Article
Multidisciplinary Sciences
Lingyu Huang, Kang Xu, Dandan Yuan, Jin Hu, Xinwei Wang, Shaolin Xu
Summary: The study introduces a patterned pulse laser lithography method for creating structured arrays with sub-wavelength features on large-area thin films under ambient conditions, providing a practical fabrication method for light modulation metasurfaces.
NATURE COMMUNICATIONS
(2022)
Article
Multidisciplinary Sciences
Peipei Du, Jinghui Li, Liang Wang, Liang Sun, Xi Wang, Xiang Xu, Longbo Yang, Jincong Pang, Wenxi Liang, Jiajun Luo, Ying Ma, Jiang Tang
Summary: The article discusses the fabrication of efficient CsPbBr3 PeLEDs using a vacuum deposition technique, achieving an external quantum efficiency (EQE) of 8.0% and demonstrating a functional area PeLED of 40.2 cm(2) for potential display applications. The strategy of confinement strength regulation in thermally evaporated perovskites provides an effective way to process high-efficiency and large-area PeLEDs towards commercial display panels.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Svetlana Em, Mussa Yedigenov, Laura Khamkhash, Shanazar Atabaev, Anara Molkenova, Stavros G. Poulopoulos, Timur Sh Atabaev
Summary: In this study, we investigated the improved solar-light-assisted photocatalytic activity of ZnO nanorods decorated with Ag nanoparticles. The results showed that the presence of Ag nanoparticles on ZnO nanorods significantly increased the degradation rate of a model water pollutant. The efficient charge separation was identified as the key factor contributing to the improved photocatalytic activity.
Article
Thermodynamics
Daniel Karajz, Domonkos Cseh, Bence Parditka, Zoltan Erdelyi, Imre Szilagyi
Summary: This study combines atomic layer deposition with hydrothermal growth to produce different structures of gel-like crystals. The morphology, composition, structure, and optical properties of the samples were investigated to reveal the characteristics and performance of the materials.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Chemistry, Physical
N. S. K. Gowthaman, Jhih-Wei Chen, Chang Fu Dee, Siang-Piao Chai, Wei Sea Chang
Summary: This report presents a strategy to inhibit electron-hole recombination and enhance charge separation and injection efficiency in ZnO nanorods for photoelectrochemical performance. The presence of surface oxygen vacancies and metal/semiconductor heterojunction contribute to the improved photoactivity. The findings highlight the importance of surface modification and heterojunction design in developing efficient photoanodes.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Chemistry, Multidisciplinary
Li-Ping Ding, Yan Tang, Peng Shao, Hui Zhang, Yi-Jin Guo, Jia-Hao Zeng, Ya-Ru Zhao
Summary: The edge structure of 2D materials is crucial for their properties and functionalities. In this study, the edge reconstruction structures of ZnO nanoribbons were investigated using computational tools and theoretical simulations. Stable armchair, O-enriched zigzag, and Zn-enriched zigzag edge structures were identified.
Article
Chemistry, Physical
Aditya Singh, Biswajit Samir De, Sujay Karmakar, Suddhasatwa Basu
Summary: The WO3/BiVO4 heterojunction-based photoanodes have great potential in PEC water splitting. However, challenges such as resistive losses of TCO substrate and nonuniform deposition of co-catalyst hinder the development of large-area photoanodes. In this study, a patterned metal microgrid is used to reduce resistive losses and improve the uniformity of potential distribution. The combination of metal microgrid, large-area WO3/BiVO4 heterojunction, flow-induced uniform deposition of CoPi, and electrolyte flow in PEC cell design enhances the photocurrent and stability of large-area photoanodes. This research provides guidelines for improving the PEC performance of large-area photoanodes through electrochemical engineering strategies.
ACS APPLIED ENERGY MATERIALS
(2023)
Article
Chemistry, Physical
Yunyan Zhang, Pingmei Ming, Baolong Xue, Huan Liu, Xiaohong Yang, Lunxu Li, Shen Niu, Liang Yan, Xingshuai Zheng, Ge Qin
Summary: In this study, a unique mask-patterned ultrafine anode scanning electrodeposition (MUAS-ECD) technology, along with a nonconventional deposit design and preparation process strategy, was proposed to construct functional heterogeneous wettability surfaces on large-area metallic substrates. The achieved 5-layer deposit patterned strip-groove structural surfaces (5-LDPS) demonstrated a remarkably high water collection rate, even after 100 abrasion cycles. The proposed MUAS-ECD and accompanying process strategy show great potential in structuring large-area robust heterogeneous wettability metallic surfaces for efficient fog harvesting in water-starved environments.
SURFACES AND INTERFACES
(2023)
Article
Chemistry, Multidisciplinary
Jifei Feng, Yi Luo, Xinyi Wang, Guofa Cai, Rong Cao
Summary: In this study, a large area patterned hydrogen-bonded organic framework (HOF) film was successfully fabricated on unmodified conductive substrates using an efficient and low-cost electrostatic spray deposition (ESD) method. By combining ESD with a template method, various patterns of HOF films, including deer and horse shapes, were easily produced. The obtained films showed excellent electrochromic performance and could change color quickly. Based on these films, a large-area patterned EC device was constructed, demonstrating practical potential application. The presented ESD method can be extended to other HOF materials, providing a feasible path for the construction of large-area patterned HOF films for optoelectronic applications.
Article
Nanoscience & Nanotechnology
Young-Hoon Kim, Jinwoo Park, Sungjin Kim, Joo Sung Kim, Hengxing Xu, Su-Hun Jeong, Bin Hu, Tae-Woo Lee
Summary: In this study, highly efficient large-area PeLEDs with high uniformity were achieved through the use of colloidal perovskite nanocrystals. The precrystallized PNCs were not affected by the film formation process and a modified bar-coating method facilitated the formation of uniform large-area films. This method shows promise for the development of large-scale industrial displays and solid-state lighting.
NATURE NANOTECHNOLOGY
(2022)
Article
Chemistry, Multidisciplinary
Hao Zhang, Yi Lu, Deqi Fan, Xueling Xu, Xiaodong Li, Xiaofei Yang
Summary: In this study, La1-xSrxCoO3 (LSC) perovskites were prepared using a hydrothermal and calcination method, and the oxygen evolution reaction (OER) activity was enhanced at x=0.1 composition. Two-dimensional (2D) Ti3C2 MXene dopant was introduced to improve electrocatalytic oxygen evolution and solar thermal evaporation. Strong interaction and charge-transfer between La1-xSrxCoO3 and Ti3C2 MXene accelerated the redox process. The obtained La0.9Sr0.1CoO3/Ti3C2 MXene (LSM) composite showed a low overpotential of 330 mV and excellent durability in 1 M KOH electrolyte. It also exhibited high solar-evaporation conversion efficiency of 96.8% under 1 sun irradiation. These findings demonstrate the great potential of perovskite-derived materials in solar desalination and electrocatalysis.
CHEMICAL COMMUNICATIONS
(2023)
Article
Nanoscience & Nanotechnology
Wei Han, Xiaodong Zheng, Ke Yang, Chi Shing Tsang, Fangyuan Zheng, Lok Wing Wong, Ka Hei Lai, Tiefeng Yang, Qi Wei, Mingjie Li, Weng Fu Io, Feng Guo, Yuan Cai, Ning Wang, Jianhua Hao, Shu Ping Lau, Chun-Sing Lee, Thuc Hue Ly, Ming Yang, Jiong Zhao
Summary: Large-scale 2D beta-In2Se3 films and alpha-In2Se3 films were successfully grown by chemical vapor deposition, and a complete phase transition enabled the obtainment of a full spectrum of paraelectric, ferroelectric and antiferroelectric 2D films.
NATURE NANOTECHNOLOGY
(2023)
Article
Nanoscience & Nanotechnology
Hui Yang, Ming-Mei Zhao, Lan Li, Le-Xi Zhang
Summary: ZnO nanomaterials have been widely used for gas sensors due to their structural flexibility, earth abundance, and environmental friendliness. This study found that ZnO nanorods with a high amount of doubly positively charged oxygen vacancies showed superior gas sensitivity towards xylene, while Ga doping reduced the number of these vacancies and resulted in worse sensing performance. Therefore, doubly positively charged oxygen vacancies play a crucial role in the gas sensing performance of metal-oxide semiconductors.
ACS APPLIED NANO MATERIALS
(2022)
Article
Chemistry, Physical
Qinrong He, Xuan Li, Jinshuai Zhang, Han Zhang, Joe Briscoe
Summary: The study successfully fabricated a p-n junction ZnO textile nanogenerator using PEDOT:PSS/CuSCN-coated ZnO nanorods, combining the advantage of ZnO piezoelectricity and textile flexibility. It was found that increasing the length of ZnO nanorods can lead to higher output voltage and power density in the nanogenerators, which could be applied in designing future flexible self-powered devices and wearable electronics.
Article
Chemistry, Physical
Tanika Kessaratikoon, Sawarin Saengsaen, Silvano Del Gobbo, Valerio D'Elia, Tawan Sooknoi
Summary: ZnO nanostructures with different morphologies, nanorods, and nanopyramids were synthesized using non-aqueous and aqueous sol-gel techniques. The ZnO nanorods obtained through a rapid and scalable procedure exhibited high surface area. They showed excellent catalytic performance in complete methane oxidation at high temperatures, maintaining over 90% conversion for 12 hours at 700 degrees C. The high surface-to-volume ratio and abundant oxygen vacancies contributed to their enhanced catalytic activity.
Article
Chemistry, Physical
Xiaotao Liu, Zhenhua Wu, Yiqiang Zhang, Christos Tsamis
APPLIED SURFACE SCIENCE
(2019)
Article
Nanoscience & Nanotechnology
Konstantinos Misiakos, Eleni Makarona, Marcel Hoekman, Romanos Fyrogenis, Kari Tukkiniemi, Gerhard Jobst, Panagiota Sotirios Petrou, Sotirios Elias Kakabakos, Alexandros Salapatas, Dimitrios Goustouridis, Mikko Harjanne, Paivi Heimala, Ioannis Raptis
Article
Engineering, Electrical & Electronic
A. P. Kerasidou, A. Bardakas, M. Botzakaki, S. N. Georga, C. A. Krontiras, K. Mergia, V. P. Psycharis, C. Tsamis
MICROELECTRONIC ENGINEERING
(2019)
Article
Engineering, Electrical & Electronic
Dimitris Barmpakos, Christos Tsamis, Grigoris Kaltsas
MICROELECTRONIC ENGINEERING
(2020)
Article
Materials Science, Multidisciplinary
Apostolos Segkos, Eleni Alexandratou, Ilias Sakellis, Nikolaos Boukos, Spiros Gardelis, Konstantinos Kordatos, Christos Tsamis
Summary: This work investigates the photoluminescence mechanisms of N-doped, CQD-based nanocomposites in the form of aqueous suspensions and thin films, aiming to facilitate their solid-state applications. The study reveals two optical centers, H-aggregates of citrazinic acid derivatives and 4-hydroxy-1H-pyrrolo[3,4-c]pyridine-1,3,6(2H,5H)-trione (HPPT), which are excitation-independent emitters and sensitive to ambient pH conditions. The interaction between these optical centers in the solid state is also observed through an energy transfer mechanism.
FUNCTIONAL MATERIALS LETTERS
(2022)
Article
Green & Sustainable Science & Technology
Marina Stramarkou, Christos Boukouvalas, Sokratis E. Koskinakis, Olga Serifi, Vasilis Bekiris, Christos Tsamis, Magdalini Krokida
Summary: Smart food packaging is an innovative packaging system that extends product shelf life and reduces food waste. Evaluation of its environmental and economic sustainability showed that it is superior in most impact categories.
Review
Instruments & Instrumentation
Marina Stramarkou, Achilleas Bardakas, Magdalini Krokida, Christos Tsamis
Summary: This study provides an extensive overview of CO2 chemi-resistive sensors based on ZnO, discussing the most significant advances in recent years and the best strategies for enhancing ZnO sensing properties.
Article
Materials Science, Multidisciplinary
M. Kanidi, A. Bardakas, A. Kerasidou, A. Anastasopoulos, C. Tsamis, M. Kandyla
Summary: We have developed a method for controlling surface wettability patterns by growing ZnO nanorods on laser-microstructured silicon. The prepared surfaces are superhydrophilic and can transition to a wetting state with high water contact angles under certain conditions. The surfaces also exhibit reversible wettability with external stimuli. This method allows for local modification of the wetting state, enabling directed liquid motion for microfluidic applications. These surfaces have potential applications in various fields, including precision coatings and frictionless liquid transport.
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING
(2023)
Article
Nanoscience & Nanotechnology
E. Hourdakis, A. Bardakas, A. Segkos, S. Tsilivaki, S. Gardelis, C. Tsamis
Summary: In this work, we have demonstrated a two-pixel solid-state photoluminescent device that can emit white light covering the entire visible spectrum from 380 nm to 800 nm. The combination of porous Si, hydrothermally grown ZnO, and carbon quantum dots enables independent actions of porous Si and ZnO, with carbon quantum dots deposited on top of the entire device. The use of standard Si processing techniques allows for cost-effective and environmentally safe production.
Review
Chemistry, Multidisciplinary
Achilleas Bardakas, Andreas Kaidatzis, Christos Tsamis
Summary: The recent advancements in magnetoelectric (ME) materials have led to the development of functional magnetoelectric composites for various applications such as sensors, energy harvesting, and material exploration. These composites rely on the interaction between piezoelectric and magnetoelastic materials, and ZnO has been widely studied due to its remarkable properties. This article provides a comprehensive review of magnetoelectric composites based on ZnO micro- and nanostructures, covering methods, applications, and future prospects.
APPLIED SCIENCES-BASEL
(2023)
Article
Engineering, Electrical & Electronic
G. P. Papageorgiou, A. G. Karydas, G. Papageorgiou, V Kantarelou, E. Makarona
MICRO AND NANO ENGINEERING
(2020)
Article
Chemistry, Multidisciplinary
Apostolos Segkos, Ilias Sakellis, Nikolaos Boukos, Charalampos Drivas, Stella Kennou, Konstantinos Kordatos, Christos Tsamis
Proceedings Paper
Energy & Fuels
S. Siskos, V. Gogolou, C. Tsamis, A. Kerasidou, G. Doumenis, K. Tsiapali, S. Katsikas, A. Sakellariou
2019 IEEE 29TH INTERNATIONAL SYMPOSIUM ON POWER AND TIMING MODELING, OPTIMIZATION AND SIMULATION (PATMOS 2019)
(2019)
Proceedings Paper
Engineering, Electrical & Electronic
Dimitris Barmpakos, Apostolos Segkos, Christos Tsamis, Grigoris Kaltsas
2019 20TH INTERNATIONAL CONFERENCE ON SOLID-STATE SENSORS, ACTUATORS AND MICROSYSTEMS & EUROSENSORS XXXIII (TRANSDUCERS & EUROSENSORS XXXIII)
(2019)
Article
Materials Science, Composites
Maria Giovanna Pastore Carbone, Georgia Tsoukleri, Anastasios C. Manikas, Eleni Makarona, Christos Tsamis, Costas Galiotis
JOURNAL OF COMPOSITES SCIENCE
(2019)
