Article
Chemistry, Analytical
Jun Ho Lee, Seung-Eun Baek, Hyun-Sook Lee, Dahl-Young Khang, Wooyoung Lee
Summary: Through experiments and analysis, researchers have successfully developed highly sensitive acetone sensors. Among the four different sensors, the NC(0.5 h)/Line sensor exhibited the best response capability, with a low detection limit as well.
SENSORS AND ACTUATORS B-CHEMICAL
(2021)
Article
Chemistry, Analytical
Kamrul Hassan, Rumana Hossain, Rifat Farzana, Veena Sahajwalla
Summary: This study investigates tuning the sensitivity and selectivity performance of chemo-resistive sensors to detect volatile organic compound (VOC) biomarkers using a hybridized material of pristine graphene and zinc oxide nanoparticles recovered from spent batteries. The hybridized material showed enhanced sensing performance due to the high conductive property of graphene and the synergetic interplay between graphene composite materials and zinc oxide nanoparticles. The improved sensitivity and selectivity for particular VOCs were attributed to the elevated surface area and adsorption capability of the zinc oxide nanoparticles.
ANALYTICA CHIMICA ACTA
(2021)
Article
Nanoscience & Nanotechnology
Nguyen Minh Vuong, Do Dai Duy, Hoang Nhat Hieu, Van Nghia Nguyen, Nguyen Ngoc Khoa Truong, Hao Van Bui, Nguyen Van Hieu
Summary: Highly responsive methanol sensors operating at low temperatures were developed by decorating hierarchical ZnO nanorods with Pt nanoparticles. The surface modification significantly enhanced the sensing response to methanol and enabled lower working temperatures.
Article
Materials Science, Multidisciplinary
Taegun Kim, Chanwoo Park, Edmund P. Samuel, Yong-Il Kim, Seongpil An, Sam S. Yoon
Summary: In this research, nickel nanocones and zinc oxide nanosheets were plated onto a fabric to create multifunctional materials with properties such as wearability, stretchability, washability, hydrophobicity, and antibacterial effects. These materials also have sensing, heating, and supercapacitive properties, making them suitable for applications in healthcare monitoring, smart sportswear, and energy storage. The integration of nickel and zinc oxide enhances electrical conductivity and provides pseudocapacitance via redox reactions with the electrolyte, making the fabric responsive to external stimuli such as temperature and strain.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Sonja Stefanovic, Negar Gheshlaghi, David Zanders, Ivan Kundrata, Baolin Zhao, Maissa K. S. Barr, Marcus Halik, Anjana Devi, Julien Bachmann
Summary: Area-selective atomic layer deposition (AS-ALD) is a bottom-up nanofabrication method that delivers single atoms from a molecular precursor. It offers advantages over lithography in terms of cost, resistance, and equipment prerequisites, but requires pre-patterned substrates and has limited selectivity and substrate choices. These challenges can be overcome with direct patterning using atomic-layer additive manufacturing (ALAM), which enables direct patterning instead of blanket coating. A functional thin-film transistor was created using ALAM-deposited ZnO and characterized.
Article
Electrochemistry
Marya Khan, Vandana Nagal, Sakeena Masrat, Talia Tuba, Nirmalya Tripathy, Mohammad K. Parvez, Mohammed S. Al-Dosari, Ajit Khosla, Hidemitsu Furukawa, A. K. Hafiz, Rafiq Ahmad
Summary: An EGT-based biosensor utilizing Fe2O3 nanoparticles decorated ZnO nanorods was developed for cholesterol detection, showing high sensitivity and a wide linear range. This biosensor demonstrated excellent specificity, reproducibility, stability, and applicability in real serum samples, making it a promising platform for future analyte detection.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2022)
Article
Chemistry, Physical
Watsapon Yimkaew, Rakchart Traiphol, Nisanart Traiphol
Summary: This study explores the application of colorimetric sensors based on polydiacetylene (PDA)/Zn2+/ZnO nanocomposites for detecting organic acid-base in various organic solvents and food products. The sensitivity of the sensors varies with the solvent properties, and it can be fine-tuned by adjusting the ratios of ZnO within the nanocomposites. The solid-state sensors embedded in nylon filters can determine the concentration of sorbic acid in fruit juices and indicate the freshness of milk through naked-eye detection.
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
(2022)
Article
Materials Science, Multidisciplinary
Hun Jang, Do-Kyun Kwon, Do Hoon Kim, Jae-Min Myoung
Summary: A simple and sustainable method is presented for producing ultra-thin flexible UV photodetectors based on ZnO nanorods. The photodetectors are transferred to various flexible substrates using a direct silicon etching transfer (DSET) method, without degradation of their properties. The transferred photodetectors exhibit excellent UV-sensing properties and maintain stability even after repetitive transfers and bending.
JOURNAL OF MATERIALS CHEMISTRY C
(2022)
Article
Materials Science, Ceramics
Majdi Benamara, Pedro Rivero-Antunez, Hassen Dahman, Manel Essid, Souhir Bouzidi, Marc Debliquy, Driss Lahem, Victor Morales-Florez, Luis Esquivias, Jose P. B. Silva, Lassaad El Mir
Summary: This study reports on the preparation and characterization of pure and doped ZnO nanoparticles and their potential as gas sensors. The AZO nanoparticles were prepared using a sol-gel method and annealed at 400 degrees C. The structural and morphological properties were analyzed using XRD, TEM, and SEM. Results showed successful aluminum incorporation into the ZnO lattice, and the nanoparticles exhibited a spherical shape with nanometric dimensions. Gas sensors fabricated using the AZO nanoparticles demonstrated linear responses to gas concentration, with high sensitivity and selectivity to acetone.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Ceramics
Saad Abbas Jasim, Hikmat A. J. Banimuslem, Forat H. Alsultany, Ehssan Al-Bermany, Rawaa M. Mohammed
Summary: A composite material based on zinc oxide (ZnO) and multi-walled carbon nanotubes (CNT) was synthesized using sol-gel method. Colloidal nanoparticles were produced, as indicated by the color of the solution and SEM images. Thin layers were deposited on glass substrates and interdigitated electrodes using spray pyrolysis for device construction. Samples heated at 400°C exhibited better interaction between zinc oxide and carbon nanotubes, achieving the desired sensitivity. The existence of carbon nanotubes in the prepared samples was evaluated using Tauc calculations and UV-visible absorption spectroscopy. The results showed that samples containing carbon nanotubes had higher sensitivity and reversibility towards vapors compared to zinc oxide alone.
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Multidisciplinary
Han Jiang, Stuart Robertson, Shuibao Liang, Zhaoxia Zhou, Liguo Zhao, Changqing Liu
Summary: This study introduces a novel strategy for rapid transient liquid phase bonding in three-dimensional integrated circuits, which significantly accelerates the bonding process through the use of preformed nanocomposite interlayers. The template-assisted electrodeposition of copper nanowire array contributes to the efficiency and speed of this technique.
Article
Multidisciplinary Sciences
Femila Manoj, Laura W. Tai, Katelyn Sun Mi Wang, Thomas E. Kuhlman
Summary: The GENEWRITE system combines the site-specific targetable activity of Cas endonucleases with the reverse transcriptase activity of the ORF2p protein, enabling the insertion of large genetic constructs at precise locations. Despite off-target effects, successful insertion of large genetic payloads has been achieved in E. coli through proper payload design and co-expression of helper proteins.
SCIENTIFIC REPORTS
(2021)
Article
Engineering, Electrical & Electronic
S. Narasimman, L. Balakrishnan, Z. C. Alex
Summary: This study enhances the sensitivity and selectivity of ethanol sensors by functionalizing ZnO nanoflakes, providing a potential effective tool for ethanol detection.
IEEE SENSORS JOURNAL
(2023)
Review
Chemistry, Physical
Liguo Qin, Fagla Jules Mawignon, Mehboob Hussain, Nsilani Kouediatouka Ange, Shan Lu, Mahshid Hafezi, Guangneng Dong
Summary: Hydrothermal synthesis of ZnO nanostructures is an effective method for preparing UV sensors, with advantages such as economic cost, low-temperature process, and high yield production. The review summarizes the selective hydrothermal processes for ZnO structures, investigates the impact of key factors, and discusses the mechanisms of ZnO hydrothermal nanostructures for UV applications.
Article
Chemistry, Multidisciplinary
Xianfeng Zhang, Wenjie Du, Qian Li, Changpeng Lv
Summary: This study proposes precursor pyrolysis, ultrasonic exfoliation, hydrothermal, and high-temperature calcination methods to fabricate g-C3N4/ZnO composites with excellent gas sensing properties. The composition and structure of the composites were characterized, and it was found that 1% doping of g-C3N4 achieved the best sensing performance at 280 degrees C, with a response of 81.4 to 100 ppm ethanol. The sensor also exhibited fast response and recovery speeds, as well as good selectivity.