand-held operation, concentration ozone generation, etc. In this letter, we present a device that meets exactly requirements. This is capable generating cold plume several...
Nonequilibrium plasmas driven by submicrosecond high voltage pulses have been proven to produce high-energy electrons, which in turn lead enhanced ionization and excitations. Here, we describe a device capable of launching cold plasma plume the surrounding air. This device, “the pencil,” is few hundred nanosecond wide at repetition rates kilohertz. Correlation between current-voltage characteristics fast photography shows that fact small bulletlike volume traveling unusually velocities. A...
Novel plasma-based technologies that offer maximum efficiency at minimal environmental costs are expected to further promote the sustainable societal and economic development. Unique transfer of chemical reactivity energy from gaseous plasmas water takes place in absence any other chemicals, but results a product with notable transient broad-spectrum biological activity, referred as plasma-activated (PAW). These features make PAW green prospective solution for wide range biotechnology...
A single electrode room-temperature atmospheric pressure plasma plume generated between a high-voltage and the surrounding room air is reported. The has peak current of about 360mA. This highest carried by ever rotational vibrational temperature 300 2950K, respectively. Emission spectra show that excited species, such as O, OH, N2+, etc., are present in plume.
Low temperature plasmas have been used in various plasma processing applications for several decades. But it is only the last thirty years or so that sources generating such at atmospheric pressure reliable and stable ways become more prevalent. First, late 1980s, dielectric barrier discharge was to generate relatively large volume diffuse pressure. Then, early 2000s, jets can launch cold plumes ambient air were developed. Extensive experimental modeling work carried out on both methods much...
Guided ionization waves, or plasma streamers, are increasingly important for many applications in spanning materials processing and biomedicine. The highly reproducible, repeatable behavior of the most puzzling kind streamers–plasma bullets is attractive as it promises a high degree control applications. However, despite dozen years since discovery this phenomenon, exact reasons such still remain essentially unclear. To understand dynamics guided wave (plasma bullet), large number works have...
The roles of various plasma agents in the inactivation bacteria have recently been investigated. However, up to now, effect charged particles on is not well understood. In this paper, an atmospheric pressure jet device, which generates a cold plume carrying peak current 300 mA, used investigate role process. It found that play minor process when He/N2(3%) as working gas. On other hand, He/O2(3%) used, are expected important bacteria. Further analysis shows negative ions O2− might be playing...
In this letter, a room temperature atmospheric pressure plasma jet device is reported. The high voltage electrode of the covered by quartz tube with one end closed. device, which driven kilohertz ac power supply, capable generating plume up to 11cm long in surrounding air. rotational and vibrational temperatures are 300 2300K, respectively. A simple electrical model shows that, when contacted human, drop on human less than 66V for applied 5kV (rms).
Abstract Summary: A device capable of generating a relatively long cold plasma plume has recently been developed. The advantages this are: controllability and stability, room temperature atmospheric pressure operation, low power consumption. These features are what is required from source to be used reliably in material processing applications, including the biomedical applications. In communication we describe present evidence that it can successfully inactivate Escherechia coli targeted...
Abstract Reports show that cold atmospheric‐pressure plasmas can induce death of cancer cells in several minutes. However, very little is presently known about the mechanism plasma‐induced cells. In this paper, an plasma plume used to treat HepG2 The experimental results effectively control intracellular concentrations ROS, NO and lipid peroxide. It shown these are directly related death, which involves stages. First, generates species, increases concentration extracellular medium. Second,...
The application of cold plasma in sterilization a root canal tooth has recently attracted great attention. In this paper, reliable and user-friendly plasma-jet device, which can generate inside the canal, is reported. be touched by bare hands directed manually user to place it into for disinfection without causing any painful sensation. When He/O <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sub> (20%) used as working gas, rotational...
Nonequilibrium, atmospheric pressure discharges are rapidly becoming an important technological component in material processing applications. Amongst their attractive features is the ability to achieve enhanced gas phase chemistry without need for elevated temperatures. To further enhance plasma chemistry, pulsed operation with pulse widths nanoseconds range has been suggested. We report on a specially designed, dielectric barrier discharge based diffuse and its electrical characteristics....
Abstract Effective biofilm inactivation using a handheld, mobile plasma jet powered by 12 V dc battery and operated in open air without any external gas supply is reported. This cold, room-temperature produced self-repetitive nanosecond discharges with current pulses of ∼100 ns duration, peak amplitude ∼6 mA repetition rate ∼20 kHz. It shown that the reactive species penetrate to bottom layer 25.5 µm-thick Enterococcus faecalis produce strong bactericidal effect. thickest reported...
A numerical and experimental study of plasma jet propagation in a low-temperature, atmospheric-pressure, helium ambient air is presented. self-consistent, multi-species, two-dimensional axially symmetric model with detailed finite-rate chemistry helium–air mixture composition used to provide insights into the jet. The obtained simulation results suggest that sheath forms near dielectric tube inner surface shields channel from surface. strong electric field at edge enhances ionization mixing...
Atmospheric pressure room temperature plasma jets (APRTP-Js) that can emit a mixture of different active species have recently found entry in various medical applications. Apoptosis is key event APRTP-Js-induced cellular toxicity, but the exact biological mechanisms underlying remain elusive. Here, we explored role reactive oxygen (ROS) and nitrogen (RNS) apoptosis using vitro model HepG2 cells. We APRTP-Js facilitated accumulation ROS RNS cells, which resulted compromised antioxidant...
This paper provides a new insight into the fundamentals of plasma medicine: The definition “plasma dose.” Based on dominant role reactive oxygen nitrogen species (RONS) in biological effects, we first propose equivalent total oxidation potential (ETOP) as dose. ETOP includes three parts: item H, which is RONS generated by plasma; T, associated with agents unrelated to RONS, such UV/vacuum ultraviolet (VUV) emission and f(H,T), related synergistic effects between H T factors. To evaluate...
Interactions between effects generated by cold atmospheric-pressure plasmas and water have been widely investigated for purification, chemical nanomaterial synthesis, and, more recently, medicine biotechnology. Reactive oxygen nitrogen species (RONS) play critical roles in transferring the reactivity from gas to solutions induce specific biochemical responses living targets, e.g., pathogen inactivation biofilm removal. While this approach works well a single-organism system at laboratory...
Plasma, the fourth and most pervasive state of matter in visible universe, is a fascinating medium that connected to beginning our universe itself. Man-made plasmas are at core many technological advances include fabrication semiconductor devices, which enabled modern computer communication revolutions. The introduction low temperature, atmospheric pressure biomedical field has ushered new revolution healthcare arena promises introduce plasma-based therapies combat some thorny long-standing...