Article
Spectroscopy
Sathish Sawminathan, Sathiyanarayanan Kulathu Iyer
Summary: The newly developed PHBQ sensor shows high sensitivity and selectivity for the fluorescent turn-on detection of Th4+ ion in acetonitrile: water (8:2) medium. It exhibits distinct spectral changes in response to Th4+ ion and has a very low detection limit.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Engineering, Civil
Yasitha Warahena Liyanage, Daphney-Stavroula Zois, Charalampos Chelmis
Summary: This paper addresses the issue of detecting accidents on a freeway using speed sensors distributed spatially. A novel Bayesian quickest change detection formulation is introduced to address this issue, considering both the average detection delay and false alarm rate. Two methods for recursively estimating unknown parameters and four aggregation methods exploiting spatial correlations are proposed. Extensive evaluation results show significant improvements in average detection delay and false alarm rate compared to prior work.
IEEE TRANSACTIONS ON INTELLIGENT TRANSPORTATION SYSTEMS
(2022)
Article
Engineering, Electrical & Electronic
Katherine Luckasavitch, Ryan Kozak, Kevin Golovin, Mohammad H. Zarifi
Summary: This study compares electrically and magnetically coupled planar microwave resonators for saltwater ice detection applications, finding that the magnetically coupled sensor is sensitive to both RO ice and saltwater ice, while the electrically coupled sensor can only detect the presence of RO ice.
SENSORS AND ACTUATORS A-PHYSICAL
(2022)
Article
Engineering, Environmental
Jyoti Bhardwaj, Nhan Dinh Ngo, Jaegil Lee, Jaesung Jang
Summary: Conventional airborne virus measurement usually takes a long time. In this study, a near real-time enrichment and quantification system for airborne viruses was developed. The system consists of a wet-paper-based electrochemical immunosensor and a modified electrostatic particle concentrator, which allows for efficient enrichment and measurement of airborne viruses. The system can measure virus particle concentrations every 10 minutes for 60 minutes in horizontal and tilted measurement configurations.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Engineering, Environmental
Siyao Yue, Linjie Li, Weiqi Xu, Jian Zhao, Hong Ren, Dongsheng Ji, Ping Li, Qiang Zhang, Lianfang Wei, Qiaorong Xie, Xiaole Pan, Zifa Wang, Yele Sun, Pingqing Fu
Summary: Online detection of bioaerosols based on the light-induced fluorescence (LIF) technique is still challenging, but this study provides insights into the sources of fluorescent aerosol particles (FAP) in the ambient atmosphere. Fungal spores and pollen are widely observed in all types of FAP, while bacteria are associated with fine mode FAP. FL-B and -BC particles, which contribute the most to FAP, are strongly associated with various nonbiological compositions.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Dentistry, Oral Surgery & Medicine
Eun-Song Lee, Elbert de Josselin de Jong, Euiseong Kim, Baek-Il Kim
Summary: This study confirms that real-time optical detection using bacterial autofluorescence can objectively evaluate the status of endodontic infection. The intensity and area of bacterial autofluorescence showed significant correlations with infection severity and can be used to detect root canal infections, which can improve the success rate of root canal treatment.
JOURNAL OF DENTISTRY
(2023)
Article
Biophysics
Li Yang, Mengyao Li, Lijuan Kuang, Yiheng Li, Lili Chen, Chunhua Lin, Li Wang, Yonghai Song
Summary: This study developed a rapid detection method for enrofloxacin and successfully applied it in aquaculture. The fluorescence of covalent organic frameworks was regulated by amine monomers with different properties, and real-time detection was achieved using test paper, gel, and a smartphone app.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Engineering, Mechanical
Keon-Young Kim, Chang-Yull Lee
Summary: This study proposes a new sensing mechanism based on the piezoelectric effect for real-time monitoring of microscopic structural damages. By printing uniform piezoelectric lines to form a layered grid structure, changes in resistance can effectively estimate the damaged areas.
ENGINEERING FAILURE ANALYSIS
(2021)
Article
Nanoscience & Nanotechnology
Israr Ahmed, Mohamed Elsherif, Seongjun Park, Ali K. Yetisen, Haider Butt
Summary: This study developed rapid, reliable, and reusable alcohol sensors based on hydrogel-based fiber optic probes. The sensors were fabricated using a simple, rapid, and facile process by imprinting Aztec microstructures onto alcohol-sensitive hydrogels. The sensors showed real-time sensing capability towards various concentrations of ethanol, isopropanol, methanol, and dimethyl sulfoxide. The developed optical fiber sensors exhibited fast response time, high sensitivity, and low limit of detection, making them suitable for remote and real-time alcohol sensing in multiple industries.
ACS APPLIED NANO MATERIALS
(2022)
Article
Environmental Sciences
Igor E. Agranovski, Evgeny V. Usachev
Summary: Research on rapid and reliable detection of airborne pathogenic microorganisms is urgent due to the current COVID-19 pandemic. The development of a portable first alert bioaerosol monitoring technique using a personal bioaerosol sampler and a laser-based mini PCR machine shows promising outcomes in detecting microbial targets in a short time frame.
ATMOSPHERIC ENVIRONMENT
(2021)
Article
Chemistry, Physical
Appadurai Deepa, Venkatesan Srinivasadesikan, Shyi-Long Lee, Vediappen Padmini
Summary: A novel curcumin analogue, DP4, was synthesized as a fluorescent sensor for isatin in biological systems, showing high selectivity and a low detection limit of 241 nM. The hydrogen bonding interaction between the probe and isatin was studied using H-1 NMR titration and DFT calculation.
JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY A-CHEMISTRY
(2021)
Article
Environmental Sciences
Sheng-Po Chen, Cheng-Hsuan (Sarah) Lu, James E. Davies, Chang-Feng Ou-Yang, Neng-Huei Lin, Amy K. Huff, Bradley R. Pierce, Shobha Kondragunta, Jia-Lin Wang
Summary: This article introduces a near-real-time aerosol forecast and diagnostic approach based on satellite data, focusing on its application in East Asia. The method combines satellite retrievals and modeling techniques to provide cost-effective alternatives for air quality management. The capabilities of the system are demonstrated through case studies on biomass burning and haze events in Southeast Asia and China.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Physics, Applied
Yusong Liu, Wenjun Ni, Liuyang Yang, Siyun Huang, Haoguang Liu, Yixiang Sun, Ran Xia, Yao Yao, Lisong Yan, Yiyang Luo, Zhilin Xu, Gang Xu, Qizhen Sun, Xiahui Tang, Perry Ping Shum
Summary: Optical interferometry is a promising method for acoustic detection, and in this study, a real-time spectral interferometry approach inspired by soliton molecule vibrations in ultrafast lasers is introduced for reading out Fabry-Perot interferometers in acoustic detection. The feasibility of this approach in characterizing both audible and ultrasound signals is experimentally verified, highlighting its potential in wideband acoustic detection and its application in interrogating interferometric fiber sensors.
APPLIED PHYSICS LETTERS
(2023)
Article
Physics, Applied
H. Lindley-Hatcher, R. I. Stantchev, X. Chen, A. I. Hernandez-Serrano, J. Hardwicke, E. Pickwell-MacPherson
Summary: Terahertz imaging has shown potential in detecting skin cancer and has seen significant improvements in instrumentation, allowing for real-time broadband imaging and robust protocols for measuring living subjects. However, there are still challenges to be addressed in applying THz imaging to skin cancer detection.
APPLIED PHYSICS LETTERS
(2021)
Article
Engineering, Electrical & Electronic
Zhihai Lin, Austin Caruso, Megan Makela, Pao Tai Lin
Summary: Real-time and non-destructive acetone vapor detection was successfully achieved using a miniaturized mid-infrared sensor. The sensor consisted of an ultrathin nanoporous anodic aluminum oxide membrane and a polydimethylsiloxane micro-gas chamber, providing high specificity and sensitivity.
IEEE SENSORS JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Jeongan Choi, Seung Chan Hong, Woojin Kim, Jae Hee Jung
Article
Engineering, Environmental
Dong Yun Choi, Ki Joon Heo, Juhee Kang, Eun Jeong An, Soo-Ho Jung, Byung Uk Lee, Hye Moon Lee, Jae Hee Jung
JOURNAL OF HAZARDOUS MATERIALS
(2018)
Article
Chemistry, Analytical
Dung T. Nguyen, Hye Ri Kim, Jae Hee Jung, Kang-Bong Lee, Byoung Chan Kim
SENSORS AND ACTUATORS B-CHEMICAL
(2018)
Article
Chemistry, Analytical
Yu Sung Cho, Seung Chan Hong, Jeongan Choi, Jae Hee Jung
SENSORS AND ACTUATORS B-CHEMICAL
(2019)
Article
Construction & Building Technology
Ki Joon Heo, Jung Woo Noh, Byung Uk Lee, Yeonsang Kim, Jae Hee Jung
BUILDING AND ENVIRONMENT
(2019)
Article
Environmental Sciences
Sang Bin Jeong, Hyun Sik Ko, Sung Chul Seo, Jae Hee Jung
SCIENCE OF THE TOTAL ENVIRONMENT
(2019)
Article
Chemistry, Multidisciplinary
Yu Sung Cho, Hye Ri Kim, Hyun Sik Ko, Sang Bin Jeong, Byoung Chan Kim, Jae Hee Jung
Article
Biophysics
Jeongan Choi, Jiwon Lee, Jae Hee Jung
BIOSENSORS & BIOELECTRONICS
(2020)
Article
Chemistry, Multidisciplinary
Ki Joon Heo, Sang Bin Jeong, Juhun Shin, Gi Byoung Hwang, Hyun Sik Ko, Yeonsang Kim, Dong Yun Choi, Jae Hee Jung
Summary: Bioaerosols, including the 2019 novel coronavirus, are a serious global public health threat. A visible-light-activated antimicrobial air filter with titanium dioxide-crystal violet nanocomposites demonstrates high antimicrobial inactivation and filtration efficiency. Crystal violet plays a role in inducing reactive oxygen species production both directly and indirectly. Improved humidity resistance highlights its potential applicability in real environments.
Article
Chemistry, Multidisciplinary
Ki Joon Heo, Hyun Sik Ko, Sang Bin Jeong, Sang Bok Kim, Jae Hee Jung
Summary: A novel method for obtaining enriched bioaerosol samples with high efficiency and concentration enhancement ratio has been developed through unique aerosol-liquid interaction. This method shows significant potential for air monitoring in occupational and public-health applications with low detection limit and high collection efficiency.
Article
Construction & Building Technology
Sang Bin Jeong, Ki Joon Heo, Hyun Sik Ko, Jae Pyoung Ahn, Seung-Bok Lee, Jae Hee Jung
Summary: The study evaluated the microbial survival rate at each layer of commercial filtering facepiece respirators (FFRs) and surgical masks (SMs), showing that most bacterial particles survived in the filter layer and outer layer, with lower survival rates in the inner layers.
Article
Environmental Sciences
Hyun Sik Ko, Sang Bin Jeong, Sooyeol Phyo, Jiwon Lee, Jae Hee Jung
Summary: The study evaluated the characteristics of particulate and gaseous pollutants produced by a household laser processing equipment, finding that the mode diameters of emitted particles decreased and particle number concentration increased with higher laser power. Additionally, increasing the sheath air flow rate resulted in a decrease in mode diameter of emitted particles but had little effect on particle number concentration.
JOURNAL OF ENVIRONMENTAL SCIENCES
(2021)
Article
Environmental Sciences
Ki Joon Heo, Hyun Ju Oh, Hyeonjin Eom, Yeonsang Kim, Jae Hee Jung
Summary: The use of high-efficiency bag filters coated with PTFE nano particles using air-assisted electrospraying technology shows promising potential in reducing PM emissions from industrial sources. The unique three-dimensional microporous structure of PTFE NPs enhances mechanical filtration performance and improves surface hydrophobicity, highlighting the feasibility of large-scale implementation.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Article
Environmental Sciences
Ki Joon Heo, Inyong Park, Gunhee Lee, Keejung Hong, Bangwoo Han, Jae Hee Jung, Sang Bok Kim
Summary: This study aimed to quantitatively evaluate the effects of air purifiers on the spread of COVID-19 and suggested guidelines for their safe use. The results showed that while the air purifiers had little impact on the spread of simulated respiratory droplet nuclei, they significantly affected the spread of nano-sized virus aggregates. The constant operation of air purifiers with HEPA filters reduced the concentration of both simulated respiratory droplet nuclei and nano-sized aggregates, indicating their effectiveness in reducing airborne particles.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH
(2021)
Article
Physics, Applied
Chan Byon, Sookhee Ku, Woojong Lee, Jae Hee Jung, Woojin Kim
APPLIED PHYSICS LETTERS
(2017)
Article
Engineering, Chemical
Francisco J. Higuera, Juan Fernandez de la Mora
Summary: This study investigates a particle condensation device that uses cold and warm humid air streams to achieve water vapor condensation. Compared to existing water condensation particle counters, this configuration offers advantages such as variable saturation ratio, accelerated penetration of water vapor, and a relatively uniform saturation field.
JOURNAL OF AEROSOL SCIENCE
(2024)
Article
Engineering, Chemical
Brijal Prajapati, Vishal Dharaiya, Manoranjan Sahu, Chandra Venkatraman, Pratim Biswas, Kajal Yadav, Delwin Pullokaran, Ramya Sunder Raman, Ruqia Bhat, Tanveer Ahmad Najar, Arshid Jehangir
Summary: This study evaluated the performance of a low-cost particulate matter sensor and proposed a physics-based calibration method. The results showed that the physics-based calibration approach performed better compared to statistical models at both observation sites.
JOURNAL OF AEROSOL SCIENCE
(2024)
Correction
Engineering, Chemical
N. Searle, K. Kaur, K. Kelly
JOURNAL OF AEROSOL SCIENCE
(2024)
Article
Engineering, Chemical
Tianyu Cen, Laura Torrent, Andrea Testino, Christian Ludwig
Summary: In this study, a hyphenated setup consisting of a rotating disk diluter (RDD) with spICP-MS (RDDspICP-MS) was used for online sampling and characterization of metallic nanoparticles (NPs) in ambient pressure aerosols. The RDD allowed for constant flow rate sampling of aerosols and adjusting the dilution ratio for different particle number concentrations (PNCs). The feasibility of this setup was tested with different sizes of AuNPs in argon-based and air-based aerosols, and the results showed a lower limit of detection for number concentration. The capability of the setup to accurately investigate multi-modal samples and the interference of ionic species was also demonstrated.
JOURNAL OF AEROSOL SCIENCE
(2024)
Article
Engineering, Chemical
A. Valenzuela, E. Bazo, R. A. Rica, L. Alados-Arboledas, F. J. Olmo-Reyes
Summary: This article introduces a method to measure the extinction cross section of levitated particles using an electrodynamic trap and double-cavity ring down spectroscopy technique, and demonstrates the potential of this method in 1,2,6-hexanetriol particles through simulations and experiments. Unlike traditional methods, this technique provides crucial information about the extinction cross section of sodium chloride particles during dehydration and hydration processes.
JOURNAL OF AEROSOL SCIENCE
(2024)
Article
Engineering, Chemical
Shadi Yaqoubi, Mohaddese Sokuti, Sahand Mazloum-Ravasan, Kofi Asare-Addo, Hamed Hamishehkar, Ali Nokhodchi
Summary: In this study, a modified version of ultrasonic spray pyrolysis was used to prepare salbutamol sulfate dry powder. The engineered particles showed suitable characteristics for effective drug delivery to the lungs and demonstrated acceptable aerosolization performance. This newly introduced method appears to be capable of producing dry powder formulations of different drugs without the need for surfactants or stabilizers.
JOURNAL OF AEROSOL SCIENCE
(2024)
Article
Engineering, Chemical
Ashley L. Nord, Patrice Dosset, Pierre Slangen, Manouk Abkarian
Summary: Phonation has been found to be a potent transmission route for the COVID-19 virus. To control transmission, it is important to measure the amount of aerosols produced by speech. Researchers used digital in-line holography to overcome experimental challenges and successfully imaged the formation and deformation of saliva filaments in the mouth during speech, as well as the resulting aerosolized droplets.
JOURNAL OF AEROSOL SCIENCE
(2024)
Article
Engineering, Chemical
Yating Wang, Yiyang Zhang, Zhu Fang, Xinxin Wu
Summary: The research investigates the energy dissipation in particle-wall collision with roughness using the finite element method. The results show that the presence of surface roughness leads to lower viscoelastic dissipation and higher restitution coefficient compared to a smooth surface. The collision time is identified as a key factor in predicting the energy dissipation.
JOURNAL OF AEROSOL SCIENCE
(2024)
Article
Engineering, Chemical
Shaamrit Balendra, Akshay Kale, Julie Pongetti, Mohsen Kazemimanesh, Molly Haugen, Lee Weller, Adam Boies
Summary: The measurement of airborne particles is important for detecting and characterising air pollution, emissions, fire detection, occupational and climate impacts. However, current optical particle counters (OPCs) cannot measure ultrafine particles. This study explores the limitations of miniaturising a condensation particle counter (CPC) growth chamber and provides a toolkit for optimising the design of miniaturised CPC-GCs.
JOURNAL OF AEROSOL SCIENCE
(2024)
Article
Engineering, Chemical
Markus Snellman, Namsoon Eom, Maria E. Messing, Knut Deppert, Chris Hogan
Summary: Segregated bimetallic nanoparticles, such as core-shell nanoparticles, have attracted widespread interest in various fields like biomedicine, catalysis, and optoelectronics. Aerosol technology provides an optimal platform for controlling the size, structure, and composition of nanoparticles, which are crucial parameters for tuning the material performance for specific applications. In this study, researchers developed a novel evaporator design that allows on-line coating of core particles with a shell directly in the gas phase. By utilizing a local heater, the researchers were able to decouple the heating process of the evaporating material from the aerosol particles, thereby limiting core-shell alloying. The resulting core-shell particle formation with controllable shell thickness was demonstrated using evaporation of zinc onto core particles of gold, tin, and bismuth. Simple models were also discussed to explain the observed growth process inside the evaporator and the formation of the shell.
JOURNAL OF AEROSOL SCIENCE
(2024)
Article
Engineering, Chemical
Kentaro Misawa, Yuto Kasai
Summary: In this study, the laser-induced fluorescence technique was used to observe scattered and fluorescent signals from fluorescent polystyrene latex particles. The ratio of fluorescence to scattered signal intensities was found to be almost equal for particles of the same size, allowing for the separate observation of mixed-size fluorescent particles. Relative fluorescence intensities were obtained by incorporating ratios of fluorescence to scattered signal and relative scattered signal intensities.
JOURNAL OF AEROSOL SCIENCE
(2024)
Article
Engineering, Chemical
Sripriya Nannu Shankar, William B. Vass, John A. Lednicky, Tracey Logan, Rebeccah L. Messcher, Arantzazu Eiguren-Fernandez, Stavros Amanatidis, Tara Sabo-Attwood, Chang-Yu Wu
Summary: This study introduces a testing system that allows for direct exposure of aerosolized viruses onto host cells. By collecting particles of different sizes and analyzing them, researchers obtained information on the concentration and viability of the virus at different particle sizes.
JOURNAL OF AEROSOL SCIENCE
(2024)
