Article
Nanoscience & Nanotechnology
Yang Wu, Wenhu Yang, Hailong Zhang, Haidi Xu, Yi Jiao, Lin Zhong, Jianli Wang, Yaoqiang Chen
Summary: This study improves the performance of Pd/Y2O3-ZrO2 catalyst by constructing silicate patches on the support surface. This modification optimizes palladium chemistry, enhances CH4 conversion, reduces surface oxygen vacancies, and inhibits hydroxyl accumulation.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Multidisciplinary
B. B. Bokhonov, O. A. Logutenko, A. M. Vorobyov, T. A. Borisenko, A. I. Titkov
Summary: This study reports a simple and cost-effective method to synthesize Ni@Pd nanowires with a core-shell structure via galvanic replacement reaction, enabling large-scale production.
Article
Chemistry, Multidisciplinary
Austin D. Marchese, Andrew G. Durant, Cian M. Reid, Clara Jans, Ramon Arora, Mark Lautens
Summary: A Pd(0)/blue light catalyzed carboiodination reaction has been reported, which generates a variety of iodinated hetero- and carbocycles. The reaction system is simple and stable, and shows good tolerance towards sensitive functional groups, delivering products in high yields. Experimental evidence supports the reversible C-I bond formation via a single electron mechanism.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Engineering, Environmental
Limei Tian, Haixu Dou, Yanlong Shao, Yaozhen Yi, Xue Fu, Jie Zhao, Yong Fan, Weihua Ming, Luquan Ren
Summary: A silicone-oil-infused magnetic porous polydimethylsiloxane (SMPP) surface with magnetically tunable super-wetting behaviors is reported. This surface allows for precise control of droplet adhesion by manipulating the seepage and absorption of silicone oil using a magnetic field. It can be used for droplet manipulation, microfluidic microreactors, and antigravity transport devices.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Engineering, Environmental
Sung Hwan Cho, Jun Min Suh, Beomgyun Jeong, Tae Hyung Lee, Kyoung Soon Choi, Tae Hoon Eom, Taehoon Kim, Ho Won Jang
Summary: In this study, gasochromic H2 sensors based on Pd nanoparticle-decorated amorphous WO3 film were proposed. These sensors exhibited rapid and highly reversible operation, allowing for the visualization of H2 detection through color change of the film and having the fastest recovery time compared to previously reported gasochromic H2 sensors.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Chemistry, Inorganic & Nuclear
Yu-Zhen Wang, Ping-Ping Shi, Ke Xu, Lei He, Xin Meng, Qiong Ye
Summary: This study highlights the advantages of introducing functional groups into phase transition materials and presents a new approach to design multifunctional materials. The one-dimensional coordination polymer demonstrated reversible phase transition and adsorption of metal ions, showcasing potential applications in monitoring metal adsorption through measurements of SHG and dielectric switching.
INORGANIC CHEMISTRY FRONTIERS
(2021)
Article
Nanoscience & Nanotechnology
Giuseppe Abbondanza, Andrea Grespi, Alfred Larsson, Dmitry Dzhigaev, Lorena Glatthaar, Tim Weber, Malte Blankenburg, Zoltan Hegedues, Ulrich Lienert, Herbert Over, Gary S. Harlow, Edvin Lundgren
Summary: We investigated the structural evolution of electrochemically fabricated Pd nanowires in situ using various techniques. Our study demonstrated the formation of beta-phase Pd hydride during the bottom-up growth of the nanowires and its phase transition to alpha-phase Pd after electrodeposition was suspended. We also found that grain coalescence hindered the incorporation of hydrogen in the Pd unit cell.
Article
Chemistry, Physical
Nahiane Pipaon Fernandez, Gregory Gaube, Kyla J. Woelk, Mathias Burns, Damian P. Hruszkewycz, David C. Leitch
Summary: We present a new method for direct C-C bond formation using tandem C-O/C-H activation mediated by palladium catalyst. This approach allows for base-free direct C-H alkenylation by combining C-O oxidative addition at enol pivalates and concerted metalation-deprotonation of functionalized heterocycles. Mechanistic studies show that C-O oxidative addition is reversible and C-H activation occurs directly from the Pd(II) C-O oxidative addition product. In situ P-31 NMR spectroscopy reveals that (Cy3P)(2)Pd-(alkenyl)(OPiv) species is the predominant catalyst resting state during the reactions.
Article
Chemistry, Physical
Wei Xiong, Jun Wang, Yunhao Wang, Jianqiang Wang, Chen Wang, Gurong Shen, Meiqing Shen
Summary: A series of xP theta-Al2O3 supports modified with different amounts of phosphorus element were prepared for methane catalytic combustion. The hydrophobicity of xP theta-Al2O3 changed with the increase of phosphorus content, affecting the activity of methane catalytic combustion. Phosphorus incorporation replaced hydroxyl groups on the surface of Al2O3 with phosphates, altering the hydroxyl group density of the support. This study provides guidance for designing methane catalytic combustion catalysts resistant to water inhibition.
Article
Nanoscience & Nanotechnology
Yu Shao, Hua Chun Zeng
Summary: The formation of metallic palladium nanoclusters hinders their effective utilization in Suzuki-Miyaura and other cross-coupling reactions. Reversibility of shuttling between oxidative-state precatalysts and metallic-state acting catalysts is crucial in designing Pd-based nanocatalysts. 3D copper-organosilicate nanowire networks derived from 3-aminopropyl trimethoxysilane precursors have been proven effective as a reversible Pd(II) reservoir for Suzuki coupling reactions, showing excellent reactivity, stability, and recyclability.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Baran Sarac, Yurii P. Ivanov, Tolga Karazehir, Marlene Muehlbacher, A. Sezai Sarac, A. Lindsay Greer, Jurgen Eckert
Summary: The multilayer amorphous and crystalline Pd-Si based nanosheets demonstrate exceptionally high hydrogen storage capabilities when stacked in the right order, offering potential for enhanced hydrogen storage and production through smart design applications.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Multidisciplinary
Daigo Hayashi, Tomohiro Tsuda, Ryo Shintani
Summary: A palladium-catalyzed skeletal rearrangement has been developed to synthesize highly fused tetrahydrophenanthrosilole derivatives via bond exchange. The reaction conditions can be tuned to produce different products, fused dihydrodibenzosilepin derivatives.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Materials Science, Multidisciplinary
Stav Nisany, Dan Mordehai
Summary: In this study, a model is developed to predict the strength distribution in nucleation-controlled plasticity with multiple nucleation site types. Molecular dynamics simulations on Pd nanowires reveal temperature-dependent nucleation probabilities. The distribution of nucleation strain is found to approximate a normal distribution under constant strain rate. Activation entropy is shown to have negligible contribution. The free-energy barriers follow a power-law with strain, indicating nonlinear elastic deformation of the nanowires. This model can be extended to more complex scenarios, such as rough surfaces with a distribution of nucleation sites under different conditions.
Article
Chemistry, Physical
Saurabh Ailawar, Anagha Hunoor, Dishari Basu, Benjamin Rudzinski, Laurence Burel, Jean-Marc M. Millet, Jeffrey T. Miller, Paul L. Edmiston, Umit S. Ozkan
Summary: In this study, the role of swellability and hydrophobicity of swellable organically modified silica (SOMS) in protecting palladium (Pd) during hydrodechlorination (HDC) of trichloroethylene (TCE) from deactivation by hydrochloric acid (HCl) is investigated. The results show that the extent of surface derivatization of SOMS directly affects its hydrophobicity, swellability, and surface area, which in turn influences the particle size, location, and atomic environment of Pd after impregnation. The study highlights the importance of hydrophobicity and swellability in obtaining high resistance to HCl during the HDC of TCE process.
JOURNAL OF CATALYSIS
(2022)
Article
Physics, Multidisciplinary
Jose A. Jimenez
Summary: This Letter reports on the spectroscopic properties of glasses melted with PdO and Si as reductant for Pd nanoparticles (NPs) inclusion and their impact on the photoluminescence (PL) of a rare-earth. Barium-phosphate glasses doped with 0.3 and 0.5 mol% PdO and/or Si were characterized and their effect on Sm3+ PL was investigated. The PdO/Si co-doped glasses exhibited the disappearance of Pd2+ absorption band and increased absorption background attributed to light scattering by Pd NPs.
Article
Chemistry, Multidisciplinary
Mingyu Sang, Kyowon Kang, Yue Zhang, Haozhe Zhang, Kiho Kim, Myeongki Cho, Jongwoon Shin, Jung-Hoon Hong, Taemin Kim, Shin Kyu Lee, Woon-Hong Yeo, Jung Woo Lee, Taeyoon Lee, Baoxing Xu, Ki Jun Yu
Summary: This study introduces a new type of ultrasensitive and stretchable gold-doped silicon nanomembrane epidermal temperature sensor array, which shows high thermal sensitivity and scalability for continuous monitoring of body temperature and respiration rate. The technology has the potential for precision diagnosis and disease management.
ADVANCED MATERIALS
(2022)
Article
Multidisciplinary Sciences
Yusheng Lei, Yuheng Li, Chengchangfeng Lu, Qizhang Yan, Yilei Wu, Finn Babbe, Huaxin Gong, Song Zhang, Jiayun Zhou, Ruotao Wang, Ruiqi Zhang, Yimu Chen, Hsinhan Tsai, Yue Gu, Hongjie Hu, Yu-Hwa Lo, Wanyi Nie, Taeyoon Lee, Jian Luo, Kesong Yang, Kyung-In Jang, Sheng Xu
Summary: Compared with 3D perovskites, low-dimensional metal halide perovskites have shown promising stability and electrical performance. However, their unique multiple-quantum-well structure limits the device efficiencies. In this study, a superlattice structure was fabricated using chemical epitaxy, enabling efficient carrier transport in three dimensions and improving the performance of solar cells.
Article
Engineering, Biomedical
Kijun Park, Seunghoi Kim, Yejin Jo, Jae Park, Inwoo Kim, Sooyoung Hwang, Yeontaek Lee, So Yeon Kim, Jungmok Seo
Summary: Implantable biomedical devices need a durable surface with anti-biofouling, low friction, and mechanical strength for better performance and longevity. However, there is currently no method that can provide uniform and effective coatings for medical devices with complex shapes and materials to prevent immune-related side effects and thrombosis when interacting with biological tissues.
BIOACTIVE MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chihyeong Won, Ui-Jin Jeong, Sanghyeon Lee, Minkyu Lee, Chaebeen Kwon, Sungjoon Cho, Kukro Yoon, Seungmin Lee, Dongwon Chun, Il-Joo Cho, Taeyoon Lee
Summary: A novel fiber neural probe with excellent electrical properties and flexibility comparable to brain tissue is proposed in this study, showing stable long-term in vivo electrophysiological signal recordings and reduced foreign body responses. This innovative approach provides a new paradigm for long-term recording in the fields of neuroscience and engineering.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Seungmin Lee, Sanghyeon Lee, Minkyu Lee, Sung Min Rho, Hyung Tae Kim, Chihyeong Won, Kukro Yoon, Chaebeen Kwon, Juyoung Kim, Geun Chul Park, Jun Hyung Lim, Joon Seok Park, Woobin Kwon, Young-Bae Park, Dong Won Chun, Hyun Jae Kim, Taeyoon Lee
Summary: This study demonstrates that tailoring the self-assembled monolayer (SAM) using the chemical coupling method enhances the electrical and mechanical properties of amorphous indium-gallium-zinc oxide (a-IGZO) thin-film transistors (TFTs).
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Minkyu Lee, Sanghyeon Lee, Myoungsub Kim, Seungmin Lee, Chihyeong Won, Taehoon Kim, Chaebeen Kwon, Kukro Yoon, Jinhan Lee, Hyungjun Kim, Taeyoon Lee
Summary: 3D cross-point memory arrays are a promising solution for future memory architecture due to their cost efficiency and high density. This study introduces a new type of Ge1-xSx film as an ovonic threshold switching (OTS) selector, which exhibits low leakage current and high thermal stability. By analyzing devices with different compositions, the mechanism and electrical characteristics of the devices are studied. This innovative research lays the foundation for enabling 3D cross-point memory.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Chemistry, Analytical
Yu-Shih Chen, Chun-Hao Huang, Ping-Ching Pai, Jungmok Seo, Kin Fong Lei
Summary: Electrical impedance biosensors, embedded with microfluidic technologies, have the potential to greatly improve sensitivity, reduce reagent consumption, and shorten analysis time. Microfluidics-enabled automation enhances the reliability and efficiency of analyses. The integration of electrical impedance biosensors with microfluidic systems enables the development of portable and user-friendly devices.
Article
Nanoscience & Nanotechnology
Kukro Yoon, Sanghyeon Lee, Donghun Shim, Minkyu Lee, Sungjoon Cho, Chaebeen Kwon, Chihyeong Won, Jinhan Lee, Han Hee Jung, Seungmin Lee, Kyung-In Jang, Jaehong Lee, Taeyoon Lee
Summary: A facile chemical process was used to fabricate highly conductive buckled shells by densely distributing Ag nanoparticles in polyurethane, resulting in strain-insensitive stretchable fiber conductors. These buckled AgNPs/PU fibers showed stable and reliable electrical responses, high electrical conductivity, and quality factor. pH sensors based on these fibers also exhibited stable, repeatable, and highly distinguishable responses under high tensile strain.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Kijun Park, Soojung An, Jihyun Kim, Sungjun Yoon, Jihyang Song, Daekwang Jung, Jae Park, Yeontaek Lee, Donghee Son, Jungmok Seo
Summary: Coronary artery bypass grafting is commonly used to treat cardiovascular diseases but has limitations due to the availability of blood vessels and low long-term patency rate. A bioelectronic conduit with self-healing properties and a lubricious inner coating, called RAAVG, was developed to address these issues. It showed resistance against mechanical stimuli, prevented leakage, and presented antibiofouling and antithrombotic properties. Additionally, a blood-flow sensor integrated into the RAAVG allowed sensitive monitoring of blood flow. Ex vivo and in vivo experiments demonstrated the biocompatibility and feasibility of RAAVG as an artificial graft, which can improve the long-term patency rate of coronary artery bypass grafts.
Article
Chemistry, Multidisciplinary
Chaebeen Kwon, Sanghyeon Lee, Chihyeong Won, Kyu Hyoung Lee, Minyoung Kim, Jaehong Lee, Seung-Jae Yang, Minkyu Lee, Seungmin Lee, Kukro Yoon, Sungjoon Cho, Taeyoon Lee
Summary: A multi-functional and stretchable bismuth telluride (Bi2Te3) thermoelectric fabric has been fabricated, which exhibits excellent electrical reliability and can detect both normal pressure and temperature difference.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Physical
Sukhwan Jun, Seunggi Seo, Seungwon Park, Tae Hyun Kim, Minkyu Lee, Seok Man Hong, Taehoon Kim, Seung-min Chung, Taeyoon Lee, Myoungsub Kim, Hyungjun Kim
Summary: In this study, Ge-Se-S amorphous chalcogenide alloys were synthesized using atomic layer deposition (ALD) for potential ovonic threshold switch (OTS) applications. The composition of the Ge-Se-S thin films was controlled by adjusting the temperature and low-temperature plasma sulfurization time. Compared to ALD GeSe2, the Ge5Se3S2 alloy exhibited a slightly larger threshold voltage drift but demonstrated advantages in terms of higher threshold field, lower off-current, and smaller threshold voltage fluctuation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Multidisciplinary Sciences
Mingyu Sang, Myeongki Cho, Selin Lim, In Sik Min, Yuna Han, Chanwoo Lee, Jongwoon Shin, Kukro Yoon, Woon-Hong Yeo, Taeyoon Lee, Sang Min Won, Youngmee Jung, Yun Jung Heo, Ki Jun Yu
Summary: Continuous glucose monitoring (CGM) system allows diabetes patients to effectively manage their disease and prevent exacerbation. We propose a glucose-responsive fluorescence-based highly sensitive biodegradable microneedle CGM system that can painlessly and precisely monitor glucose concentration in the interstitial fluid.
Article
Materials Science, Coatings & Films
Hwan-Seok Seo, Taeyoon Lee, Hyungjun Kim, Ivan Petrov, J. E. Greene
Summary: We investigated the phase composition of HfNx and the effects of low-energy ion irradiation on the microstructure of polycrystalline layers. The results show that the phases in the layers change with increasing x, and the properties of the layers are influenced by ion irradiation.
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A
(2023)
Review
Engineering, Electrical & Electronic
Jae Park, Yeontaek Lee, Tae Young Kim, Sooyoung Hwang, Jungmok Seo
Summary: Wearable and implantable bioelectronics have attracted attention due to the demand for personalized healthcare systems, but currently face limitations in long-term stability, biocompatibility, and interface compatibility. This review discusses strategies to overcome these limitations and provides insight into the current challenges and future prospects of commercializing bioelectronics.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Ui Jin Kim, Dong Hae Ho, Yoon Young Choi, Yongsuk Choi, Dong Gue Roe, Yonghyun Albert Kwon, Seongchan Kim, Young Jin Choi, Yejin Heo, Sae Byeok Jo, Geun Yeol Bae, Taeyoon Lee, Jeong Ho Cho
Summary: This article presents an artificial multimodal integration system that emulates the perception of discomfort through the integration of multiple sensory signals. The system utilizes a sensory ring oscillator to integrate thermosensory and hygrosensory signals into voltage pulses, which are then translated into a postsynaptic current highly correlated with the calculated humidex.
ACS MATERIALS LETTERS
(2022)
