Article
Chemistry, Multidisciplinary
Dong Hyeun Ka, Ryza Aditya Priatama, Joo Young Park, Soon Ju Park, Seong Bong Kim, In Ah Lee, Young Koung Lee
Summary: Low-temperature atmospheric pressure plasma technology has been used for direct and indirect treatment of bio-samples in agriculture and plant science. This study explored the effects of plasma-activated water (PAW) generated from a surface dielectric barrier discharge device on the early developmental stage of Arabidopsis thaliana L. Results showed that PAW treatment affected root development by modulating root hair cell density and was associated with the expression of root developmental-related genes.
APPLIED SCIENCES-BASEL
(2021)
Article
Materials Science, Multidisciplinary
Matthew Lindley, Julia Gala de Pablo, Jorgen Walker Peterson, Akihiro Isozaki, Kotaro Hiramatsu, Keisuke Goda
Summary: Cell sorting is an important tool in biological research and medicine. Raman-activated cell sorting (RACS) has gained attention for its ability to discriminate cells based on their intracellular chemical content without the need for labeling. However, the widespread use of RACS has been limited by a trade-off between throughput and measurement bandwidth. In this study, this trade-off is overcome and broadband RACS in the fingerprint region with a record high throughput is demonstrated. Real-time label-free sorting of microalgal cells based on their accumulation of carotenoids and polysaccharide granules is also showcased.
ADVANCED MATERIALS TECHNOLOGIES
(2022)
Article
Physics, Applied
David Z. Pai
Summary: In situ Raman microscopy using a light sheet technique was utilized to study the plasma-water interface, providing simultaneous measurements of Raman modes of H2O2, NO3(-), and water molecules. The concentrations of NO3(-) and H2O2 increased closer to the interface, with an interfacial layer of NO3(-) determined to have a depth of 28 mu m. The shape of the meniscus may affect the interpretation of depth profiles in plasma-water interfaces.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Analytical
Hugo Kerdoncuff, Lisa C. Deleebeeck, Mikael Lassen
Summary: This study introduces a fast and efficient water quality monitoring system and method based on Raman spectroscopy, allowing quantitative measurement of polyatomic anions in solution. The method successfully quantifies nitrate concentrations in water through multivariate analysis, achieving a detection limit of 0.13 millimolar within 30 seconds. The Raman monitoring method shows good agreement and reproducibility when compared with gravimetrically measured concentrations, demonstrating its suitability for continuous monitoring of water and wastewater quality.
Article
Chemistry, Multidisciplinary
Hunter B. Andrews, Luke R. Sadergaski, Samantha K. Cary
Summary: Laser-induced fluorescence spectroscopy, Raman scattering, and partial least squares regression models were optimized for the quantification of samarium, europium, and lithium chloride. An innovative combination of optimal experimental designs and a genetic algorithm was used for feature selection, resulting in a significant improvement in prediction performance.
Article
Chemistry, Multidisciplinary
Hunter B. Andrews, Luke R. Sadergaski, Samantha K. Cary
Summary: In this study, laser-induced fluorescence spectroscopy, Raman scattering, and partial least squares regression models were optimized for the quantification of samarium, europium, and lithium chloride. The authors propose a unique approach that combines optimal experimental designs for selecting preprocessing transformation and a genetic algorithm for feature selection. The results show that feature selection is a crucial aspect for achieving the optimal regression model.
Article
Chemistry, Physical
Yang Liu, Jiawang Ma, Shenglong Huang, Shuyu Niu, Shuyan Gao
Summary: This study explores the conversion of nitrogen to ammonia through plasma oxidation of air to produce nitrate, which is then reduced to ammonia using highly dispersed Cu-Fe nanoalloy catalysts. The optimized catalyst exhibits high ammonia yield rate and Faraday efficiency. The findings provide a new pathway for ammonia synthesis and offer insights into the design of high-performance NRA catalysts.
Article
Physics, Fluids & Plasmas
He Cheng, Jingyi Luo, Ke Song, Feng Zhao, Dawei Liu, Lanlan Nie, Xinpei Lu
Summary: This paper introduces the concept of ETOP-based plasma dose and the use of the S-logistic model to describe the relationship between PAM dose and cell lethal effects. Experimental results show that ETOP can maximize the lethality difference between normal and cancer cells, providing a strategy for evaluating the selectivity of PAM treatment on different cell types.
PHYSICS OF PLASMAS
(2022)
Article
Chemistry, Multidisciplinary
U. G. Mihiri Ekanayake, Shahrooz Rahmati, Rusen Zhou, Renwu Zhou, Patrick J. Cullen, Anthony P. O'Mullane, Jennifer MacLeod, Kostya (Ken) Ostrikov
Summary: This study presents a green and sustainable strategy for CO2 capture through materials recovery from seawater and biomass, utilizing renewable electricity-driven plasmas as an effective, low-cost energy source for process electrification.
JOURNAL OF CO2 UTILIZATION
(2021)
Article
Astronomy & Astrophysics
J. L. Bishop, S. J. King, M. D. Lane, A. J. Brown, B. Lafuente, T. Hiroi, R. Roberts, G. A. Swayze, J-F Lin, M. Sanchez Roman
Summary: The spectral properties of carbonates and nitrates are characterized by specific vibrational bands and absorption features, allowing for their identification on planetary surfaces. Variations in the vibrational absorptions of these minerals are influenced by mineral structure and cation size, resulting in distinct spectral features. Understanding these spectral properties is crucial for remote mapping of carbonate and nitrate chemistry on planetary bodies.
EARTH AND SPACE SCIENCE
(2021)
Review
Chemistry, Physical
Lea R. Winter, Jingguang G. Chen
Summary: This paper compares the energy requirements, CO2 emissions, and commodity prices of alternative plasma-activated ammonia synthesis with the conventional Haber-Bosch process. Economic positive externalities are evaluated for renewable energy-powered modular ammonia production, with a 6-fold improvement in plasma process efficiency projected to make it competitive. Technological prospects for achieving the thresholds are discussed, including advancements in plasma-catalyst synergy and direct reactions of N-2 with plasma-activated water.
Article
Chemistry, Multidisciplinary
Xin Liu, Wei Chen, Cheng Zhang, Tongtong Li, Jun Huang, Guangliang Chen, Tao Shao, Teng Gong, Kostya Ostrikov
Summary: This study successfully engineered grid-matched palladium-nickel sulfides on a holey surface of nickel foil to enhance the electrocatalytic activity for hydrogen evolution reaction. The synthesized Pd4S-Ni3S2/HPNF catalyst exhibited high HER activity, good stability, and competitive performance.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Review
Chemistry, Physical
Yue-Jiao Zhang, Yue-Zhou Zhu, Jian-Feng Li
Summary: Recently, issues of environmental pollution and energy shortages have become significant challenges due to rapid economic development. To achieve sustainable development, novel environment-friendly clean energy technologies are needed, such as fuel cells, which are considered promising for their clean and complete electrochemical reactions. Raman spectroscopy, including techniques like SERS and SHINERS, provides high sensitivity for studying fuel cell materials and understanding reaction mechanisms, aiding in the design of more efficient catalysts and electrode materials.
ACTA PHYSICO-CHIMICA SINICA
(2021)
Article
Chemistry, Analytical
Xiaozhang Qu, Dan Sun, Yuqi Cheng, Jiafeng Wang, Yan Wang, Weiqing Xu, Guohua Qi, Shuping Xu
Summary: The study used smart nanoprobes to discriminate and monitor the dynamic expression of PD-L1, revealing rapid modulation of PD-L1 content on cell membranes under external electrostimulation. The findings suggest that external electrostimulation may offer a superior approach for regulating PD-L1 compared to chemical drugs, showing potential clinical application value. This versatile strategy could be applied to many membrane protein-related studies, providing a practical method for assessing molecular profiles of cell membrane proteins in response to external stimuli.
Article
Nanoscience & Nanotechnology
Fabio Cardoso Ofredi Maia, Indhira Oliveira Maciel, Daniel Vasconcelos Pazzini Massote, Braulio Soares Archanjo, Cristiano Legnani, Welber Gianini Quirino, Victor Carozo Gois de Oliveira, Benjamin Fragneaud
Summary: This study investigates the existence of defect activated Raman bands in TMDs through bombardment of monolayer MoSe2 with He ions and density functional theory calculations. The results show the possibility of macroscopic quantification of defects in TMDs, essential for technological applications. The findings suggest that the same punctual defect model used for predicting graphene becoming amorphous can also be applied to TMDs.
Review
Multidisciplinary Sciences
Neha Kaushik, Sarmistha Mitra, Eun Jung Baek, Linh Nhat Nguyen, Pradeep Bhartiya, June Hyun Kim, Eun Ha Choi, Nagendra Kumar Kaushik
Summary: This review critically examines methods for generating reactive oxygen species (ROS) and explores their potential as a solution for virus deactivation. The study highlights the ability of ROS to directly eradicate pathogens through oxidative stress and indirectly through non-oxidative mechanisms. Additionally, the novel and environmentally friendly cold plasma delivery system for virus destruction is discussed in detail.
JOURNAL OF ADVANCED RESEARCH
(2023)
Article
Engineering, Environmental
Choe Earn Choong, So Yeon Yoon, Minhee Kim, Gooyong Lee, Sang-Hyoun Kim, Byong-Hun Jeon, Jaeyoung Choi, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: Hydrophobic sulfur (S) core-shell-layered nano-zero-valent iron (Fe) (S-nZVI) was prepared for NO3- reduction using a post-sulfidation method with varying Fe/S mass ratios. S(0.125)ZVI (Fe/S = 0.125) showed good N-O cleavage properties due to high electron transfer efficiency and low surface passivation. It exhibited higher selectivity of NO3- reduction toward N-2 than sole nZVI in synthetic and actual NO3- groundwater.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Chemical
Nurhaslina Abd Rahman, Choe Earn Choong, Saravanan Pichiah, In Wook Nah, Jung Rae Kim, Sang-Eun Oh, Yeomin Yoon, Eun Ha Choi, Min Jang
Summary: Titanium oxide (TiO2) has shown great potential for environmental applications, particularly in the removal of emerging contaminants. However, the scaling up of TiO2-based photoreactors remains challenging due to complex parameters. This review provides a comprehensive overview of recent research on the removal of contaminants of emerging concern using TiO2-based photoreactors, highlighting key influencing factors and discussing future research directions.
SEPARATION AND PURIFICATION TECHNOLOGY
(2023)
Article
Chemistry, Multidisciplinary
Kien Tiek Wong, Boris Brigljevic, Jeong Hyeon Lee, So Yeon Yoon, Seok Byum Jang, Choe Earn Choong, Inwook Nah, Hyeongjun Kim, Hyun-Seog Roh, Sang Kyu Kwak, Hankwon Lim, Min Jang
Summary: This study investigates the applicability of single-atom Mo-doped graphitic carbon nitride nanosheets for the production of propylene carbonate through CO2 cycloaddition. Optimized operational parameters and the use of Mo(2)GCN catalyst result in high catalytic performance.
Article
Chemistry, Multidisciplinary
Wonsun Kim, JaeWoo Park, Yushika Aggarwal, Shital Sharma, Eun Ha Choi, Byoungchoo Park
Summary: In this study, a cathode-side passivation layer of poly(methyl methacrylate) (PMMA) was introduced to enhance the efficiency and stability of self-powered CH3NH3PbI3 perovskite-based photodiodes. The PMMA layer effectively suppressed interface recombination and reduced leakage/noise current in the perovskite film. The PMMA-passivated MAPbI(3) photodiodes demonstrated significantly high specific detectivity values and wide linear dynamic responses with rapid rise and decay response times.
Article
Chemistry, Multidisciplinary
Afza Ahmad, Rohit Kumar Tiwari, Mohd Saeed, Hadba Al-Amrah, Ihn Han, Eun-Ha Choi, Dharmendra K. K. Yadav, Irfan Ahmad Ansari
Summary: In recent times, there has been a significant increase in focusing on the hedgehog (HH)/GLI signaling pathway as a therapeutic target for cervical cancer. The HH pathway is known to play a critical role in the development of cervical cancer and is also associated with recurrence and chemoresistance. Carvacrol (CAR) has previously been shown to inhibit proliferation in prostate cancer cells by targeting the Notch signaling pathway, making it a rational choice to study its antiproliferative effects in cervical cancer cells. This study aimed to investigate the anticancer and apoptotic potential of CAR in C33A cervical cancer cells and explore the underlying mechanisms.
FRONTIERS IN CHEMISTRY
(2023)
Article
Engineering, Chemical
Ju Sung Kim, Jinsung Choi, Young June Hong, Eun Ha Choi
Summary: An Ar-H-2 arc plasma jet under atmospheric pressure was used to remove tin (Sn) contamination on the multi-thin film surface of the Extreme ultraviolet (EUV) mirror. By converting Sn into SnH4, a gaseous compound that can be easily exhausted, the contamination was effectively removed. The discharge conditions, such as the content of H-2 in the mixture gas, applied power, and treatment time, were varied to investigate the plasma characteristics and the degree of Sn removal. The optimal case was found to be treating for at least 1 min under an applied power of 500 W using 5% of H-2 mixed content.
PLASMA CHEMISTRY AND PLASMA PROCESSING
(2023)
Review
Environmental Sciences
Paritosh Patel, Aditya Nandi, Suresh K. Verma, Neha Kaushik, Mrutyunjay Suar, Eun Ha Choi, Nagendra Kumar Kaushik
Summary: Emerging bio-contaminants, such as viruses, have had a significant impact on the health and environment of countries worldwide. Understanding the behavior of viruses is crucial in developing targeted therapeutic and vaccination treatments. Animal models, including non-human primates, rodents, and rabbits, offer advantages in assessing the risks of viral infections and chemical toxins, but their maintenance and experimental redundancy are issues. Therefore, exploring alternative animal models, such as zebrafish, is important. This review focuses on zebrafish traits and their potential in monitoring emerging bio-contaminants, particularly viruses like coronaviridae and poxviridae.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Engineering, Electrical & Electronic
Tirtha Raj Acharya, Dinesh Kumar Chaudhary, Sandhya Gautam, Amrendra Kumar Singh, Rajesh Shrestha, Bishwa Chandra Adhikari, Prajwal Lamichhane, Bhupal Paudyal, Nagendra Kumar Kaushik, Eun Ha Choi
Summary: Thin films of zinc oxide (ZnO) were deposited on glass substrates using chemical bath deposition (CBD) with varied deposition time. The properties and formaldehyde gas responsiveness of the ZnO films were studied in relation to nanoparticle grain sizes. The results showed that longer deposition duration with larger grains led to higher gas response at room temperature. The ZnO films deposited for 1, 2, and 3 h exhibited maximum responses of 5.5, 11.0, and 17.8, respectively, at 400 ppm formaldehyde gas. Additionally, the films could detect as low as 100, 25, and 12 ppm of formaldehyde, respectively.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Physics, Applied
Prajwal Lamichhane, Tirtha R. Acharya, Jaewoo Park, Kirubel A. Amsalu, Byoungchoo Park, Eun Ha Choi
Summary: This study investigates the effects of nonthermal plasma characteristics on surface treatments of polyvinyl alcohol. Various diagnostics, such as Raman spectroscopy, work of adhesion, optical emission spectroscopy, and current-voltage measurements, were used. The findings highlight the importance of controlling the plasma's electron temperature and density to achieve desired surface treatment outcomes. Plasma jets with varying electron temperatures are found to be more suitable for different surface treatments, with high electron temperatures (>1.1 eV) suitable for functional group insertion and low electron temperatures for plasma etching, which increases surface roughness significantly.
PLASMA PROCESSES AND POLYMERS
(2023)
Article
Engineering, Environmental
Minhee Kim, Yeomin Yoon, Norashikin Kamal, Choe Earn Choong, Min Jang, Gooyong Lee
Summary: A novel alkali diffusion reactor using ceramic porous media was developed for the long-term treatment of acidity and heavy metals in acid mine drainage. The reactor achieved suitable pH range for water quality guideline and consistent alkaline diffusion, resulting in long-term heavy metal removal. The precipitation process was identified as the major mechanism for the heavy metal removal. Continuous column tests showed that the reactor successfully treated three consecutive runs of acid mine drainage, indicating its long-term performance and capability.
JOURNAL OF WATER PROCESS ENGINEERING
(2023)
Article
Chemistry, Physical
Muhammad Ali, Amir Muhammad Afzal, Muhammad Waqas Iqbal, Asad Ur Rehman, Saikh Mohammad Wabaidur, Essam A. Al-Ammar, Sohail Mumtaz, Eun Ha Choi
Summary: In this study, rGO and CoMnS nanostructures were synthesized and their structural and electrochemical properties were measured. The rGO@CoMnS composite electrode material showed a superior specific capacity of 1355.8 C/g compared to the reference electrode (747.6 C/g) in a 3-electrode measurement system. The estimated specific capacitance was 2238 F/g. This study provides new opportunities for designing high-performance energy devices.
Review
Biochemistry & Molecular Biology
Desh Deepak Singh, Ihn Han, Eun-Ha Choi, Dharmendra Kumar Yadav
Summary: SARS-CoV-2 causes severe respiratory distress and organ failure, and supportive treatment options are currently used. Targeting viral proteins and enzymes, as well as developing antibodies and antiviral drugs, are effective approaches for COVID-19 treatment. Clinical studies are exploring various therapy categories. This article provides new insights into drug pathophysiology and development.
CURRENT ISSUES IN MOLECULAR BIOLOGY
(2023)
Review
Green & Sustainable Science & Technology
Pradeep Lamichhane, Nima Pourali, Lauren Scott, Nam N. Tran, Liangliang Lin, Marc Escriba Gelonch, Evgeny V. Rebrov, Volker Hessel
Summary: This perspective explores the green synthesis of ethylene using plasma technology. The performance, sustainability, and comparison with conventional and alternative methods are evaluated. The importance of considering environmental, social, and governance factors in business decisions is emphasized, and plasma technology is highlighted as a potentially promising approach for green ethylene synthesis.
RENEWABLE & SUSTAINABLE ENERGY REVIEWS
(2024)
Article
Engineering, Biomedical
Nagendra Kumar Kaushik, Pradeep Bhartiya, Neha Kaushik, Yungoh Shin, Linh Nhat Nguyen, Jang Sick Park, Doyoung Kim, Eun Ha Choi
Summary: This study demonstrates that nitric oxide enriched plasma-activated water (NO-PAW), generated by a microwave plasma system, effectively inhibits coronavirus infection in host lung cells and improves host antiviral responses.
BIOACTIVE MATERIALS
(2023)
