Article
Chemistry, Analytical
Nobuo Misawa, Mitsuyoshi Tomida, Yuji Murakami, Hidefumi Mitsuno, Ryohei Kanzaki
Summary: We developed a compact two-electrode voltage clamping system for Xenopus laevis oocytes using microfabricated electrodes and a fluidic device. This system allows for measuring changes in oocyte plasma membrane potential by separating the device and using an external amplifier. Through simulations and experiments, we investigated the success rates of oocyte arrays and electrode insertion with different flow rates, and successfully detected oocyte responses to chemical stimuli.
Article
Materials Science, Multidisciplinary
Katariina Solin, Maryam Borghei, Monireh Imani, Tero Kamarainen, Kaisa Kiri, Tapio Makela, Alexey Khakalo, Hannes Orelma, Patrick A. C. Gane, Orlando J. Rojas
Summary: By combining minerals with cellulose fibrils of different characteristic dimensions, fluidic channels with ideal wettability were produced, offering a reliable option for diagnostics and sensing. Inkjet printing was used to easily add biomolecular ligands to the channels, enabling simultaneous detection of glucose and proteins. Linear calibration allowed for accurate determination of clinically relevant concentrations, demonstrating the potential of paper-based diagnostics.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Engineering, Environmental
Hyungmin Jeon, Jin Seok, Yejee Ha, Jeong-Chul Kim, Hae Sung Cho, Hee-Man Yang, Minkee Choi
Summary: In this study, a new kind of Al-rich mesoporous silicate (ARMS) was successfully synthesized using a cationic organosilane surfactant as an efficient mesoporogen. Compared to commercially applied NaA, ARMS exhibited dramatically improved Sr2+-exchange kinetics in batch adsorption and showed similar Sr2+ capture capacity and selectivity. It also displayed a significantly larger breakthrough volume than NaA in fixed-bed continuous adsorption due to its fast Sr2+-exchange kinetics.
JOURNAL OF HAZARDOUS MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
James W. P. Brown, Rokiah G. Alford, James C. Walsh, Richard E. Spinney, Stephanie Y. Xu, Sophie Hertel, Jonathan F. Berengut, Lisanne M. Spenkelink, Antoine M. van Oijen, Till Bocking, Richard G. Morris, Lawrence K. Lee
Summary: By utilizing multivalent interactions to form stable DNA origami receptors capable of rapid subunit exchange, this study is expected to benefit future research in utilizing DNA origami structures for a wide range of possible kinetic behaviors.
Article
Environmental Sciences
Zhihong Lin, Jiali Tang, Xiaochun Huang, J. Paul Chen
Summary: In this study, a non-porous metal-organic framework (MOF) was synthesized for efficient and rapid removal of phosphorus in water. The MOF exhibited high adsorption capacity and fast adsorption kinetics. It also showed excellent performance in various conditions of phosphate contamination. This study suggests that the newly developed MOF has great potential as a cost-effective adsorbent for phosphorus treatment in water and wastewater.
Article
Chemistry, Physical
Qin Peng, Yunhu Zhang, Sigurd Wenner, Bin Yang, Benjamin Milkereit, Jette Broer, Armin Springer, Christoph Schick, Olaf Kessler
Summary: This study used differential fast scanning calorimetry (DFSC) to investigate the rapid solidification behavior of micro-sized Al-Si alloy particles. The solidification sequence and different mechanisms of α-Al phase formation were proposed. This study provides a practical approach to examining the rapid solidification behavior of metal particles, allowing the distinction between surface and interface/bulk nucleation.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Chemistry, Analytical
Daniele Peterle, Thomas E. Wales, John R. Engen
Summary: During HDX-MS analysis, understanding back-exchange is crucial for correction and calculation purposes. This study presents a fast and effective protocol for preparing maxD control samples, utilizing denaturation and deuteration to achieve optimal levels of deuteration within a short timeframe. The results show that this protocol performs equivalently to previous methods, but with significantly reduced time and effort.
ANALYTICAL CHEMISTRY
(2022)
Article
Engineering, Environmental
Jie Liu, Jin-Jin Li, Zheng-Hong Luo, Yin-Ning Zhou
Summary: In this study, pseudo-cyclic vinylogous urethane (VU) vitrimers were fabricated with accelerated associative exchange kinetics and enhanced mechanical properties. The pseudo-cyclic vitrimers exhibited higher crosslinking densities and more orderly arranged network topologies compared to their linear counterpart. Tensile strength and toughness were significantly improved, and the vitrimers showed high-efficient self-healable capability at room temperature. The study contributes to the development of fast self-healing vitrimers and expands their potential applications.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Jiayue Wang, Dmitri Kalaev, Jing Yang, Iradwikanari Waluyo, Adrian Hunt, Jerzy T. Sadowski, Harry L. Tuller, Bilge Yildiz
Summary: Exsolution is a recent advancement in fabricating oxide-supported metal nanoparticle catalysts. The kinetics of metal exsolution depends on the kinetics of oxygen release from the host oxide, in addition to the kinetics of metal cation diffusion. This study demonstrates that in the thin-film perovskite SrTi0.65Fe0.35O3 (STF) system, surface oxygen release governs the metal nanoparticle exsolution kinetics. Increasing the oxygen release rate in STF accelerates the Fe0 exsolution kinetics and increases the quantity of exsolved Fe0 over time.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2023)
Article
Chemistry, Physical
D. Kalaev, H. L. Tuller
Summary: Mixed ionic-electronic conductors (MIECs) play a crucial role in emerging energy conversion and energy efficient computational technologies. However, characterizing MIECs under a wide range of experimental conditions is challenging and resource-intensive, which limits their study and applications. This study introduces a novel method of simultaneously measuring the electrical conductivity and optical absorption of thin films in an out-of-equilibrium state, enabling a comprehensive study of a MIEC oxide, PrxCe1-xO2-δ (PCO), with significantly faster characterization speed compared to established techniques. The results show the constant oxygen vacancy mobility and the linear dependence of small polaron mobility on delta, yielding a quadratic relationship between total conductivity and delta. Furthermore, the method is applied to study the modification of PCO's transport properties with composition change. The work opens up new possibilities for studying the effects of microstructure, strain, and external stimuli on the transport and thermodynamic properties of PCO and similar MIEC materials.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)
Article
Nanoscience & Nanotechnology
Wen-Bei Yu, Ming Yi, Huan-Huan Fu, Mao-Jun Pei, Yao Liu, Bao-Ming Xu, Yu Li, Wei Yan, Jiujun Zhang
Summary: The low utilization of photogenerated carriers and limited solvent diffusion are the main challenges for Cu2O-based photocatalysts in organic pollutant removal. This study successfully synthesized nanostructured Cu/Cu2O photocatalysts with effective solvent diffusion channels and high carrier utilization based on DFT calculations and the dandelion structure. The catalysts with interconnected nanotube structure and hollow nanosphere morphology containing active facets not only increase reaction sites, but also facilitate the transfer and separation of photogenerated carriers at the Cu/Cu2O heterojunction interface. The as-prepared Cu/Cu2O-4 nanocatalyst exhibits excellent photocatalytic performance, achieving 90% removal efficiency of high-concentration Orange II within 10 minutes and maintaining it at 90.4% after four cycles. This work provides a promising approach for high-performance catalyst construction and contributes to the understanding of organic pollutant removal mechanisms.
ACS APPLIED NANO MATERIALS
(2023)
Article
Engineering, Electrical & Electronic
Yaohua Zhang, Junjian Tang, Li Cao, Binbin Zhao, Lin Li, Yueyang Zhai
Summary: Spin-exchange relaxation-free atomic magnetometers have become popular in biomagnetic measurement research due to their miniaturization and portability. However, common-mode noise and resolution limitations pose challenges. Gradient magnetometry provides a promising solution by reducing noise and improving resolution.
SENSORS AND ACTUATORS A-PHYSICAL
(2023)
Article
Biochemical Research Methods
Richard Agren, Hugo Zeberg
Summary: This study demonstrates that using an Ag-AgBr electrode with saturated KBr solution can reduce micropipette resistance, thereby decreasing the capacitive transient in two-electrode voltage clamp recordings. Additionally, it shows that the exchange of chloride against bromide ions does not seem to affect oocyte physiology and ion channel kinetics.
JOURNAL OF NEUROSCIENCE METHODS
(2021)
Article
Engineering, Chemical
Jianjun Zhang, Yubin He, Kaiyu Zhang, Xian Liang, Rachida Bance-Soualhi, Yuan Zhu, Xiaolin Ge, Muhammad A. Shehzad, Weisheng Yu, Zijuan Ge, Liang Wu, John Robert Varcoe, Tongwen Xu
Summary: By introducing cation-dipole interactions, the self-assembly of ion-conducting channels in anion-exchange membranes can be enhanced, leading to higher ion conductivity and peak power density.
Article
Physiology
Kazutaka Ushio, Erika Watanabe, Takehiro Kamiya, Ayumi Nagashima, Tadaomi Furuta, Genki Imaizumi, Toru Fujiwara, Michael F. Romero, Akira Kato
Summary: Boric acid is a toxic micronutrient at high concentrations in animals. This study identifies aquaporins as potential boric acid channels in human cells, providing insights into the transport mechanisms of boric acid.
PHYSIOLOGICAL REPORTS
(2022)