Article
Multidisciplinary Sciences
Koki Murakami, Yuji Isano, Juri Asada, Natsuka Usami, Yutaka Isoda, Tamami Takano, Ryosuke Matsuda, Kazuhide Ueno, Ohmi Fuchiwaki, Hiroki Ota
Summary: In this study, a method using a polymer composite material consisting of liquid metal and ion gel as wiring is proposed. The wiring is formed through injection and printing, and exhibits high conductivity and stable resistance. By curing at room temperature, the upper insulative layer of the ion gel self-assembles simultaneously with the formation of the lower layer liquid metal wiring, resulting in high conductivity and low resistance change rate during deformation. This ion gel-liquid metal bilayer wiring can be used for three-dimensional wiring and exhibits stable circuit operation. Therefore, this method significantly promotes the development of flexible electronic devices.
SCIENTIFIC REPORTS
(2023)
Article
Materials Science, Multidisciplinary
Naohiro Terasawa
Summary: In this study, new nanocomposite electrodes and actuators were described. The electromechanical/chemical properties of the SG-SWCNT/PEDOT:PSS/IL electrode and actuator were superior to those of the SG-SWCNT/IL electrode and actuator. The use of PEDOT:PSS polymer promoted higher conductivity, specific capacitance, and strain.
DIAMOND AND RELATED MATERIALS
(2022)
Article
Engineering, Multidisciplinary
Hongwei Hu, Shengtao Zhang, Yan Li, Xinghao Hu, Lin Xu, Aixin Feng, Guanggui Cheng, Jianning Ding
Summary: Electrochemical actuators based on conductive polymers are competitive in the field of soft actuators due to their flexible nature, low cost, low operating voltage, and air-working ability. Adding electroactive materials like CNT and graphene can improve their actuation performance. However, their output strains are generally lower than 1%, limiting their applications in various scenarios.
JOURNAL OF BIONIC ENGINEERING
(2023)
Article
Energy & Fuels
Manas R. Samantaray, Naba Kr Rana, Arun Kumar, Dhriti S. Ghosh, Nikhil Chander
Summary: Perovskite solar cells show promise as next-generation photovoltaic devices due to their high efficiency, but commercialization of large-area cells is hindered by fabrication methods and material stability. Copper contacts have shown comparable efficiency to gold contacts, providing a low-cost alternative for large-area PSCs. Stability testing has shown that copper-based PSCs can retain efficiency under ambient conditions for a certain period of time.
INTERNATIONAL JOURNAL OF ENERGY RESEARCH
(2022)
Article
Engineering, Electrical & Electronic
Melinda A. Lake-Speers, Sindhu Preetham Burugupally, David J. Hoelzle
Summary: In this paper, we introduce an electrostatic curved electrode actuator in deionized water. Through model, design, static and dynamic testing, and analysis, we demonstrate the actuator's performance in a microfluidic device for cell sorting. The actuator shows accurate predictions of maximum displacement and release voltage, and achieves large displacements at high frequencies.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Xingxian Lan, Taijin Tang, Huarui Xie, Syed Waqar Hasan, Lizhe Liang, Zhi Qun Tian, Pei Kang Shen
Summary: Flexible power sources are crucial for the widespread use of portable and wearable electronics. This study presents a facile and general method for fabricating fibrous electrodes, which bridges the gap between materials and fiber-shaped electrodes for flexible energy storage devices.
Article
Nanoscience & Nanotechnology
Yuehua Liu, Siqi Yin, Weipeng Wang, Xiaotian Xue, Lingwei Ma, Fengtong Zhao, Yihang Fan, Yunhan Ling, Zhengjun Zhang
Summary: Silver (Ag) nanostructures are active functional platforms for various applications, but they often suffer from poor stability. By developing a self-passivated Ag-Al nanostructure with a precisely controlled coating thickness, enhanced stability and improved properties have been achieved. Dilute doping of Al into the Ag matrix and mild processing conditions were used to enable mechanically robust nanostructures and ultra-thin conductive electrodes, paving the way for practical applications in optical sensors and integrated circuits.
ACS APPLIED NANO MATERIALS
(2021)
Article
Chemistry, Physical
Philip Bellchambers, Silvia Varagnolo, Corinne Maltby, Ross A. Hatton
Summary: This study introduces high-performance transparent copper grid electrodes that outperform conventional indium tin oxide electrodes for organic photovoltaic (OPV) applications. The fabrication method is cost-effective and efficient, with a faster process compared to conventional lithography. The ultra-narrow grid line spacing minimizes parasitic absorption losses, making it a promising solution for OPV devices.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Chemistry, Inorganic & Nuclear
Yanmin Wang, Chong Sun, Hu Zhao, Jinlong Cui, Yongqiang Zhang, Wenxiu He
Summary: Metal sulfides as supercapacitor electrode materials have large theoretical capacity and rich operability, but their unsatisfactory cycle stability and rate performance are challenging problems. Therefore, the effective strategy to solve these problems is the preparation of metal sulfide-based electrode materials with a stable structure, long cycle life, and high-rate performance. In this study, metal sulfides were first crystallized into crosslinked nanosheet and nanotube structures, providing abundant active sites for redox reactions. Further modification of the prepared material by spraying graphene resulted in a more complete hollow structure, enlarged electrochemical reaction sites, and reduced electrolyte transport distance, thereby improving the charge transfer kinetics. The electrode material underwent a self-activation process during the charge-discharge cycle test, transforming it from one equilibrium state to a new equilibrium state. The 2-CSNS@RGO electrode showed a capacitance of 1650.13 C g(-1) at 1 A g(-1) with remarkable cycling of 3000 cycles at 10 A g(-1), retaining 186.1% capacity of the initial value. An asymmetric supercapacitor (2-CSNS@RGO//AC) was prepared using 2-CSNS@RGO as the positive electrode and activated carbon (AC) as the negative electrode, exhibiting an energy density of 88 W h kg(-1) at a power density of 0.8 kW kg(-1) and a capacity retention rate of 131.6% after 30,000 cycles at 10 A g(-1).
DALTON TRANSACTIONS
(2023)
Article
Engineering, Environmental
Peng Chen, Rui Cheng, Guangyuan Meng, Zhiming Ren, Jiali Xu, Pengfei Song, Hualin Wang, Lehua Zhang
Summary: Flow-through electrodes with commercial graphite felt as cathode showed high reduction efficiency for Cr(VI) in acidic conditions. The porous structure allowed sufficient contact surface, while slow flow rate and high current promoted electroreduction. Competing metal ions at fast flow rates decreased Cr(VI) reduction efficiency.
JOURNAL OF HAZARDOUS MATERIALS
(2021)
Article
Chemistry, Multidisciplinary
Khalida Mubeen, Muhammad Zia Ullah Shah, Muhammad Sajjad, Afshan Irshad, Zahid Ali, Zainab Zafar, A. Shah
Summary: We report a novel binary composite of ZnO/CuS with different ratios of CuS to investigate their electrochemical performance in hierarchical nanostructures. The synergistic effect of CuS as a nanostructure collector supports ZnO nanorods, resulting in remarkable stability and high power. These results demonstrate the importance of other transition metal oxide-based electrodes in achieving significantly improved performance.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Multidisciplinary
Ekta P. Asiwal, Harishchandra H. Nishad, Chaturvedi S. Gujja, Pravin S. Walke, Suresh D. Pawar
Summary: This study synthesized a novel Ni-MOF material using an N-trimellitylimido dicarboxylic acid linker for the first time via a simple solvothermal method. The prepared Ni-MOF nanoflakes were characterized using various techniques. The electrochemical performance of the Ni-MOF nanoflakes was investigated, showing a specific capacity of 21 mA h at 1 A g(-1). The supercapacitor achieved an energy density of 11 W h kg(-1) and a power density of 6396 W kg(-1), demonstrating its superior energy storage capability.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Engineering, Multidisciplinary
Amir Malakooti, Hesham Abdualla, Sajed Sadati, Halil Ceylan, Sunghwan Kim, Kristen Cetin
Summary: This study examines the influence of electrode size and geometry on the resistive heating performance of ECON HPS and identifies the most electrically and thermally-efficient type of electrode through experimental testing and theoretical analysis. It was found that electrode surface contact area plays a significant role in influencing temperature increase, with smaller-diameter electrodes exhibiting higher cost-effectiveness and larger diameter electrodes having higher energy-conversion efficiency.
COMPOSITES PART B-ENGINEERING
(2021)
Article
Biotechnology & Applied Microbiology
Huabin Wang, Ran Duan, Xinquan Zhou, Jia Wang, Ying Liu, Rui Xu, Zhuwei Liao
Summary: In this study, hydrothermally carbonized steel slag (HCSS) was synthesized using low-cost steel slag as a fabricant, and it showed good adsorption capacity for heavy metal removal in wastewater treatment. The mechanism studies revealed that the modification of steel slag on bio-adsorbents and the oxygen-containing functional groups in HCSS contributed to the adsorption capacity. This study suggests a promising approach for resource recovery and heavy metal remediation using solid waste-derived environmentally functional materials.
FRONTIERS IN BIOENGINEERING AND BIOTECHNOLOGY
(2022)
Article
Chemistry, Analytical
Danting He, Jia Yang, Jiahui Zhang, Chengguo Hu
Summary: A simple filtration method is reported for the fabrication of salt-induced nanoporous gold electrodes (SINPGEs) from gold nanoparticles (AuNPs). This method utilizes sodium chloride (NaCl) to trigger the aggregation, sintering, and deposition of AuNPs on polyvinylidene fluoride (PVDF) membranes, resulting in the scalable fabrication of flexible SINPGEs with high conductivity, good mechanical property, large surface area, and low cost. The nanoporous structure of SINPGEs improves the electrochemical responses of various species, and the passivation effect of chloride ions on the oxidation of hydrogen peroxide can be repressed by electrochemical activation.
SENSORS AND ACTUATORS B-CHEMICAL
(2023)
Article
Thermodynamics
B. S. Preetham, L. Weiss
Article
Physics, Applied
Sindhu Preetham Burugupally, David Hoelzle
APPLIED PHYSICS LETTERS
(2018)
Review
Energy & Fuels
Sindhu Preetham Burugupally, Leland Weiss
Article
Thermodynamics
Sindhu Preetham Burugupally, Leland Weiss, Christopher Depcik
APPLIED THERMAL ENGINEERING
(2019)
Article
Thermodynamics
Sindhu Preetham Burugupally, Leland Weiss
Article
Engineering, Electrical & Electronic
Sindhu Preetham Burugupally, W. Roshantha Perera
SENSORS AND ACTUATORS A-PHYSICAL
(2019)
Review
Neurosciences
Bhavana Palakurthi, Sindhu Preetham Burugupally
Article
Thermodynamics
Christopher Depcik, Truman Cassady, Bradley Collicott, Sindhu Preetham Burugupally, Xianglin Li, Shah Saud Alam, Jose Rocha Arandia, Jared Hobeck
ENERGY CONVERSION AND MANAGEMENT
(2020)
Article
Engineering, Electrical & Electronic
Sindhu Preetham Burugupally, Bhargav Koppolu, Negar Danesh, Yongkuk Lee, Vidisha Indeewari, Bin Li
Summary: By implementing distributed electrode arrays with fractal interconnects in elastomer actuators, achieving large displacements at high speeds is possible, making them suitable for driving microrobots.
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2021)
Article
Energy & Fuels
Shah Saud Alam, Scott Wilson Rosa, Christopher Depcik, Sindhu Preetham Burugupally, Ethan McDaniel, Jared D. Hobeck
Summary: An adaptive Wiebe function was developed for methane-air combustion and oxy-methane combustion in spark-ignition (SI) engines. Linear regression analysis was used to fit the adaptive Wiebe model to experimental data with good accuracy. Scaling process was extended for specialized SI applications. Comparisons with literature show that the scaled Wiebe function is a reasonable tool for combustion predictions.
Article
Mechanics
Faisal Bilal Memon, Vishwa Sai Prathyusha, Sindhu Preetham Burugupally, Bin Li
Summary: An understanding of droplet electromechanics is important for the development of droplet-based technologies. A simplified mathematical model was derived to describe the electromechanics of mesoscale droplets, and it was validated through simulations and experiments. The model revealed the impact of fluid properties on droplet electromechanics, and three important observations were reported.
Article
Engineering, Mechanical
Sindhu Preetham Burugupally
Article
Robotics
Sindhu Preetham Burugupally
JOURNAL OF MICRO-BIO ROBOTICS
(2019)
Article
Engineering, Electrical & Electronic
B. S. Preetham, Melinda A. Lake, David J. Hoelzle
JOURNAL OF MICROMECHANICS AND MICROENGINEERING
(2017)