Article
Nanoscience & Nanotechnology
Zhilin Liu, Xiaoming Yuan, Shiliang Wang, Sha Liu, Hark Hoe Tan, Chennupati Jagadish
Summary: This study investigates the mechanical properties and fracture mechanisms of GaAs nanowires under tensile stress, revealing that they deform elastically overall until sudden brittle fracture at 3.79% strain. Experimental results show fracture strength and elastic modulus of 4.0 and 109.5 GPa, respectively, which are much smaller than previous compression-based reports.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2021)
Article
Chemistry, Multidisciplinary
Juyoung Kim, Julien O. Fadonougbo, Jee-Hwan Bae, Min Kyung Cho, Jaeyoung Hong, Young Whan Cho, Jong Wook Roh, Gyeung Ho Kim, Jun Hyun Han, Young-Su Lee, Jung Young Cho, Kyu Hyoung Lee, Jin-Yoo Suh, Dong Won Chun
Summary: This study reports real-time observations of the dehydrogenation of a Mg2FeH6-MgH2 composite using in situ transmission electron microscopy (TEM) with advanced spatial and temporal resolution. Through careful control and systematic variations of the reaction temperature and electron dose rate, the characteristic decomposition of Mg2FeH6 into Mg and Fe on the nanometer scale is visualized. The formation and growth of nanostructured Fe clusters in Mg metal during dehydrogenation are verified, and the desorption kinetics of the two coexisting phases are separately evaluated. These findings provide useful guidelines for designing hydrogen sorption conditions and improving solid-state hydrogen storage systems.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Xueqing Wang, Fanglan Yao, Pengcheng Xu, Ming Li, Haitao Yu, Xinxin Li
Summary: Based on real-time observations of ZnO nanowires sulfurization processes in SO2 atmosphere using in situ TEM, a quantitative structure-activity relationship (QSAR) is revealed. The ZnO-100 nm nanowires gradually transform into core-shell nanostructures, while sparse nanoparticles are observed on the surface of ZnO-500 nm sample, indicating weak solid-gas interaction with SO2. The QSAR model is validated with adsorption heat data and aberration-corrected TEM characterization, leading to exploration of adsorbing/sensing applications of ZnO nanomaterials.
Article
Materials Science, Multidisciplinary
Dewang Cui, Ziqi Cao, Yifan Ding, Yipeng Li, Guang Ran
Summary: In this study, the effect of two dose rates on the characteristics and evolution of dislocation loops in palladium during 30 keV H2+ irradiation was investigated using transmission electron microscopy. The dose rate significantly influenced the nucleation and growth rates, types, irradiation hardening, and total damage of dislocation loops. It was found that a high dose rate resulted in high loop density, small average loop size, low loop growth rate, and low irradiation hardening. Additionally, high dose rate promoted the formation of perfect dislocation loops.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2023)
Article
Chemistry, Physical
Zichun Wang, Dan Wang, Ang Li, Lizhuo Wang, Xiaodong Han, Yijiao Jiang, Jianfeng Chen, Jun Huang
Summary: Metal nanowires, specifically Al nanowires, can be fabricated using Ni-catalyzed reduction of Al2O3 substrates. In this study, the growth dynamics of Al nanowires on Ni/Al2O3 were investigated using in situ transmission electron microscopy. The effects of alumina structures, compositions, and growth temperature were also examined. The findings provide insights into the dynamic change and catalytic performance of Ni/Al2O3 under working conditions, with potential applications beyond Al nanowire growth.
Article
Chemistry, Physical
X. Y. Liu, Y. P. Li, G. Ran, Q. Han, P. H. Chen
Summary: This study investigated the microstructural evolution in palladium (Pd) through in situ irradiation experiments, revealing significant effects of temperature, irradiation dose, and sample thickness on the morphology and density of dislocation loops, bubbles, and bubble-loop complexes. Hydrogen resulted in the formation of larger bubbles, while the unfaulting transition of loops led to bubble redistribution. The difference in growth behavior between faulted and perfect loops was discussed, suggesting a critical transform loop size for Pd.
MATERIALS TODAY ENERGY
(2021)
Article
Engineering, Chemical
Garam Lee, Justin Easa, Renxi Jin, Austin Booth, Casey P. O'Brien
Summary: By installing a photoelastic modulator in the infrared beam path and developing a new electroless plating method for synthesis of optically smooth Pd thin film membranes, the sensitivity to detection of surface-adsorbed species has been significantly enhanced, representing a significant advancement in operando membrane characterization.
JOURNAL OF MEMBRANE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Yu Zhang, Shijun Wang, Pingping Tang, Zhenfang Zhao, Zhiping Xu, Zhong-Zhen Yu, Hao-Bin Zhang
Summary: This study demonstrates a chemical-structure-engineering strategy to achieve highly aligned graphene oxide (GO) films with improved mechanical properties. The favorable assembly pattern of modified GO sheets is attributed to reduced interfacial friction on the atomic scale, allowing for freer configuration adjustment during the assembly process.
Article
Nanoscience & Nanotechnology
A. C. Meng, R. Serra-Maia, K-B Low, H. Lang, E. A. Stach
Summary: The effect of the driving force on the growth of palladium nanoparticles was systematically investigated through comparative analysis of different reduction methods. Ascorbic acid was found to promote the formation of smaller, more tightly spaced palladium nanoparticles and reduce dendritic growth. Real-time observation of the nanoparticle formation process was achieved through electrochemical water splitting.
MATERIALS TODAY NANO
(2023)
Article
Nanoscience & Nanotechnology
Aidan P. Conlan, Minh Anh Luong, Pascal Gentile, Grigore Moldovan, Martien Den Hertog, Eva Monroy, David Cooper
Summary: In this study, the structure and electronic properties of Al/SiGe and Al/Si-rich/SiGe axial nanowire heterostructures were characterized using electron beam induced current (EBIC) in a scanning transmission electron microscope. The two heterostructures were found to behave as Schottky contacts with different barrier heights, and the intrinsic semiconductor doping was determined to be n-type. Additionally, it was observed that the silicon-rich double interface presented a lower barrier height compared to the atomically sharp SiGe/Al interface. The Si-rich region delayed the propagation of the depletion region and showed a reduced free carrier diffusion length compared to the SiGe nanowire. These findings demonstrate the significance of scanning transmission electron microscopy EBIC as a powerful method for mapping and quantifying electric fields in micrometer- and nanometer-scale devices.
Article
Chemistry, Physical
Yifan Zheng, Zhi Zhang, Weifeng Liu, Yonghui Wu, Xiutao Fu, Luying Li, Jun Su, Yihua Gao
Summary: This study investigates the electrochemical and mechanical performance of Sb2O3 nanobelts in sodium-ion batteries. It reveals the ultrahigh sodiation speed and multiple-step sodiation reaction of Sb2O3 nanobelts. The orientation and composition of the nanobelts also have a significant impact on their expansion ratio. Additionally, the sodiated Sb2O3 nanobelts exhibit improved toughness and flexibility compared to the pristine ones.
Article
Chemistry, Inorganic & Nuclear
Qiuxia Wang, Tong Li, Suxia Yan, Wenjie Zhang, Guoai Lv, Hui Xu, Huaming Li, Yong Wang, Junfeng Liu
Summary: In this study, an integrated electrolysis system was developed using PdSbBi/C as an electrocatalyst to replace the sluggish oxygen evolution reaction (OER) in water electrolysis with a thermodynamically favorable ethanol oxidation reaction (EOR), resulting in efficient energy production and coproduction of acetic acid. It was found that tuning the composition of PdSbBi nanoparticles significantly enhanced the activity and stability of the EOR process.
INORGANIC CHEMISTRY
(2022)
Article
Multidisciplinary Sciences
Martina Alunni Cardinali, Laura Cartechini, Marco Paolantoni, Costanza Miliani, Daniele Fioretto, Luciano Pensabene Buemi, Lucia Comez, Francesca Rosi
Summary: Correlative Brillouin and Raman microspectroscopy (BRaMS) is used to monitor the chemical and physical changes of linseed oil during polymerization. The results provide important insights into the processes leading to the conversion of a fluid binder into a dry adhering film.
Article
Chemistry, Analytical
Yingying Tian, Lingling Du, Xiaxia Xing, Chen Wang, Dongliang Feng, Zhenxu Li, Dachi Yang
Summary: A surface-broken nanowire (PdO@Pd NWs) with palladium (Pd) as the core and PdO as the shell has been developed for stable hydrogen sensing at room temperature. The PdO@Pd NWs show excellent cycling stability and can sense 1 v/v% and 0.5 v/v% H2 at room temperature and a relative humidity of -75%, with a fast response time of 5 s and a detection limit of 10 ppm.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Nanoscience & Nanotechnology
Abhishek Kumar, Thomas Thundat, Mark T. Swihart
Summary: One-dimensional nanomaterials are widely studied for gas-sensing applications due to their high surface-to-volume ratio and efficient electron transport pathways. In this study, ultrathin PdNWs were synthesized using colloidal solvothermal synthesis and a sensor with fast response, recovery times, stability, and high selectivity for H-2 was fabricated.
ACS APPLIED NANO MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Lingling Du, Mengqi Yuan, Hongrui Wei, Xiaxia Xing, Dongliang Feng, Yunlong Liao, Haijun Chen, Dachi Yang
ACS APPLIED MATERIALS & INTERFACES
(2019)
Article
Chemistry, Physical
Xiaxia Xing, Zhengyou Zhu, Lingling Du, Dongliang Feng, Jian Chen, Shun Li, Dachi Yang
APPLIED SURFACE SCIENCE
(2020)
Article
Chemistry, Multidisciplinary
Jian Chen, Dongliang Feng, Chen Wang, Xiaxia Xing, Lingling Du, Zhengyou Zhu, Xiaohu Huang, Dachi Yang
Article
Nanoscience & Nanotechnology
Jose A. Hernandez, Luis F. Fonseca, Michael T. Pettes, Miguel Jose-Yacaman
Summary: Antimony selenide (Sb2Se3) hexagonal nanotubes (HNT) exhibit moderate electrical conductivity and a reasonable Seebeck coefficient of around 430 μV K-1 at 370 K. Compared to bulk materials, the electrical conductivity of Sb2Se3 HNT is about 5 orders of magnitude higher, while its thermal conductivity is only half. The calculated figure of merit (ZT) at room temperature is the highest reported in 1D structures of antimony selenide.
Article
Materials Science, Multidisciplinary
Dong-Liang Feng, Zheng-You Zhu, Ling-Ling Du, Xia-Xia Xing, Chen Wang, Jian Chen, Yong-Tao Tian, Da-Chi Yang
Summary: Gas sensors utilizing WO3 nanoparticles decorated with Ag and Pt bimetals exhibit enhanced response to acetone, with faster recovery time compared to pristine WO3 nanoparticles. The improved sensing performance is attributed to the chemical and electronic sensitization of Ag and Pt, which increases adsorbed oxygen species and speeds up the reaction process. This strategy may have potential applications for gas sensors using other sensing materials.
Review
Chemistry, Physical
Mingjie Wu, Gaixia Zhang, Lei Du, Dachi Yang, Huaming Yang, Shuhui Sun
Summary: The challenges in developing all-solid-state ZABs include designing suitable bifunctional air-electrodes and developing robust electrolyte membranes with high ionic conductivity. Various defect engineering strategies for tuning the ORR/OER catalysts and recent progress in designing electrolyte membranes are discussed in this review.
Article
Chemistry, Multidisciplinary
Dongliang Feng, Lingling Du, Xiaxia Xing, Chen Wang, Jian Chen, Zhengyou Zhu, Yongtao Tian, Dachi Yang
Summary: A highly sensitive and selective NiO/WO3 nanoparticles sensor has been developed for the detection of hydrogen sulfide (H2S), showing superior performance compared to conventional sensors and potential for future medical applications.
Article
Engineering, Environmental
Xiaxia Xing, Zhengyou Zhu, Dongliang Feng, Lingling Du, Dachi Yang
Summary: In this study, Li/WO3 NFs are found to exhibit screening behavior in suppressing the response from interfering gases while elevating the H2S sensing response. The H2S response of Li/WO3 NFs sensor prototype is three times higher than that of pristine WO3 ones, with a detection limit as low as 100 ppb.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Chen Wang, Lingling Du, Xiaxia Xing, Dongliang Feng, Yingying Tian, Zhenxu Li, Xinhua Zhao, Dachi Yang
Summary: This study introduces a newly emerged strategy for indirect monitoring of Listeria monocytogenes (LM) using a gas sensor that can detect the bacterial metabolite 3-hydroxy-2-butanone (3H-2B). The developed highly selective and sensitive 3H-2B sensors, composed of zinc oxide nanorods decorated with cobaltosic oxide nanoparticles (ZnO NRs/Co3O4 NPs), exhibit ultrahigh sensitivity and excellent stability, enabling detection as low as 10 ppb 3H-2B. The outstanding sensing performance is attributed to the modulated electron depletion layer and abundant gas diffusion pathways, showing potential for real-time detection of 3H-2B biomarker.
Article
Chemistry, Analytical
Xiaxia Xing, Lingling Du, Dongliang Feng, Chen Wang, Yingying Tian, Zhenxu Li, Huigang Liu, Dachi Yang
Summary: High concentration of gaseous ammonia is harmful to human organs, but low-concentration ammonia generated from human metabolism can be used as a biomarker for diagnosing kidney disease through exhaled breath. Wearable ammonia sensors integrated into clothing for real-time monitoring are highly desired. The development of twistable and tailorable nanocomposites textile for NH3 sensing shows enhanced response, high stability, and excellent interfering selectivity.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Chemistry, Analytical
Xinyu Wang, Lingling Du, Lina Cheng, Shoupei Zhai, Chao Zhang, Wen Wang, Yong Liang, Dachi Yang, Qiang Chen, Gang Lei
Summary: In this study, a Pd/Ni nanowires film-coated surface acoustic wave (SAW) device was developed for fast response hydrogen sensing. The experimental results demonstrate that the sensor has fast response time, high sensitivity, and low detection limit at room temperature, as well as excellent selectivity and stability.
SENSORS AND ACTUATORS B-CHEMICAL
(2022)
Article
Nanoscience & Nanotechnology
Soraya Y. Flores, Jean Gonzalez-Espiet, Juan Cintron, Nerida De Jesus Villanueva, Fernando E. Camino, Kim Kisslinger, Dalice M. Pinero Cruz, Ruben Diaz Rivera, Luis F. Fonseca
Summary: This study presents a single-step production method for gas sensing devices and demonstrates their application for the detection of NH3 and NO2 at ppb levels. The sensing materials used in this study have short response and recovery times, making them suitable for long-term gas monitoring in environmental studies.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Zhengyou Zhu, Xiaxia Xing, Dongliang Feng, Zhenxu Li, Yingying Tian, Dachi Yang
Summary: In this study, a hydrogen sensor based on palladium nanoparticles decorated on tungsten trioxide nanoparticles has been developed, which shows fast response time, high sensitivity, and selectivity towards hydrogen detection at a working temperature of 50 degrees Celsius. This advanced hydrogen sensing technology provides a solid experimental basis for future smart detection of hydrogen leakages in the hydrogen economy.
Article
Chemistry, Physical
Xiaxia Xing, Lingling Du, Dongliang Feng, Chen Wang, Mingshui Yao, Xiaohu Huang, Shixi Zhang, Dachi Yang
JOURNAL OF MATERIALS CHEMISTRY A
(2020)
Article
Engineering, Environmental
Lingling Du, Dongliang Feng, Xiaxia Xing, Chen Wang, Gerasimos S. Armatas, Dachi Yang
CHEMICAL ENGINEERING JOURNAL
(2020)
