Article
Materials Science, Multidisciplinary
Yongxing Lin, Pengfei Qi, Jincheng Liu, Yizhi Zhuo, Cheng Cai, Haibao Zhang, Xiangyang Li, Xianglan Liu, Lin Chen, Sihai Luo, Xingyou Tian
Summary: Large-area gold-coated polyamide 66 nanopillar arrays (PA66NP@Au) with secondary lamellar structures and sub-10-nm gaps were fabricated for surface-enhanced Raman spectroscopy (SERS) using anodized aluminum oxide template, solution-phase growth of PA66 lamellae, and Au sputtering. These closely packed PA66NP@Au arrays exhibited high SERS sensitivity for detection of rhodamine 6g (R6G) molecules with concentration down to 10(-14) m and a large Raman analytical enhancement factor (AEF) of & AP;10(10). Moreover, the PA66NP@Au arrays showed highly sensitive detection of carbendazim, a commonly found pesticide residue, with a limit of detection (LOD) of 0.05 mg L-1 (0.05 ppm), which is lower than the maximum residue limit allowed in Europe Union.
ADVANCED MATERIALS TECHNOLOGIES
(2023)
Article
Environmental Sciences
Kandi Sridhar, Baskaran Stephen Inbaraj, Bing-Huei Chen
Summary: This study developed a paper-based SERS method using grape skin-gold nanoparticles/graphene oxide as a substrate, which showed high sensitivity and stability for detecting organic toxins. It can be applied to real water and food samples with good recovery rates.
Article
Chemistry, Multidisciplinary
Rajeev K. Sinha
Summary: This study reported the fabrication of a surface-enhanced Raman spectroscopy (SERS) substrate on a simple hydrophobic surface and compared two different preparation methods. It was found that a specific preparation method resulted in smaller dried spot size and higher sensitivity to detect target molecules in SERS experiments.
Article
Chemistry, Analytical
Cheng-Ju Sung, Szu-Han Chao, Shih-Chieh Hsu
Summary: This report summarizes the development of biosensors for Rhodamine 6G and in vitro glucose detection based on surface-enhanced Raman scattering technology. The use of NPS-AuFON as the sensor platform, combined with potentiostatic technique and electrochemical adsorption, allowed for optimal detection of low concentrations of glucose. The surface modification technology achieved the goal of detecting a glucose concentration of 11.1 mmol/L (mg/dL) to determine diabetic status, as set by the World Health Organization.
Article
Spectroscopy
Shaoyun Chen, Qi Li, Du Tian, Pai Ke, Xinxin Yang, Qingyun Wu, Jian Chen, Chenglong Hu, Hongbing Ji
Summary: The evaporation-induced aggregation was used to assemble long silver nanowires into a highly aligned structure to achieve uniform hot spots for SERS detection. The glass slide with well-aligned silver nanowires acted as a high sensitivity and excellent reproducibility SERS substrate for detecting analytes.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Chemistry, Physical
Ilya Korolkov, A. Shumskaya, Artem L. Kozlovskiy, Malik E. Kaliyekperov, Lana Lissovskaya, Maxim Zdorovets
Summary: The paper describes the synthesis of a substrate for surface enhanced Raman spectroscopy (SERS) using magnetic nickel nanotubes (Ni NTs) and its application in quantitative analysis of organic molecules. The success of the substrate is achieved by depositing a gold layer on the Ni NTs and the purity and uniformity of the gold layer are confirmed through various analysis methods. The study shows that the magnetic properties of the obtained magnetic Ni-Au NTs remain unchanged compared to the initial Ni nanotubes, and the substrates exhibit high SERS enhancement efficiency.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
P. Varasteanu, A. M. Bujor, C. Pachiu, G. Craciun, I. Mihalache, V. Tucureanu, C. Romanitan, R. Pascu, A. Boldeiu
Summary: Silver-based nanostructures, especially anisotropic ones such as triangular nanoplates, nanorods, nanocubes or silver nanowires, are used as Surface enhanced Raman scattering substrates for different analytes sensing, with outstanding results, in terms of the limit of detection (LOD) and the enhancement factor (EF). These nanostructures have shown great applicability in early clinical cancer diagnosis, trace level detection of organic pollutants, pesticide detection, and even explosives.
JOURNAL OF MOLECULAR STRUCTURE
(2023)
Article
Chemistry, Physical
Muhammed Emre Ayhan, Nagihan Emeller
Summary: This study prepared two different types of graphene-based SERS substrates and compared their activities. The CVDG SERS substrate showed excellent performance in terms of detection limits and is suitable for applications requiring large surface area and transparency; while the MGO substrate exhibited better signal enhancement in high concentration solutions.
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
(2023)
Article
Chemistry, Multidisciplinary
Luis Zamora-Peredo, Josue Ismael Garcia-Ramirez, Amado Carlos Garcia-Velasco, Julian Hernandez-Torres, Leandro Garcia-Gonzalez, Monserrat Bizarro, Adriana Baez-Rodriguez
Summary: This study fabricated ZnO microspheres and Ag/ZnO microspheres using hydrothermal and photodeposition methods, and found that the SERS substrate grown at 9.8 mM during 30 min showed the best SERS activity, with the ability to detect methylene blue at 10(-9) M concentration.
Article
Nanoscience & Nanotechnology
Xin Wang, Seokgyun Ham, Wei Zhou, Rui Qiao
Summary: In this study, molecular dynamics simulations were used to investigate the adsorption of rhodamine 6G and choline molecules on gold electrodes with different surface charges. The results show that both molecules can adsorb on gold surfaces at all surface charge densities, but the adsorption mechanisms and configurations may vary.
Article
Spectroscopy
Dipanwita Majumdar, Subhajit Jana, Samit Kumar Ray
Summary: In this study, a nanohybrid SERS platform was developed by decorating two-dimensional WSe2 flakes with zero-dimensional Au NPs. The hybrid structure exhibited promising SERS activity with a detection limit as low as 10(-9) M, along with reliable signal stability and reproducibility. These results indicate the great potential of the nanohybrid structure in SERS applications.
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY
(2022)
Article
Materials Science, Multidisciplinary
M. Steffi Antony, Rajeshkumar Shankar Hyam
Summary: Gold nanoparticles coated titanium dioxide surface-enhanced Raman scattering (SERS) substrates were fabricated and tested in this study. Amorphous titanium dioxide nanotubes with different geometry were prepared as substrates, and the SERS signal enhancement for the effective detection of rhodamine 6G molecules was studied. The SERS enhancement factor of the substrates was influenced by the geometry of nanotubes and plasmonic photonic interference coupling (P-PIC). The analytical SERS enhancement factor of the substrates was estimated based on reference materials.
MATERIALS SCIENCE AND ENGINEERING B-ADVANCED FUNCTIONAL SOLID-STATE MATERIALS
(2023)
Article
Optics
Furu Zhong, Bin Sun, Jun Tang, Juan He, Yu Zhang, Qingjing Luo
Summary: PhCs with rough surfaces were used to enhance the formation of electromagnetic hotspots and promote SERS activity. The porous silicon PhCs were synthesized and deposited with gold nanoparticles to achieve a SERS substrate for ultratrace chemical sensing. The study demonstrated that the enhanced SERS activity was attributed to the optical characteristics of black silicon and the interaction time period due to the photonic crystals, showing potential for selective detection of military explosives.
Article
Automation & Control Systems
Jordi Van Damme, Hendrik Vansompel, Guillaume Crevecoeur
Summary: This article investigates the use of anodized aluminum foil as an alternative to enameled copper wire in a yokeless and segmented armature axial flux machine. The study compares the dc resistance, thermal properties, and specific torque of the machine using both winding materials. Experimental results show that the use of anodized aluminum foil increases the torque per kg active stator mass by 13% in the prototype machine.
IEEE TRANSACTIONS ON INDUSTRIAL ELECTRONICS
(2023)
Article
Optics
Wei Du, Shengnan Wei, Na Li, Zongshuo Hao, Yue Li, Mingli Wang
Summary: In this study, silver nanoparticles were modified on the facet of an optical fiber to prepare a fiber SERS substrate, which effectively enhanced Raman signals. The performance of the fiber SERS substrate was characterized in terms of uniformity, reproducibility, and stability. The experimental results demonstrated that the preparation method of the fiber SERS substrate enabled in situ and real-time detection, and portable Raman instruments could achieve simple and rapid analysis.
OPTICS AND LASER TECHNOLOGY
(2024)
Article
Materials Science, Multidisciplinary
H. Rojas-Chavez, O. E. Cigarroa-Mayorga, J. L. Gonzalez-Dominguez, N. Cayetano-Castro, M. M. Tellez-Cruz, J. A. Andraca-Adame, M. L. Mondragon-Sanchez
MATERIALS RESEARCH EXPRESS
(2018)
Article
Virology
Jose Manuel Reyes-Ruiz, Juan Fidel Osuna-Ramos, Luis Adrian De Jesus-Gonzalez, Arianna Mahely Hurtado-Monzon, Carlos Noe Farfan-Morales, Margot Cervantes-Salazar, Jeni Bolanos, Oscar E. Cigarroa-Mayorga, Eduardo San Martin-Martinez, Fernando Medina, Rogelio Jaime Fragoso-Soriano, Bibiana Chavez-Munguia, Juan Santiago Salas-Benito, Rosa M. del Angel
Article
Engineering, Electrical & Electronic
H. Rojas-Chavez, H. Cruz-Martinez, F. Montejo-Alvaro, Rurik Farias, Y. M. Hernandez-Rodriguez, A. Guillen-Cervantes, A. Avila-Garcia, N. Cayetano-Castro, D. Medina, O. E. Cigarroa-Mayorga
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2020)
Article
Materials Science, Multidisciplinary
E. F. Vazquez-Vazquez, H. Rojas-Chavez, Y. M. Hernandez-Rodriguez, J. Morales-Bautista, O. E. Cigarroa-Mayorga
Summary: In this study, a MoO3 nanorods/gold nanoparticles (MoO3-Nr/AuNPs) array was prepared on a Mo foil surface by thermal oxidation, and its physical properties were studied using various analytical techniques. The degradation efficiency of methylene blue and photocatalytic reproducibility were significantly enhanced by the addition of AuNPs in the MoO3-Nr array.
Article
Materials Science, Multidisciplinary
H. Rojas-Chavez, A. Miralrio, Y. M. Hernandez-Rodriguez, H. Cruz-Martinez, R. Perez-Perez, O. E. Cigarroa-Mayorga
Summary: Thermal oxidation is a cost-effective method for large-scale production of ZnO microstructures, with controllable morphology achieved by modifying etching conditions. Density functional theory studies showed the reactivity with HNO3 depends on ZnO surfaces, and these microstructures can be applied for photocatalytic degradation of organic pollutants.
Article
Materials Science, Ceramics
Oscar E. Cigarroa-Mayorga
Summary: In this study, manganese iron oxide nanoparticles were synthesized and functionalized with myricetin flavonoid. Different morphologies of the nanoparticles showed varying densities of oxygen vacancies, with icosahedrons exhibiting the highest functionalization efficiency. The myricetin functionalization led to a significant improvement in size stability of the samples, with minimal changes observed over a period of 112 days.
CERAMICS INTERNATIONAL
(2021)
Article
Crystallography
Alberto Mendoza-Sanchez, Francisco J. Cano, Mariela Hernandez-Rodriguez, Oscar Cigarroa-Mayorga
Summary: Nanostructured ZnO arrays were synthesized via a simple method, resulting in two different morphologies with high functionalization efficiency found in grass-like ZnO nanostructures.
Article
Medicine, General & Internal
Rafael Bayareh-Mancilla, Luis Alberto Medina-Ramos, Alfonso Toriz-Vazquez, Yazmin Mariela Hernandez-Rodriguez, Oscar Eduardo Cigarroa-Mayorga
Summary: This research presents a computer system for early detection of breast cancer by detecting asymmetry in mammographic images. The system utilizes Dynamic Time Warping for shape analysis and the Growing Seed Region method for breast skin segmentation. Results show that the system can accurately identify asymmetrical breast images, making it significant for early detection of breast cancer.
Article
Chemistry, Physical
Qi-Wen Chen, Ze-Qing Guo, Jian-Ping Zhou
Summary: Multifunctional continuous solid solutions NFMTO-x were successfully synthesized via a one-step hydrothermal method by controlling the ratio of Mg and Fe. The NFMTO-x materials exhibited enhanced visible light response, effective adsorption and photocatalytic degradation of organic pollutants, CO2 methanation capability, and easy recyclability due to their magnetic properties. This research provides a significant multifunctional material for water purification.
APPLIED SURFACE SCIENCE
(2024)
Review
Chemistry, Physical
George E. Stan, Maziar Montazerian, Adam Shearer, Bryan W. Stuart, Francesco Baino, John C. Mauro, Jose M. F. Ferreira
Summary: Bioactive glasses have the ability to form strong bonds with tissues and release therapeutic ions. However, their biomechanical compatibility limits their use in load-bearing applications. The use of magnetron sputtering technology to fabricate BG coatings shows promise in improving their efficacy and potential for application.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zhaoxuan Wang, Zhicheng Yan, Zhigang Qi, Yu Feng, Qi Chen, Ziqi Song, Meng Huang, Peng Jia, Ki Buem Kim, Weimin Wang
Summary: The corrosion behavior of Fe-60 and Fe-83 ribbons in 0.6 M NaCl was studied. Fe-60 exhibited a local corrosion mode and formed a stable passivation film with higher corrosion resistance, while Fe-83 showed a combination of local and global corrosion modes and had lower corrosion resistance. Controlling the precipitation of nanocrystalline phases and increasing the POx content in the passivation film significantly improved the corrosion resistance of Fe-based glassy alloys.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hao-Kai Peng, Sheng-Yen Zheng, Wei-Ning Kao, Ting-Chieh Lai, Kai-Sheun Lee, Yung- Hsien Wu
Summary: This study investigates the effects of high energy/fluence proton radiation on the performance of HfZrOx-based FeFETs memory with different Zr content. The results show that the characteristics of FeFETs are influenced by proton radiation, and the extent of the influence depends on the Zr content. FeFETs with 50% Zr content exhibit minimal changes in memory window and demonstrate good endurance and retention performance.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Zongyi Yue, Guangyi Wang, Zengguang Huang, Sihua Zhong
Summary: In this study, AZO and ITO films were successfully tuned as excellent passivation layers for c-Si surfaces, achieving effective minority carrier lifetime and outstanding optical properties through the optimization of annealing temperature and interfacial silicon oxide.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Martin Hruska, Jan Kejzlar, Jaroslav Otta, Premysl Fitl, Michal Novotny, Jakub Cizek, Oksana Melikhova, Matej Micusik, Peter Machata, Martin Vrnata
Summary: This paper presents a detailed study on the hydrogen sensing capabilities of highly nanoporous black gold films. The films exhibit fast response and recovery times at low temperatures. Different levels of nanoporosity were prepared and tested to investigate the sensing properties, and it was found that nanoporous black gold is suitable for hydrogen sensing. The sensitivity of the film depends on its nanoporosity.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yupu Wang, Gaofeng Teng, Chun To Yiu, Junyi Zhu
Summary: In the study of BM-SCO and HSCO thin films, it was found that H vacancies tend to prefer sites near the external surface or oxygen vacancy channels (OVCs), while H interstitials prefer sites of oxygen on a layer that contains six-fold coordinated Co. These findings not only enrich the understanding of complex surface phenomena of defect formation but also provide an explanation for the reversibility during phase transformation.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jiafeng Lu, Linping Teng, Qinxiao Zhai, Chunhua Wang, Matthieu Lancry, Ye Dai, Xianglong Zeng
Summary: In this study, we achieved full control of fiber nanograting orientation by manipulating laser polarization, and tailored space variant fiber nanogratings, which expanded the diversity in fiber nanograting engineering.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yibo Liu, Yujie Tao, Yue Liu, Qi Sun, Qinrong Lin, Kexin Kang, Qinghua Zhang, Qingjie Sun
Summary: This study investigates the wettability of the Ti-Cu-Fe multi-metal system, specifically the wetting behaviors of CuSi3 droplets on TC4 and 304SS plates. The results show that the CO2 + Ar gas atmosphere significantly affects interfacial mass transfer, thus influencing the wettability of the systems.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Jimei Liu, Fei Wang, Rong Guo, Yuqi Liu, Mengyu Zhang, Jaka Sunarso, Dong Liu
Summary: This study developed Co/MXene composites with anti-corrosion properties by varying the cobalt content. These composites exhibited remarkable electromagnetic absorption performance and high resistance to corrosion under various corrosive conditions. The study also revealed the mechanism of electron transfer from cobalt to MXene and the electromagnetic dissipation behavior originated from polarization loss alone.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Moujie Huang, Yongsong Ma, Jingbo Yang, Lingyun Xu, Hangqi Yang, Miao Wang, Xin Ma, Xin Xia, Junhao Yang, Deli Wang, Chuang Peng
Summary: Strong metal-support interactions (SMSIs) are important for enhancing catalytic activities and stability in thermal catalysis. This study demonstrates a method to create SMSIs in electrocatalysis using carbon nanotubes and Ru nanoparticles, resulting in excellent catalytic activity and stability.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Ravi Trivedi, Brinti Mondal, Nandini Garg, Brahmananda Chakraborty
Summary: This study explores the potential of biphenylene as a nanocarrier for the delivery of the anticancer drug cisplatin. It is found that biphenylene offers physical stability, rapid release rate, solubility, and bio-compatibilities compared to other nanocarriers. The adsorption of cisplatin on the surface of biphenylene involves charge transfer from cisplatin to biphenylene. The drug is shown to be released at body temperature in an acidic environment. Biphenylene also exhibits excellent cytotoxicity activity and cellular uptake of the drug. Overall, biphenylene shows promise as a potential nanocarrier for cisplatin delivery.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Hyun Jeong, Hyeong Chan Suh, Ga Hyun Cho, Rafael Salas-Montiel, Hayoung Ko, Ki Kang Kim, Mun Seok Jeong
Summary: In this study, a potential platform to enhance Raman scattering and increase the number of observable Raman modes in monolayer transition metal dichalcogenides (TMDs) was proposed. The platform consisted of large-scale arrays of gold micropillars (MPs), which were able to enhance the Raman intensity of TMDs and make difficult-to-detect Raman modes observable. The platform showed great industrial advantages and wide applicability due to its low cost, simple process, large controllable area, and short process time.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Yasir Abbas, Shafqat Ali, Sajjad Ali, Waqar Azeem, Zareen Zuhra, Haoliang Wang, Mohamed Bououdina, Zhenzhong Sun
Summary: In this study, FeOx@SPNO-C core-shell nanospheres as a catalyst for degradation of sulfamethoxazole (SMX) were successfully synthesized. The synergistic interaction between FeOx and SPNO-C, high carbon charge density, and the presence of C = O groups and N/Fe-Nx sites were found to be key factors for the enhanced degradation of SMX.
APPLIED SURFACE SCIENCE
(2024)
Article
Chemistry, Physical
Qiaoting Yang, Yuxiao Gong, Yan Qian, Zhou-Qing Xiao, Serge Cosnier, Xue-Ji Zhang, Robert S. Marks, Dan Shan
Summary: This study proposes a hierarchical confinement strategy to design Prussian blue nanoparticles (PB NPs) with satisfactory electrocatalytic ability and stability. The catalytic synthesis of PB NPs is achieved through a hydrothermal process, and the as-prepared PB@NH2MIL exhibits efficient electronic transmission and enhanced electrocatalytic properties.
APPLIED SURFACE SCIENCE
(2024)