Article
Nanoscience & Nanotechnology
Ramadan Abu-Rjal, Yoav Green
Summary: The study shows that nanofluidic diodes exhibit unipolar and bipolar behaviors under different geometric and surface charge conditions, with bipolar and semi-bipolar systems showing a wider range of phenomena. Furthermore, the investigation of system characteristics includes not only the steady-state results, but also the time-dependent rectification factors and transport numbers in transient conditions.
ACS APPLIED MATERIALS & INTERFACES
(2021)
Article
Engineering, Environmental
Yen-Shao Su, Wen-Hsin Hung, Amalia Rizki Fauziah, Zuzanna S. Siwy, Li-Hsien Yeh
Summary: Researchers have developed an asymmetric branch-type alumina nanochannel (BAN) membrane that exhibits reversed and significantly enhanced ionic rectification under a pH gradient, without the need for any chemical modification of the channel walls. This work highlights the link between surface chemistry, concentration polarization, and ion current rectification, significantly expanding our understanding of how asymmetric pH environments influence transport properties of asymmetric nanofluidics.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Physical
Yunfei Teng, Xiang-Yu Kong, Pei Liu, Yongchao Qian, Yuhao Hu, Lin Fu, Weiwen Xin, Lei Jiang, Liping Wen
Summary: Biological ion channels have sparked booming research on manufacturing artificial prototypes with nanotechnology, leading to successful realization of smart responding functions at the nanometer scale. Ion track-etching technology, a crucial branch of fabricating solid-state nanochannels, offers advantages like easy fabrication, low cost, and high customization.
Article
Thermodynamics
Nguyen Van Toan, Truong Thi Kim Tuoi, Naoki Inomata, Megat Muhammad Ikhsan Megat Hasnan, Masaya Toda, Ioana Voiculescu, Suhana Mohd Said, Takahito Ono
Summary: This work demonstrates thermal-to-electric energy conversion based on ionic nanofluidic transport in nano channels induced by a temperature gradient. The performance of the thermally ionic nanofluidic energy harvesting system in cases with and without nanochannels has been evaluated and compared. The results confirm the advantage of nanochannels on energy conversion and the influence of nanochannel materials on power density.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Chemistry, Multidisciplinary
Jianze Feng, Yan Wang, Yongtai Xu, Hongyun Ma, Gaowei Wang, Pengjun Ma, Yu Tang, Xingbin Yan
Summary: This study introduces a novel bias-direction-adjustable supercapacitor-diode with high rectification ratio and outstanding cycling life, representing a significant breakthrough in designing high-performance capacitive ionic diodes.
ADVANCED MATERIALS
(2021)
Article
Chemistry, Analytical
Jiahao Lu, Yanan Jiang, Tianyi Xiong, Ping Yu, Wei Jiang, Lanqun Mao
Summary: In this study, a nanofluidic ionic diode was successfully constructed by in situ asymmetric growth of metal-organic frameworks (MOFs) in nanochannels. The nanofluidic device exhibited ionic current rectification (ICR) behavior at different electrolyte concentrations and the rectification ratio could be regulated by visible light illumination. This study provides a reliable method for building a nanofluidic platform for molecular sensing.
ANALYTICAL CHEMISTRY
(2022)
Article
Chemistry, Multidisciplinary
Mengyuan Chen, Kun Yang, Jin Wang, Hanjun Sun, Xing-Hua Xia, Chen Wang
Summary: In response to the energy crisis, the osmotic energy conversion method utilizing the salinity gradient between seawater and freshwater is an effective way to obtain energy. However, the majority of nanofluidic membranes used for osmotic energy generation are cation-selective. This study presents the synthesis of an anion-selective membrane by growing imine-bridged covalent organic framework (COF) on ordered anodic aluminum oxide (AAO) at room temperature. The resulting membrane exhibits excellent ionic current rectification property, high ion selectivity and permeability, and successfully harvests salinity gradient energy.
ADVANCED FUNCTIONAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Ran Peng, Yueyue Pan, Biwu Liu, Zhi Li, Peng Pan, Shuailong Zhang, Zhen Qin, Aaron R. Wheeler, Xiaowu (Shirley) Tang, Xinyu Liu
Summary: This study provides a comprehensive understanding of the design and mechanism of a new type of ionic diode constructed from horizontally aligned multi-walled carbon nanotubes, achieving an optimized ionic current rectification ratio and demonstrating potential applications in biosensing and biocomputing.
Review
Chemistry, Multidisciplinary
Gregorio Laucirica, Maria Eugenia Toimil-Molares, Christina Trautmann, Waldemar Marmisolle, Omar Azzaroni
Summary: The study on energy generation through osmotic pressure difference between water sources of different salinities is a promising sustainable energy harvesting method. However, current technology faces limitations in real application, and advanced nanostructured membranes are seen as a key strategy to overcome these barriers.
Article
Chemistry, Multidisciplinary
Mao Wang, Jianwen Jiang
Summary: Nanofluidic diode based on a covalent organic framework (COF) is studied, showing remarkable diode behavior in a hybrid-bilayer COF but not in its constituent single-layer COFs through molecular simulation. The rectification effect of ion current in the hybrid-bilayer COF is attributed to an asymmetric electrostatic potential across the COF nanopore. Furthermore, a synergistic effect of counterion is unraveled in the hybrid-bilayer COF, reducing the entry barrier and facilitating ion transport. The performance of the hybrid-bilayer COF as a nanofluidic diode is comprehensively investigated, demonstrating its feasibility and potentially stimulating the development of new nanofluidic platforms.
Article
Chemistry, Physical
Long Ma, Kabin Lin, Yinghua Qiu, Jiakun Zhuang, Xuan An, Zhishan Yuan, Chuanzhen Huang
Summary: In high-performance osmotic energy conversion, the slipping surface (L) of nanopores is crucial for enhancing both electric power and energy conversion efficiency, especially for nanopores with shorter lengths. However, for nanopores longer than 30 nm, slipping on the inner surface results in a significant decrease in energy conversion efficiency due to enhanced transport of ions.
JOURNAL OF PHYSICAL CHEMISTRY C
(2021)
Article
Chemistry, Multidisciplinary
Dan Meng, Changlong Hao, Jiarong Cai, Wei Ma, Chen Chen, Chuanlai Xu, Liguang Xu, Hua Kuang
Summary: A tailorable membrane channel system was developed using penicillamine molecules intercalated in copper selenide nanoparticles, which exhibited strong optical activity and increased rectification ratio. The integration of penicillamine allowed for high enantioselective recognition against naproxen with a low limit of detection.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2021)
Article
Thermodynamics
Mohammad Karimzadeh, Mahdi Khatibi, Seyed Nezameddin Ashrafizadeh
Summary: The study investigated the effects of temperature and concentration gradients on ionic selectivity, ionic current rectification, Joule heating, and viscosity dissipation in conical soft nanochannels through numerical simulations. It was found that increasing temperature and concentration ratios can lead to higher levels of Joule heating, potentially affecting the transport behavior of ionic species within soft nanochannels. Overall, it was concluded that lack of control in Joule heating generation could be detrimental to the transport behavior of ions in soft nanochannels.
INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER
(2021)
Article
Chemistry, Multidisciplinary
Pei Tang, Wuyang Tan, Fangzhou Li, Shan Xue, Yihui Ma, Pengwei Jing, Yanghui Liu, Jian Zhu, Xingbin Yan
Summary: Supercapacitor diode (CAPode) is a novel device that integrates ion diode functionality into a conventional electrical double-layer capacitor. It has potential applications in emerging fields and can achieve high charge storage and rectification properties through spinel ZnCo2O4's ion-selective surface redox reaction. Furthermore, it can be used in logic gate applications to realize logic operations. This research expands the types of CAPodes and provides a train of thought for constructing high-performance capacitive ionic diodes.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Javier E. Escobar, Juan Molina, Eduardo Gil-Santos, Jose J. Ruz, Oscar Malvar, Priscila M. Kosaka, Javier Tamayo, Alvaro San Paulo, Montserrat Calleja
Summary: By integrating nanomechanical sensing with liquid flow, nanofluidic systems can achieve flow control. We demonstrate high-precision control of liquid flow using nanowires as resonators and also show the capability of handling extremely small liquid volumes. By voltage-driven flow of ionic liquids along the surface of nanowires, we observe non-linear increase of mass flow rate at different voltages.
Article
Materials Science, Multidisciplinary
Min Niu, K. Jayanthi, Hongfei Gao, Alexandre P. Solomon, Eric C. O'Quinn, Lei Su, Yuanbin Qin, Maria Eugenia Toimil-Molares, Hongjie Wang, Maik Lang, Alexandra Navrotsky
Summary: Radiation induced structural and energetic changes were investigated in amorphous SiOC polymer-derived ceramic using neutron pair distribution function (PDF) analysis and high temperature oxide melt solution calorimetry. The radiation modified SiOC structure was found to be energetically less stable compared to the unirradiated structure, with a destabilization energy of 24.0 +/- 1.6 kJ/mol. This destabilization was attributed to decreased connectivity of the Si-O-C network and destruction of free carbon. The irradiated structure was also more likely to undergo phase separation during subsequent thermal annealing. This study has important implications for the evaluation of amorphous SiOC ceramic as a radiation resistant structure for nuclear applications.
Article
Chemistry, Multidisciplinary
Gregorio Laucirica, Yamili Toum Terrones, Michael F. P. Wagner, Vanina M. Cayon, Maria Lorena Cortez, Maria Eugenia Toimil-Molares, Christina Trautmann, Waldemar Marmisolle, Omar Azzaroni
Summary: Nanofluidic channels, called nanofluidic field effect transistors (nFETs), can modulate ionic transport by using an external voltage. In this study, the actuation range of nFETs was extended by using the supporting electrolyte as a chemical effector. By changing the electrolyte nature, different ion transport regimes were set, and the rectification efficiency was controlled by the gate voltage.
Article
Chemistry, Multidisciplinary
Mohan Li, Nils Ulrich, Ina Schubert, Wilfried Sigle, Michael Florian Peter Wagner, Christina Trautmann, Maria Eugenia Toimil-Molares
Summary: This study reports on the catalytic performance of highly interconnected networks of gold nanowires with customized diameters between 80 and 170 nm. The networks were synthesized through electrodeposition in etched ion-track polymer templates, with optimized conditions for enhanced wire crystallinity and network homogeneity. These self-supporting nanowire networks exhibited an increased electrochemically active surface area as the wire diameter increased. The networks demonstrated remarkable stability during 200 CV cycles of methanol oxidation reactions, with a peak current density up to 200 times higher than that of a flat reference electrode, and only a 5% drop in peak current density. The gold nanowire networks proved to be excellent model systems for studying porous catalyst performance and promising nanosystems for direct alcohol fuel cell catalyst applications.
Article
Nanoscience & Nanotechnology
Gonzalo E. Fenoy, Roger Hasler, Christoph Lorenz, Jacopo Movilli, Waldemar A. Marmisolle, Omar Azzaroni, Jurriaan Huskens, Peter Baeuerle, Wolfgang Knoll
Summary: Clickable organic electrochemical transistors (OECTs) enable the functionalization of electronic devices through click chemistry. This study examines various aspects of click chemistry-based interface engineering for OECTs, including investigating different channel architectures and studying different reaction conditions for the click reaction. The authors also demonstrate successful immobilization of biomolecules on OECTs for use as biosensors. The performance of these biosensors is compared to previous architectures, showing improved density of immobilized molecules and similar binding affinity and signal change.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Electrochemistry
Jia Luo, Mu Lan, Michael Wagner, Nils Ulrich, Peter Kopold, Ioannis Tzifas, Hongyan Wang, Christina Trautmann, Maria Eugenia Toimil-Molares
Summary: We transformed free-standing Cu nanowire arrays into metal-organic frameworks KHUST-1 through electrochemical oxidation. The formation of HKUST-1 particles was confirmed through the binding of Cu2+ ions and benzene tricarboxylic acid ligands in the electrolyte solution. The morphology and crystallinity of the samples at different transformation stages were investigated, and the formation of octahedral structures of several mu m in size was observed.
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
(2023)
Article
Chemistry, Analytical
Marjorie Montero-Jimenez, Francisco L. L. Amante, Gonzalo E. E. Fenoy, Juliana Scotto, Omar Azzaroni, Waldemar A. A. Marmisolle
Summary: This work investigates the use of PEDOT-polyamine blends as versatile organic films for conducting channels and non-denaturing platforms in OECT-based biosensors. The response of the devices to protein adsorption using two different strategies, direct electrostatic adsorption and specific recognition, is studied. The stability of protein adsorption and assembly is monitored using surface plasmon resonance and OECT, and the sensing mechanisms for the two strategies are discussed.
Article
Instruments & Instrumentation
M. F. P. Wagner, K. -O. Voss, C. Trautmann, M. E. Toimil-Molares
Summary: The accelerator facilities at GSI and FAIR offer unique opportunities for interdisciplinary research in material science and nanotechnology. The ion-track technology allows for the synthesis and control of high-aspect-ratio nanostructures, such as nanochannels and nanowires, by utilizing the small size and long length of ion tracks. The electrodeposition and ion-track nanotechnology provide a platform for developing unique 3D networks of nanowires with controlled dimensions and properties.
EPJ TECHNIQUES AND INSTRUMENTATION
(2023)
Review
Nanoscience & Nanotechnology
Marjorie Montero-Jimenez, Juan Lugli-Arroyo, Gonzalo E. Fenoy, Esteban Piccinini, Wolfgang Knoll, Waldemar A. Marmisolle, Omar Azzaroni
Summary: Organic electrochemical transistors (OECTs) are important devices for flexible and wearable sensors. This study presents OECTs based on PEDOT-polyamine thin films for selective monitoring of phosphate-containing compounds. The research findings show that supramolecular single phosphate-amino interaction induces higher changes in the OECT response compared to ATP-amino interactions, and the OECT response reflects the polymer/solution interface as well as events within the conducting polymer film. The study also reveals the influence of phosphate species on enzyme immobilization behavior.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Chemistry, Physical
Shankar Dutt, Christian Notthoff, Xue Wang, Christina Trautmann, Pablo Mota-Santiago, Patrick Kluth
Summary: This study investigates the annealing kinetics of high energy ion damage in amorphous silicon dioxide (a-SiO2), focusing on the effects of annealing temperature, duration, and ambient environment. Using synchrotron-based small-angle X-ray scattering (SAXS) and etching methods, the track annealing kinetics and ion track morphology were analyzed. The study found that annealing proceeds quicker near the sample surface and showed small changes in the radial density distribution profile of the ion tracks. This research enhances the understanding of ion track damage recovery and its implications for materials used in radioactive waste storage and solid state nanopores.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Inorganic & Nuclear
Carl-Christian Meyer, Ernst Artes, Markus Bender, Joachim Broetz, Christoph E. Duellmann, Constantin Haese, Egon Jaeger, Birgit Kindler, Bettina Lommel, Marton Major, Maximilian Rapps, Dennis Renisch, Christina Trautmann, Alexander Yakushev
Summary: The maximum thickness and irradiation stability of current generation actinide targets have hindered progress in the discovery and study of new superheavy elements. This study successfully produced lanthanide targets using anhydrous electrochemical routes and conducted irradiation tests.
Review
Chemistry, Physical
Santiago E. Herrera, Maximiliano L. Agazzi, Eugenia Apuzzo, M. Lorena Cortez, Waldemar A. Marmisolle, Mario Tagliazucchi, Omar Azzaroni
Summary: The complexation of polyelectrolytes with other oppositely charged structures has led to the development of various functional materials with potential applications in many technological fields. Recent research has focused on the complexation of polyelectrolytes with alternative building blocks such as small charged molecules, and the similarities between these complexes and well-known polycation-polyanion complexes. This review discusses the physicochemical characteristics of these complexes and their potential as versatile functional platforms in fields such as biomedicine and advanced materials engineering.
Correction
Chemistry, Multidisciplinary
Gonzalo E. Fenoy, Roger Hasler, Felice Quartinello, Waldemar A. Marmisolle, Christoph Lorenz, Omar Azzaroni, Peter Bauerle, Wolfgang Knoll
Correction
Chemistry, Multidisciplinary
Gonzalo E. Fenoy, Roger Hasler, Felice Quartinello, Waldemar A. Marmisolle, Christoph Lorenz, Omar Azzaroni, Peter Baeuerle, Wolfgang Knoll