Article
Chemistry, Physical
Cristine Santos de Oliveira, Erico Teixeira Neto, Italo Odone Mazali
Summary: The development of CeO2-based nanomaterials for catalysis has significantly grown in the past decade, with applications such as the water-gas shift reaction (WGSR) showing higher catalytical activity when combined with noble metal nanoparticles. This study designed a material for the catalysis of the WGSR, optimizing Au nanoparticle size and maintenance during catalysis to prevent the formation of undesired side products, achieving stable catalytic activity even at higher temperatures.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Physical
Shilong Chen, Ali M. Abdel-Mageed, Ashlee Hauble, Tamao Ishida, Toru Murayama, Magdalena Parlinska-Wojtan, R. Juergen Behm
Summary: The study investigated the influence of increasing Au loading on the performance of Au/ZnO in methanol synthesis through CO2 reduction, revealing that increased Au loading led to larger Au particle size and a decrease in methanol formation rate, while increasing methanol selectivity.
APPLIED CATALYSIS A-GENERAL
(2021)
Article
Chemistry, Physical
Miao Xu, Kang Li, Shen Wang, Shengyu Zhou, Hulin Zhang, Hongbo Xu, Jiupeng Zhao, Yao Li
Summary: By designing a TiO2/Au/PB nanorod array, the stability and switching speed of Prussian blue in electrochromic applications can be improved. The designed structure increases reactive sites and conductivity, enhances ion storage capacity, and promotes charge transfer through localized surface plasmon resonance effect.
Article
Chemistry, Physical
Miao Xu, Kang Li, Shen Wang, Shengyu Zhou, Hulin Zhang, Hongbo Xu, Jiupeng Zhao, Yao Li
Summary: A TiO2/Au/PB nanorod array is designed to enhance the stability and electrochromic performance of Prussian blue, showing potential for electrochromic applications.
Article
Chemistry, Analytical
Baosheng Du, Meng Zhang, Jifei Ye, Diankai Wang, Jianhui Han, Tengfei Zhang
Summary: Novel optical gas-sensing materials were fabricated by hydrothermal synthesis and magnetron sputtering to develop Au nanoparticle (NP)-modified ZnO nanorod (NR) arrays on Si substrates. The optical performance of ZnO NR could be controlled by annealing temperature and Au sputtering time. The Au/ZnO samples exhibited significant variation in intensity of ultraviolet (UV) emission (at ~390 nm) in the photoluminescence (PL) spectra when exposed to trace amounts of oxygen. Based on this mechanism, ZnO NR-based oxygen gas sensing via PL spectra variation showed excellent performance with a wide linear detection range, high response value, and 1% oxygen content sensitivity detection limit at 225 degrees C. This outstanding optical oxygen-sensing performance can be attributed to the large surface area to volume ratio, high crystal quality, and high UV emission efficiency of the Au NP-modified ZnO NR arrays. Density functional theory (DFT) simulation confirmed that Au NPs modified the ZnO NR surface, causing a change in charge at the interface and the lowest adsorption energy for oxygen molecules in the Au/ZnO structure. These findings suggest that Au NP-modified ZnO NR have promising potential for high-performance optical gas-sensing applications.
Article
Nanoscience & Nanotechnology
Uri R. Gabinet, Chinedum O. Osuji
Summary: The article discusses a novel approach for creating arrays of vertically oriented plasmonic nanorods using templates formed by macromolecular self-assembly, enabling precise control of nanomaterial size and spacing to enhance optical properties. These arrays can be utilized for producing Au shell NRs for SERS sensors, showcasing potential for enhanced sensitivity.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Analytical
Dandan Men, Wenjuan Li, Ting Wu, Guihua Jiang, Honghua Zhang, Lifeng Hang, Ping Li, Hong Wang, Junhuai Xiang
Summary: The present study focuses on designing a sensor with excellent sensitivity, high stability, and low cost at room temperature for rapid and simple detection of iodine (I2) in liquid and gaseous phase. A two-dimensional Au@Ag nanoparticle ordered array was prepared using a template method combined with chemical reduction. The array exhibited plasmonic surface lattice resonances (PSLR) peak in the extinction spectrum, which changed with the reaction of the Ag shell with I2, enabling multi-mode detection of liquid and gaseous I2 without sophisticated instruments. The ordered array showed good uniformity and stability, making it suitable for detecting I2 in a large concentration region. The Au@Ag nanoparticle array also demonstrated high sensitivity to gaseous I2 at room temperature, with a detection limit reaching trace level (1 ppb), indicating great potential for real-world application.
SENSORS AND ACTUATORS B-CHEMICAL
(2024)
Article
Nanoscience & Nanotechnology
Cancan Bao, Rui Zhang, Yanxia Qiao, Xiaowei Cao, Fangyuan He, Wenli Hu, Ming Wei, Wenbo Lu
Summary: A simple electrochemical immunosensor based on three-dimensional Au nanoparticles anchored on a cobalt boride nanowire array (AuNPs/CoB NWA) electrode is developed for the detection of prostate-specific antigen (PSA). An innovative signal amplification strategy is proposed without using the second labeled antibody to enhance sensitivity of the immunosensor. The electrocatalytic reduction of Nile blue A (NBA) is amplified on AuNPs/CoB NWAs, allowing for the accurate detection of PSA in human serum samples with high sensitivity and fine linearity.
ACS APPLIED NANO MATERIALS
(2021)
Article
Nanoscience & Nanotechnology
Fang Xu, Wen Li, Shuai Sun, Aihua Zhong, Xuelan Cheng, Jidong Shi, Zeren Li, Jia Li, Wei Zhang, Xiaohu Wang, Yujie Ma, Aaron Ho-Pui Ho
Summary: This study developed a temperature-tuned triselectivity sensor based on Au NP-ZnO NTPs, which exhibited enhanced selectivity for different gases at different temperatures. The sensor showed enhanced selectivity for formaldehyde at temperatures below 200°C, ethanol at temperatures between 200 and 340°C, and acetone at temperatures above 400°C. Au NP decoration improved the response magnitude and lowered the optimal detection temperature of the sensor. This work demonstrates the efficient approach of Au NP decoration in improving the performance of temperature-tunable gas sensors based on semiconductors.
ACS APPLIED NANO MATERIALS
(2023)
Article
Biophysics
Yingzhi Zhang, Jiayuan Fan, Jing Zhao, Zhangrun Xu
Summary: In this study, a metal-enhanced fluorescence (MEF) biochip based on a shell-isolated Au@MnO2 nanoparticle array was designed for the simple and sensitive assay of exosomes. The conversion of exosome signals to DNA signals was achieved through a chain displacement reaction, effectively avoiding steric hindrance on MEF. The MEF biochip based on the shell-isolated Au@MnO2 nanoparticle array achieved a second signal amplification in a simple way. The strategy displayed high sensitivity towards exosomes and was able to distinguish breast cancer patients from healthy individuals.
BIOSENSORS & BIOELECTRONICS
(2022)
Article
Optics
Mahla Ghaemi-moghadam, Abdollah Hasanzadeh, Ali Rahmati
Summary: Well-aligned zinc oxide nanorods (ZnO NRs) array are grown on seeded substrates at low temperatures using a wet chemical method. Gold nanosheets are deposited around the ZnO NRs array at a glancing angle, forming a three-dimensionally plasmonic hetero-nanostructure (HNS). The localized surface plasmon resonance (LSPR) is tuned and blue-shifted with increasing thickness of the gold nanosheet. The ZnO NRs-Au array HNS exhibits high nonlinear refractive index, nonlinear optical absorption coefficient, and photocurrent enhancement.
OPTICS AND LASERS IN ENGINEERING
(2021)
Article
Chemistry, Physical
Santanu Podder, Bablu Basumatary, Deepshikha Gogoi, Jyotisman Bora, Arup R. Pal
Summary: This study presents the fabrication of a highly responsive ultrafast UV photodetector utilizing combined photovoltaic and photo-induced pyroelectric effect. The device architecture includes a layered configuration with gold nanoparticles (Au NPs) and zinc oxide (ZnO) in the photoactive layer, leading to enhanced photocurrent generation in the UV region. The fabricated device demonstrates impressive photoresponsivity, detectivity, and ultrafast response time, making it a promising option for UV detection applications.
APPLIED SURFACE SCIENCE
(2021)
Article
Biochemistry & Molecular Biology
Ye Tian, Qi Wang, Zhijian Peng, Shundong Guan, Xiuli Fu
Summary: A novel product consisting of a homogeneous tin oxide nanowall array with abundant oxygen deficiencies and partial Ni-Sn alloying onto a Ni foam substrate was successfully prepared using a facile solvothermal synthesis process. This product showed outstanding electrochemical properties and good cycling performance as an integrated anode for supercapacitors, with the potential to be utilized in other high-performance metal oxide electrodes.
Article
Chemistry, Analytical
Yan Zhai, Xiaoyu Zhao, Zhiyuan Ma, Xiaoyu Guo, Ying Wen, Haifeng Yang
Summary: Au nanoparticles were decorated on the surface of Co-doped ZnO to obtain a novel semiconductor-metal composite. The Co-400-ZnO/Au substrate enhanced the separation efficiency of electrons and holes in a semiconductor under visible laser exposure, as well as the localized surface plasmon resonance of the Au nanoparticles. The Co doping also generated ZnO quantum dots, strengthening the semiconductor metal interaction and leading to improved SERS performance of the Co-400-ZnO/Au composite.
Article
Biochemistry & Molecular Biology
Mariana Busila, Viorica Musat, Petrica Alexandru, Cosmin Romanitan, Oana Brincoveanu, Vasilica Tucureanu, Iuliana Mihalache, Alina-Viorica Iancu, Violeta Dediu
Summary: The use of a combination of nanoparticles as antimicrobial agents and efficient removal of persistent pollutants from wastewater is an important strategy. This study synthesized ZnO/Au and ZnO/Ag nanocomposites, analyzed their structure and morphology, and evaluated their antimicrobial properties and photocatalytic activity.
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
(2023)
Article
Chemistry, Multidisciplinary
Jinshui Miao, Bo Song, Zhihao Xu, Le Cai, Suoming Zhang, Lixin Dong, Chuan Wang
Article
Multidisciplinary Sciences
Wenbin Zhou, Qingxia Fan, Qiang Zhang, Le Cai, Kewei Li, Xiaogang Gu, Feng Yang, Nan Zhang, Yanchun Wang, Huaping Liu, Weiya Zhou, Sishen Xie
NATURE COMMUNICATIONS
(2017)
Article
Nanoscience & Nanotechnology
Suoming Zhang, Le Cai, Wei Li, Jinshui Miao, Tongyu Wang, Junghoon Yeom, Nelson Sepulveda, Chuan Wang
ADVANCED ELECTRONIC MATERIALS
(2017)
Article
Materials Science, Multidisciplinary
Le Cai, Suoming Zhang, Yiheng Zhang, Junqiang Li, Jinshui Miao, Qifan Wang, Zhibin Yu, Chuan Wang
ADVANCED MATERIALS TECHNOLOGIES
(2018)
Article
Chemistry, Multidisciplinary
Min Yu, Haochuan Wan, Le Cai, Jinshui Miao, Suoming Zhang, Chuan Wang
Article
Nanoscience & Nanotechnology
Xinyang Zhao, Min Yu, Le Cai, Jiale Liu, Jingxi Wang, Haochuan Wan, Jinyan Wang, Chuan Wang, Yunyi Fu
Article
Engineering, Electrical & Electronic
Guangwei Xu, Le Cai, Zhengxu Wang, Quantan Wu, Congyan Lu, Zhiyu Zhao, Yepin Zhao, Di Geng, Ling Li, Ming Liu, Yang Yang
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2019)
Article
Multidisciplinary Sciences
Alex Burton, Sofian N. Obaid, Abraham Vazquez-Guardado, Matthew B. Schmit, Tucker Stuart, Le Cai, Zhiyuan Chen, Irawati Kandela, Chad R. Haney, Emily A. Waters, Haijiang Cai, John A. Rogers, Luyao Lu, Philipp Gutruf
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2020)
Article
Chemistry, Multidisciplinary
Yepin Zhao, Zhengxu Wang, Guangwei Xu, Le Cai, Tae-Hee Han, Anni Zhang, Quantan Wu, Rui Wang, Tianyi Huang, Pei Cheng, Sheng-Yung Chang, Daqian Bao, Zhiyu Zhao, Minhuan Wang, Yijie Huang, Yang Yang
ADVANCED FUNCTIONAL MATERIALS
(2020)
Article
Biophysics
Tucker Stuart, Le Cai, Alex Burton, Philipp Gutruf
Summary: Recent progress in biosensors has greatly expanded capabilities in research, diagnostics, and treatment, with machine learning and artificial intelligence playing a significant role. The importance of integrated and chronic sensing solutions has become increasingly evident, emphasizing the need for wireless and battery-free platforms for continuous biosignal collection.
BIOSENSORS & BIOELECTRONICS
(2021)
Review
Engineering, Biomedical
Sang Min Won, Le Cai, Philipp Gutruf, John A. Rogers
Summary: This Review Article discusses recent progress in the development of miniaturized and ultralightweight devices for neuroengineering, which are wireless, battery-free, and fully implantable. These devices can restrict natural motions and prevent social interactions in animal models, limiting their utility in behavioural neuroscience research. However, advanced neural interfaces with optical, electrical, or fluidic functionality have emerged, capable of combining recording and stimulation modalities for closed-loop applications in basic studies or the treatment of abnormal physiological processes.
NATURE BIOMEDICAL ENGINEERING
(2023)
Article
Engineering, Electrical & Electronic
Zhengxu Wang, Guangwei Xu, Zhiyu Zhao, Le Cai, Quantan Wu, Pei Cheng, Yepin Zhao, Jingjing Xue, Rui Wang, Chong Liu, Yang Yang
ACS APPLIED ELECTRONIC MATERIALS
(2019)
Article
Chemistry, Physical
Rui Wang, Jingjing Xue, Lei Meng, Jin-Wook Lee, Zipeng Zhao, Pengyu Sun, Le Cai, Tianyi Huang, Zhengxu Wang, Zhao-Kui Wang, Yu Duan, Jonathan Lee Yang, Shaun Tan, Yonghai Yuan, Yu Huang, Yang Yang
Article
Physics, Applied
Suoming Zhang, Le Cai, Tongyu Wang, Jinshui Miao, Nelson Sepulveda, Chuan Wang
APPLIED PHYSICS LETTERS
(2017)
Article
Nanoscience & Nanotechnology
Jinshui Miao, Le Cai, Suoming Zhang, Junghyo Nah, Junghoon Yeom, Chuan Wang
ACS APPLIED MATERIALS & INTERFACES
(2017)