Article
Chemistry, Multidisciplinary
Gyeong-Su Park, Kyung Suk Min, Hyuksang Kwon, Sangwoon Yoon, Sangwon Park, Ji-Hwan Kwon, Sangmin Lee, Jaeyeon Jo, Miyoung Kim, Seong Keun Kim
Summary: Research using high spatial- and spectral-resolution mapping of LSPR modes and nanoscale strain mapping investigates the distribution of LSPR modes and the effect of defect-induced strains on properties.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Analytical
Seong Eun Heo, Ji Won Ha
Summary: The mesoporous silica coated gold nanorods show improved refractive index sensitivity after mercury amalgamation. Investigation of LSPR scattering inflection points helps to determine the sensing performance of the nanoparticles.
MICROCHEMICAL JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Cheng-Chuan Chen, Shu-Cheng Lo, Pei-Kuen Wei
Summary: Label-free detection of mercuric ions in aqueous solutions was achieved using capped gold nanoslit arrays combined with electrochemical sensing technique. The system showed high sensitivity and selectivity towards Hg2+ ions, with a detection range from 100 μM to 10 nM and a detection limit of 1 μM. The developed system has the potential to be applied in detecting various chemicals and biomolecules.
Article
Multidisciplinary Sciences
Erem Ujah, Meimei Lai, Gymama Slaughter
Summary: A highly sensitive refractive index sensor for glucose detection is developed using a tapered optical fiber coated with gold nanoparticles. The sensor shows improved performance compared to a larger-sized tapered optical fiber, with a sensitivity enhancement of nearly 4 times. The fabricated sensor demonstrates ultrasensitive glucose detection with good stability and fast response, showing potential for real-world applications such as disease diagnosis.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Eugene Ansah, Jesper Leth Bak, Peter Sorensen, Godfred Darko
Summary: Mercury usage in Artisanal Small Scale Gold Mining is a significant contributor to mercury contamination in the environment. This study establishes the pools and fluxes of mercury in Ghana, a country with a large small scale gold mining sector, by estimating mercury losses, deposition using a global long-range transport model, and measuring mercury levels in soils and water. The study also develops a model to assess regional increases in soil and water concentrations due to human activities and simulates future scenarios. The model shows that anthropogenic sources contribute to a 22% increase in soil concentrations.
Article
Chemistry, Multidisciplinary
Shasha Li, Ka Kit Chui, Fuhuan Shen, He Huang, Shizheng Wen, ChiYung Yam, Lei Shao, Jianbin Xu, Jianfang Wang
Summary: Excitons in a transition-metal dichalcogenide monolayer can be modulated through strain and controlled with spatial and spectral control. In this study, strain-localized excitons in a WS2 monolayer were generated and detected by covering the monolayer on individual Au nanodisks or nanorods. Enhanced emission from the strain-localized excitons was observed at room temperature, and the emission intensity and peak energy could be adjusted by the size of the nanodisks. Furthermore, the excitation and emission polarization of the strain-localized excitons could be modulated by anisotropic Au nanorods.
Article
Chemistry, Multidisciplinary
Yu Zou, Jingyu Pang, Fang Zhang, Fang Chai
Summary: Mercury (Hg) is considered the most toxic heavy metal and poses a serious threat to the environment and human health. This study successfully synthesized silver particles selectively sensing Hg2+ through a simple method, showing potential applications in real water samples.
Article
Chemistry, Multidisciplinary
Angeline S. Dileseigres, Yoann Prado, Olivier Pluchery
Summary: The functionalization of gold nanoparticles with thiol molecules in solution is crucial for their application development. In this study, the changes in localized surface plasmon resonance (LSPR) peak due to the reaction between thiol molecules and gold nanoparticles were investigated using UV-visible spectroscopy. The saturation of thiol molecules on the nanoparticle surface was confirmed, and the wavelength shift was accurately predicted using an analytical model. The kinetics of the functionalization reaction were found to be rapid, completing in less than an hour.
Article
Chemistry, Analytical
Yelim Kim, Ahmed Salim, Sungjoon Lim
Summary: A millimeter-wave-based spoof surface plasmonic resonator sensor is designed in this study to measure glucose concentrations. It offers a smaller chip size, higher sensitivity, and reusability compared to microwave sensors. The sensor operates at 28 GHz with an average sensitivity of 0.015669 dB/(mg/dL) within the 0-300 mg/dL range.
Article
Chemistry, Multidisciplinary
Katharina Kaefer, Katja Krueger, Felix Schlapp, Huseyin Uzun, Sirin Celiksoy, Bastian Flietel, Axel Heimann, Thies Schroeder, Oliver Kempski, Carsten Soennichsen
Summary: This study demonstrates the potential of a hydrogel platform embedded with gold nanoparticles for long-term implanted biosensing. By noninvasively monitoring tissue drug concentrations, this technology has the ability to extend the lifespan of implanted sensors.
Article
Biochemical Research Methods
Daniel C. Moreira
Summary: The color shift caused by the interaction between proteins and Coomassie Brilliant Blue in the Bradford assay can be recorded with a smartphone camera, and the data extracted from pictures can be processed as analytical signals to accurately measure protein levels. Plotting the ratio of blue to green intensity as a function of protein concentration results in a linear relationship that can be used to calculate protein levels in biological samples.
ANALYTICAL BIOCHEMISTRY
(2022)
Article
Chemistry, Analytical
Vivek Semwal, Oliver Rishoj Jensen, Ole Bang, Jakob Janting
Summary: This paper presents numerical and experimental results on the effects of spherical gold nanoparticles (AuNPs) size on Localized Surface Plasmon Resonance (LSPR) refractive index (RI) sensitivity, Figure of Merit (FoM), and penetration depth (dp). The study also investigates the influence of AuNP dimer interparticle distance (ds) on these parameters. The results show that a diameter of 60 nm AuNPs provides the best FoM. Furthermore, the interparticle distance between d = 20 nm and 60 nm AuNPs significantly affects the RI sensitivity. The importance of penetration depth information for biosensing using aptamers is discussed in relation to aptamer size.
Article
Engineering, Electrical & Electronic
Yumei Zhang, Liyun Ding, Jue Zhao, Xingdong Jiang, Fei Ma
Summary: Acetylcholine is an important neurotransmitter that can be detected using a simple electrostatic interaction to create an optical fiber biosensor. The biosensor has high sensitivity and a linear range, making it more convenient, simple, and cost-effective compared to traditional detection methods.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Analytical
Akram Hajinia, Tahereh Heidari
Summary: The study developed a simple, low-cost and sensitive micro fluidic paper-based analytical device for analysis of gold in geological samples. Through optimization, efficient detection of gold with good accuracy was achieved.
MICROCHEMICAL JOURNAL
(2021)
Article
Biophysics
Ning Bi, Yinhong Zhang, Yahua Xi, Meihua Hu, Wei Song, Jun Xu, Lei Jia
Summary: A simple and rapid colorimetric assay for determination of mercury(II) ion in aqueous solutions was developed based on aggregation of gold/silver alloy nanocomposites. The method showed high specificity for Hg2+ and a low detection limit, with no interference from other environmentally relevant metal ions. The shift in absorbance ratio was proportional to Hg2+ concentrations in the range of 0.01-10.0 μM.
COLLOIDS AND SURFACES B-BIOINTERFACES
(2021)
Article
Nanoscience & Nanotechnology
Hamed Abdy, Arash Aletayeb, Mohammadreza Kolahdouz, Ebrahim Asl Soleimani
Article
Engineering, Electrical & Electronic
Zahra Heydari, Hamed Abdy, Mahdi Madani, Mohammad Pouya Ghaziani, Mohammadreza Kolahdouz, Ebrahim Asl-Soleimani
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Optics
Saman Ghorbani, Mohammad Bashipour, Mohammadreza Kolahdouz
Article
Engineering, Electrical & Electronic
Amir Hossein Karami, Fatemeh Karami Horestani, Mohammadreza Kolahdouz, Ali K. Horestani, Ferran Martin
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Engineering, Electrical & Electronic
Hamed Abdy, Zahra Heydari, Arash Aletayeb, Mohammadreza Kolahdouz, Ebrahim Asl-Soleimani
Summary: The study compared different deposition methods for perovskite solar cells and found that the electrodeposition method on mesopore substrate achieved 99% surface coverage and the largest grain sizes (340.4 nm), while the solvent engineering method resulted in the most uniform grain sizes for both planar and mesopore TiO2 substrates. The results suggest that electrodeposition may be the preferred method for perovskite deposition in solar applications.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2021)
Article
Engineering, Electrical & Electronic
Amir Hossein Karami, Siamak Rajabi, Mohammadreza Kolandouz, Ferran Martin, Ali K. Horestani
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2020)
Article
Engineering, Electrical & Electronic
Mahsa Pournia, Seyed Ahmadreza Firoozabadi, Morteza Fathipour, Mohammadreza Kolandouz
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2020)
Article
Electrochemistry
Zahra Heydari, Hamed Abdy, Mohammad Pouya Ghaziani, Mohammadreza Kolahdouz, Ebrahim Asl-Soleimani, Mostafa Masnadi-Shirazi
Summary: Organometallic halide perovskites are versatile materials with exciting potential in various optoelectronic devices, but challenges in production process and stability remain. This study demonstrates a scalable method for fabricating high-quality perovskite layers without requiring glove boxes or high vacuum systems. Utilizing different precursors in the electrochemical synthesis can significantly impact the properties of the perovskite film, as shown through the comparison of different treatments.
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
(2021)
Article
Chemistry, Multidisciplinary
Samira Sajed, Mohammadreza Kolandouz, Mohammad Amin Sadeghi, Seyedeh Fatemeh Razavi
Article
Materials Science, Multidisciplinary
Zahra Heydari, Mahdi Madani, Niloofar Majidian-Taleghani, Razieh Teimouri, Hamed Abdy, Mohammadreza Kolahdouz, Hossein Aghababa, Ebrahim Asl-Soleimani
Summary: The advancements in perovskite solar cell technology have made commercialization more realistic, with electrodeposition techniques showing promise for large-scale and low-cost production. Direct conversion of ED-PbO2 layer to perovskite has demonstrated improved structural and optoelectronic properties compared to conventional methods, leading to enhanced photo-sensing capabilities and performance in photodetector devices.
Review
Chemistry, Analytical
Mohammadreza Kolahdouz, Buqing Xu, Aryanaz Faghih Nasiri, Maryam Fathollahzadeh, Mahmoud Manian, Hossein Aghababa, Yuanyuan Wu, Henry H. Radamson
Summary: This paper reviews the basics, advantages, drawbacks, recent progress and advances of carbon-related nanomaterials and nanostructures in micro and nanoelectronics, optoelectronics, and biotechnology.
Article
Materials Science, Multidisciplinary
Niloofar Majidian Taleghani, Zahra Heydari, Mahdi Madani, Aryanaz Faghih Nasiri, Mohammadreza Kolahdouz, Hamed Abdy
Summary: This study improves the processing and electrical performance of CuSCN by using suitable solvents and co-solvents, choosing the proper back contact metal, and adding substitution additives.
Article
Physics, Multidisciplinary
Ali Mahjoory, Payman Kazemikhah, Hossein Aghababa, Mohammadreza Kolahdouz
Summary: This paper proposes an asymmetric tridirectional quantum teleportation (TQT) protocol that uses a seven-qubit cluster states as the quantum channels of each party. In this scheme, any one of the three participants can send their arbitrarily entangled states to the other two concurrently. The tridirectional functionality shows that all three users can act as sender and receiver simultaneously. The proposed scheme and circuit were simulated and validated using IBM quantum experience platform, QASM_simulator and Qiskit library.
Article
Engineering, Electrical & Electronic
Razieh Teimouri, Razieh Keshtmand, Sajad Mehrvarz, Fatemeh Ghasemi, Ali Mahjoory, Mohammadreza Kolahdouz, Nima Taghavinia
Summary: Successful n-type urea treatment of SnO2 was demonstrated by simple, low-temperature approaches of solution and spin-coating preparation, leading to enhanced characteristics of PSCs. PSCs with surface spin-coated urea for SnO2 ETL offer the best power conversion efficiency.
ACS APPLIED ELECTRONIC MATERIALS
(2023)
Article
Chemistry, Analytical
Mengmeng Guo, Na Luo, Yueling Bai, Zhenggang Xue, Qingmin Hu, Jiaqiang Xu
Summary: A porous heterostructure WO3-C/In2O3 was designed and prepared for a miniature H2 sensor, which showed higher response value, lower operating temperature, fast response-recovery speed, and low limit of detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Feng Hu, Hui Hu, Yuting Li, Xiaohui Wang, Xiaowen Shi
Summary: Arsenic contamination in water bodies is a significant health risk. This study developed a chitosan-catechol modified electrode for rapid and accurate detection of trace amounts of arsenic. The modified electrode demonstrated good detection capability and resistance to ionic interference, making it suitable for in situ detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Yantao Zhang, Qian Liu, Tao Tian, Chunhua Xu, Pengli Yang, Lianju Ma, Yi Hou, Hui Zhou, Yongjun Gan
Summary: In this study, a lysosome-targeting buffering fluorogenic probe (Lyso-BFP) was designed and synthesized, demonstrating excellent photostability, pH specificity, and responsiveness to lysosomal acidification in living cells. The performance of Lyso-BFP in pH sensing was attributed to the inhibition of the photo-induced electron transfer process. Lyso-BFP allowed for wash-free imaging and long-term real-time monitoring of lysosome pH changes based on its off-on fluorescence behavior and buffer strategy.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Wei Cai, Wenbo Sun, Jiayue Wang, Xiaokui Huo, Xudong Cao, Xiangge Tian, Xiaochi Ma, Lei Feng
Summary: In this study, a near-infrared fluorescent probe HCBG was developed for imaging of alpha-GLC. HCBG exhibited excellent selectivity and sensitivity towards alpha-GLC in complex bio-samples, and showed good cell permeability for in situ real-time imaging. Through the high-throughput screening system established by HCBG, a natural alpha-GLC inhibitor was successfully isolated and identified. This study provides a novel fluorescence visualization tool for discovering and exploring the biological functions of diabetes-related gut microbiota, and a high-throughput screening approach for alpha-GLC inhibitor.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Trey W. Pittman, Xi Zhang, Chamindie Punyadeera, Charles S. Henry
Summary: Heart failure is a growing epidemic and a significant clinical and public health problem. Researchers have developed a portable and affordable diagnostic device for heart failure that can be used at the point-of-care, providing a valid alternative to current diagnostics approaches.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Anders O. Tjell, Barbara Jud, Roland Schaller-Ammann, Torsten Mayr
Summary: An optical hydrogen peroxide sensor based on catalytic degradation and the detection of produced oxygen is presented. The sensor offers higher resolution and better sensitivity at lower H2O2 concentrations. By removing O2 from the sample solution, a more sensitive O2 sensor can be used for measurement. The sensor has been successfully applied in a flow-through cell to measure H2O2 concentration in different flow rates.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Seong Jae Kim, Ji-hun Jeong, Gaabhin Ryu, Yoon Sick Eom, Sanha Kim
Summary: Surface-enhanced Raman spectroscopy (SERS) is a high-sensitivity, label-free detection method with various analytical applications. Researchers have developed a hydrophobic SERS substrate based on engineered carbon nanotube arrays (CNT-SERS) and studied the role of structural design at both micro and nanoscales. The substrate demonstrated controlled self-enrichment capability and enhanced sensitivity, with a significant increase in the SERS signal. The study also proposed a theoretical model and a concentration strategy inspired by plants for analyte deposition on microarrays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Dan Zhao, Renjun Jiang, Xiaoqiang Liu, Subbiah Alwarappan
Summary: In this study, a novel ternary composite material was constructed by assembling cerium vanadate nanorods on reduced graphene oxide-microcrystalline cellulose nanosheets, and it was used for real-time monitoring of the concentration of superoxide anions in vivo. The ternary composite showed excellent conductivity, large surface area, and abundant active sites, leading to a wider linear range, high sensitivity, low detection limit, and fast response time for superoxide anion detection.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Tengfei Wang, Liwen Wang, Guang Wu, Dating Tian
Summary: In this study, a covalent organic framework material TaTp-COF with porous and uniform spheres was successfully prepared via hydrothermal reaction, and it was found to significantly enhance the aggregation-induced emission (AIE) of berberine. The unique emission properties of berberine on TaTp-COF were studied and utilized for the sensitive detection of berberine.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Lin Li, Yilei Ding, Lei Xu, Shuoran Chen, Guoliang Dai, Pengju Han, Lixin Lu, Changqing Ye, Yanlin Song
Summary: In this study, a novel TTI based on a ratiometric fluorescent nanosensor is designed, which has the advantages of high accuracy and low cost. Experimental and theoretical investigations confirm its pH responsiveness and demonstrate its good sensitivity and reliability. By monitoring the total volatile basic nitrogen, this TTI can accurately predict food spoilage and can be adaptively modified for different types of food. The TTI based on this nanosensor enables visual monitoring of food quality.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Fangju Chen, Xueting Wang, Wei Chen, Chenwen Shao, Yong Qian
Summary: Lung cancer is the second most common malignant tumor worldwide. Drug resistance in lung cancer leads to treatment failure and recurrence in majority of patients. This study developed a fluorescent prodrug that can be activated in cancer cells to release drugs, and its signal can be tracked by imaging. It shows a unique autophagy-driven ferroptosis effect, indicating its potential for targeting drug-resistant cancer cells.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Weichao Li, Qiming Yuan, Zhangcheng Xia, Xiaoxue Ma, Lifang He, Ling Jin, Xiangfeng Chu, Kui Zhang
Summary: This study developed a high-performance gas sensor for formaldehyde detection by modifying ZnSnO3 with ZnO QDs and SnO2 QDs. The modified sensor showed improved sensing response and lower working temperature. The presence of ZnO QDs formed rich heterojunctions, increased surface area, and provided oxygen deficiency for formaldehyde sensing reaction, thus enhancing the sensor performance. This research provides an alternative method to enhance the sensing properties of MOS by QDs modification.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Joung-Il Moon, Eun Jung Choi, Younju Joung, Jin-Woo Oh, Sang-Woo Joo, Jaebum Choo
Summary: A novel nanoplasmonic substrate was developed for biomedical applications, which showed strong hot spots for detecting biomarkers at low concentrations. The substrate, called AuNPs@M13, was made by immobilizing 60 nm gold nanoparticles onto the surface of an M13 bacteriophage scaffold. It demonstrated higher sensitivity and lower limit of detection compared to commercially available assays.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Ning Li, Ya Zhang, Ying Xu, Xiaofang Liu, Jian Chen, Mei Yang, Changjun Hou, Danqun Huo
Summary: The molecular subtype of breast cancer guides treatment and drug selection. Invasive tests can promote cancer cell metastasis, so the development of high-performance, low-cost diagnostic tools for cancer prognosis is crucial. Liquid biopsy techniques enable noninvasive, real-time, dynamic, multicomponent, quantitative, and long-term observations at the cellular, genetic, and molecular levels. A Cu-Zr metal-organic framework (MOF) nanoenzyme with monatomic Cu attachment has been synthesized and proven to have high catalytic performance. The sensor constructed using this nanoenzyme shows potential for accurate classification of breast cancer serum samples.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Chemistry, Analytical
Jeongmin Kim, Hyemin Kim, Seunghyun Park, Hyeonaug Hong, Yong Jae Kim, Jiyong Lee, Jaeho Kim, Seung-Woo Cho, Wonhyoung Ryu
Summary: This study presents a method to fabricate independently functioning microneedle (MN) electrodes with narrow intervals for high precision electrochemical sensing. The optimized mixture of photocurable polymer and single-wall carbon nanotubes was used to mold single composite MNs, which were then attached to pre-patterned electrodes. Plasma etching and electropolymerization were performed to enhance the electrochemical activity, and Prussian blue and glucose oxidase were electrodeposited on the MNs for glucose detection. The MN electrodes showed good sensitivity and linearity, and the feasibility of glucose detection was demonstrated in an in vivo mouse study.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)