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
Materials Science, Ceramics
Ji Young Park, Jae-Ho Yi, Yong-Ho Choa
Summary: In this study, a chemi-capacitive sensor based on porous aluminum anodic oxide (AAO) was developed to detect ppb-levels of ethanol gas. This sensor has potential applications in detecting alcoholism and liver disease.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Jhih-Hao Ho, Yi-Fan Chen, Ming-Hsuan Chang, Tsung-Wei Shih, Chih-Ting Liu, Hung-Chieh He, Yu-Liang Lin, Lin-Ruei Lee, Yu-Hsuan Tseng, Teruki Sugiyama, Jiun-Tai Chen
Summary: This study demonstrates a versatile approach to fabricate elliptical and bent polymer nanorod arrays through laser-induced photo-fluidization of azobenzene-containing polymers. The shape manipulation and tailored properties of the nanorod arrays can be controlled by the trans-to-cis and cis-to-trans isomerization of the azobenzene groups. The research provides a beneficial route for preparing ordered arrays of anisotropic polymer nanostructures for advanced applications.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Engineering, Electrical & Electronic
Yin Liu, Qiming Liao, Nan Zhang, Ximing Dong, Naqeeb Ullah, Yongtian Wang, Xiaowei Li, Lingling Huang
Summary: A Raman spectroscopy fiber probe based on metalens has been demonstrated, showing potential for vertical integration and flexible design. By transferring the metalens to the end face of a multimode fiber, an ultrahigh numerical aperture Raman probe was constructed. The proposed probe exhibited significantly higher Raman signal intensity compared to a commercial system based on an objective lens.
IEEE SENSORS JOURNAL
(2023)
Article
Chemistry, Analytical
Chih-Yi Liu, Annada Sankar Sadhu, Riya Karmakar, Cheng-Shane Chu, Yi-Nan Lin, Shih-Hsin Chang, Goutam Kumar Dalapati, Sajal Biring
Summary: Sensitivity is a crucial factor in determining the quality of a fluorescence/phosphorescence-based gas sensor. This study demonstrates highly responsive phosphorescence-based optical oxygen sensors fabricated on highly porous anodic aluminum oxide (AAO) membranes. These sensors make use of the large surface area of the AAO to enhance the interaction between sensing molecules and analytes.
Article
Nanoscience & Nanotechnology
Zhenqing Dai, Jiayuan He, Fangmei Zhou, Tingting Lai, Guangzheng Jiang, Kang Wang, Chengyong Li, Yuqiang Yang
Summary: A surface enhanced Raman spectroscopy (SERS) sensor combined with electric field enrichment technology was developed for rapid and quantitative detection of tetracycline (TC). The sensor showed real-time response and high sensitivity, allowing for quick analysis of TC and potential application in real food samples.
ACS APPLIED NANO MATERIALS
(2023)
Article
Chemistry, Analytical
C. K. Chung, C. A. Ku, Z. E. Wu
Summary: A high-performance humidity sensor was fabricated using commercial large-area low-purity aluminum 1050 alloy through hybrid-pulse anodization in 0.3 M oxalic acid at 20 V at 25 degrees C. The sensor exhibited high response, quick response-recovery time, low cost, short fabrication time, and high capacitance.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Multidisciplinary
Alvaro R. Adrian, Daniel Cerda, Leunam Fernandez-Izquierdo, Rodrigo A. Segura, Jose Antonio Garcia-Merino, Samuel A. Hevia
Summary: Highly ordered carbon nanotube arrays grown on Si substrates were fabricated and their electronic transport properties were explored, revealing low crystallinity and dominant 3D variable range hopping as the transport mechanism. An equivalent circuit model based on a Schottky diode and resistances related to the morphology of the nanotubes was used to study electrical transport, showing fast and reliable resistive response in gas sensing mode for devices containing LC-CNTs between 0.4 nm and 1.1 nm in wall thickness.
Article
Chemistry, Multidisciplinary
Hui Li
Summary: In this study, ammonium oxofluorotitanates were synthesized through the in situ hydrolysis of (NH4)2TiF6 produced in the field-assisted dissolution of fresh TiO2 during the high-field anodization of titanium. The obtained products can be converted to mesocrystalline anatase TiO2 upon thermal annealing.
Review
Chemistry, Multidisciplinary
Chin-An Ku, Chung-Yu Yu, Chia-Wei Hung, Chen-Kuei Chung
Summary: This review focuses on the fabrication methods, pore geometry modification, and recent advances of nanoporous anodic aluminum oxide (AAO), as well as its sensor applications. The pore geometry of AAO can be adjusted by controlling factors such as material composition, applied voltage mold, electrolyte type, temperature, and anodizing time. The sensors based on AAO can be divided into electrical sensors and optical sensors, with their performance influenced by the sensing material and pore geometry.
Article
Chemistry, Multidisciplinary
Anna A. Vasileva, Daria V. Mamonova, Vladimir Mikhailovskii, Yuri V. Petrov, Yana G. Toropova, Ilya E. Kolesnikov, Gerd Leuchs, Alina A. Manshina
Summary: This paper presents a new methodology for creating 3D ordered porous nanocomposites using anodic aluminum oxide template with polyaniline (PANI) and silver NPs. The approach involves in situ synthesis of polyaniline on templates and laser-induced deposition of Ag NPs on the pore walls. The developed structures demonstrated effectiveness as non-enzymatic electrochemical sensors for glucose detection in a concentration range crucial for medical applications.
Article
Materials Science, Multidisciplinary
Jiancheng Liu, Fuchao Jia, Yu Yang, Lexian Sang, Tingting Liu, Xiaomei Wang, Huijuan Niu, Bo Liu
Summary: In this study, in-situ ordered ZnO nanorod arrays (ZnONRs) sensitized by boron nitride quantum dots (BNQDs) were synthesized on the ceramic tube via a simple hydrothermal method. XRD, SEM, TEM, and XPS techniques were employed to characterize the crystalline phase, detailed morphologies, and chemical bond states of the samples. The gas-sensing properties of the sensor for acetone were systematically investigated. The results demonstrated that ZnONRs compounded with BNQDs (BN-ZnONRs) were 1.7 times more responsive to acetone than the pristine ZnONRs, the sensors possessed rapid response/recovery times and outstanding stability. The enhanced sensing performances of BN-ZnONRs can be ascribed to the sensitization effect of BNQDs, which resulted in the adsorption of additional oxygen-active species on the material surface and an effective reduction in the reaction's activation energy.
Article
Chemistry, Analytical
Jinyu Huang, Hao Liang, Jiexiong Ye, Dongting Jiang, Yiling Sun, Xuejin Li, Youfu Geng, Jiaqi Wang, Zhengfang Qian, Yu Du
Summary: Au-loaded ZnO sensors were successfully prepared via seed-assisted solvothermal methods, showing excellent performance in detecting HCHO with significantly improved detection limit and response to HCHO.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Letter
Materials Science, Multidisciplinary
Xi-Di Sun, Hui-Wen Yu, Cheng-Yan Zhao, Jing Zhang, Yi Shi, Li-Jia Pan
Summary: Researchers successfully achieve tunable structural colorations of zirconium (Zr) by coating it with a one-step anodization procedure. The colors of ultrathin zirconia (ZrO2) films can be adjusted by controlling the anodization time and cover the entire visible range. The structural color exhibits excellent stability withstanding rinsing, heat, and ultraviolet irradiation tests, suggesting its potential applications in color displays, camouflage, and anti-counterfeiting technology.
Article
Engineering, Environmental
R. Thangarasu, Karthigaimuthu Dharmalingam, Subramaniyan Ramasundaram, T. Elangovan, O. N. Balasundaram, Trilok Kumar Pathak
Summary: Tennis bat-like V2O5 nanorods were synthesized using a co-precipitation method with various polymeric surfactants, showing different morphological properties depending on the surfactant used. Among them, V2O5 nanorods prepared with PTSA exhibited the highest sensitivity towards ATX vapors, particularly towards toluene, showcasing a significant improvement in sensitivity compared to other gases.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Engineering, Electrical & Electronic
K. V. Divya, Paulose Thomas, K. E. Abraham
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
(2018)
Article
Chemistry, Inorganic & Nuclear
Neena Anna Kurien, K. Divya, Paulose Thomas, K. E. Abraham
SOLID STATE SCIENCES
(2019)
Article
Chemistry, Physical
K. Divya, K. E. Abraham
APPLIED SURFACE SCIENCE
(2019)
Article
Polymer Science
Princy Philip, Tomlal Jose, K. Divya, Jinesh M. Kuthanappilly
Summary: Electrospun PMMA nanofibers are modified by incorporating neodymium complexes, enhancing their optical and structural properties. These improved nanofibers can be utilized in lasers and optical devices for their enhanced performance.
POLYMER-PLASTICS TECHNOLOGY AND MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Baby Thomas, E. Tomlal Jose, Jacob K. Chacko, K. V. Divya
Summary: This study focused on the advantages of surface capping in CdS nanoparticles prepared by a chemical precipitation method, with oleic acid (OA) capping agent showing unique surface morphology and bright green fluorescence properties. Absorption of radiation in the visible and ultraviolet region, large band gap, blue shift in emission, and intense peak were observed in the capped CdS nanoparticles, which were not present in the uncapped nanoparticles. Morphological, structural, optical, and thermal properties of the capped and uncapped CdS nanoparticles were systematically investigated.
JOURNAL OF CLUSTER SCIENCE
(2022)
Article
Nanoscience & Nanotechnology
K. Divya, K. E. Abraham
Proceedings Paper
Materials Science, Multidisciplinary
Neetha John, K. Divya, K. E. Abraham
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS (ICAM 2019)
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
Neena Anna Kurien, K. Divya, Paulose Thomas, K. E. Abraham
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS (ICAM 2019)
(2019)
Proceedings Paper
Materials Science, Multidisciplinary
K. Divya, Neena Anna Kurien, Neetha Rachel John, K. E. Abraham
PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS (ICAM 2019)
(2019)