Article
Multidisciplinary Sciences
Ahmet F. Demiroers, Erik Poloni, Maddalena Chiesa, Fabio L. Bargardi, Marco R. Binelli, Wilhelm Woigk, Lucas D. C. de Castro, Nicole Kleger, Fergal B. Coulter, Alba Sicher, Henning Galinski, Frank Scheffold, Andre R. Studart
Summary: In this study, a 3D printing platform for the assembly of colloidal particles of silica and carbon with programmable structural color is proposed. The printing parameters and ink composition are optimized to achieve objects with tunable structural color. Multimaterial printing is used to create complex-shaped objects with multiple structural colors, offering a new approach for mimicking structural color in natural systems.
NATURE COMMUNICATIONS
(2022)
Review
Chemistry, Multidisciplinary
Shuaibing Guo, Bing Yu, Fengyuan Gao, Song Wang, Youqing Shen, Hailin Cong
Summary: Three-dimensional colloidal crystal materials have unique optical properties and spatial structure, with potential for preparing three-dimensionally ordered microporous materials. This review covers various preparation methods, effects of parameters on assembly, and main applications of 3DCCs.
JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY
(2021)
Article
Chemistry, Physical
Jaspal Singh, Shrawan Roy, Trang Thu Tran, Sophia Akhtar, Eunji Lee, Jeongyong Kim
Summary: The use of ultrathin nanohybrid films in photocatalytic applications is effective for decomposing pollutants. In this study, ultrathin films composed of Au nanoparticles and Fe2O3 oxy-hydroxides were prepared. These films exhibited outstanding photodecomposition ability and superior photocatalytic activity due to their broad absorption and efficient charge transfer.
SURFACES AND INTERFACES
(2023)
Article
Polymer Science
Naiyu Liu, Zhikun Zheng, Dingshan Yu, Wei Hong, Hailu Liu, Xudong Chen
Summary: A facile method for building responsive photonic crystal patterns was developed, utilizing commercially printed patterns as masks to induce invisible patterns through wetting. The masked areas exhibit strong structural colors while the unmasked areas remain transparent, providing a unique and reversible wetting feature. This programmable printing technique is expected to be an environmentally friendly approach for scalable invisible optical anti-counterfeiting technology.
Article
Multidisciplinary Sciences
Masahide Sato
Summary: The formation of AB(2) type two-dimensional binary colloidal crystals was studied using Monte Carlo simulations with differently sized particles. The study found that the interaction between equivalently sized particles played a crucial role in the formation of AB(2) structures, while creating AB(2) on a wall required suitable particle size ratios and greater attraction between particles and the wall.
SCIENTIFIC REPORTS
(2022)
Article
Chemistry, Multidisciplinary
Marius Schoettle, Thomas Tran, Tanja Feller, Markus Retsch
Summary: This article introduces a concept of time-temperature integrators based on colloidal crystals, which utilize film formation from mixtures of particles with different glass transition temperatures to achieve local readout. The sensing material is suitable for long-term tracing and threshold applications.
ADVANCED MATERIALS
(2021)
Article
Optics
Xiang Ling, Peng Fei Zhu, Kun Zhu, Yun Xia Ping, Pei Song, Jin Yi Du
Summary: This study observed the transient response of the lateral photovoltaic effect (LPE) in a Ti-SiO2-Si structure when irradiated by a 650 nm laser, and found that it is linearly dependent on the laser irradiation position. The mechanism of the response time was experimentally verified and a model was established to simulate and analyze the transient process. This is important for studying the position sensitivity of LPE-based sensors in terms of amplitude and response time.
Article
Chemistry, Multidisciplinary
Marius Schoettle, Thomas Tran, Harald Oberhofer, Markus Retsch
Summary: By combining materials synthesis and colloidal mesostructure, a method is demonstrated to measure time and temperature independently based on the material properties of complex colloidal crystal mixtures. Utilizing machine learning-enabled image analysis, the colloidal crystal arrays can autonomously record isothermal heating events, with readout obtained by capturing photographs of the sensor using a standard smartphone camera.
Article
Polymer Science
Pedro M. Resende, Edgar Gutierrez-Fernandez, Myriam H. Aguirre, Aurora Nogales, Marisol Martin-Gonzalez
Summary: Polymers play a central role in current society, particularly in the development of new metamaterials through nanostructuration and functionalization. Interestingly, the nanostructuration of Polyethylene can lead to the fabrication of stable and functional three-dimensional nanonetworks.
Article
Chemistry, Physical
Umamahesh Thupakula, Priya Laha, Gertjan Lippertz, Koen Schouteden, Asteriona-Maria Netsou, Aleksandr Seliverstov, Herman Terryn, Lino M. C. Pereira, Chris Van Haesendonck
Summary: Two-dimensional allotropes of tellurium, known as tellurene, have recently attracted attention in materials research due to their exotic properties in ultrathin form. This study reports the observation of three different 2D superstructures of tellurene on Au(111) surfaces using an alternative experimental deposition approach. The superstructures were characterized using scanning tunneling microscopy and spectroscopy, Auger electron spectroscopy, and field emission AES. The study found that the formation of these superstructures led to changes in the surface reconstruction of Au(111), and the electronic properties of the tellurium atoms showed a strong dependence on their structural arrangement. The emergence of band gaps with a p-type charge character was observed in two of the superstructures on Au(111).
JOURNAL OF CHEMICAL PHYSICS
(2022)
Article
Physics, Applied
Jinyi Du, Pengfei Zhu, Pei Song, Kun Zhu, Yunxia Ping, Chaomin Zhang, Xiaohui Sun
Summary: This paper explores the two-dimensional characteristics of a metal-oxide-semiconductor (MOS) sensor with high sensitivity by preparing Ti-SiO2-Si samples. The experiment demonstrates that the lateral photovoltage (LPV) sensitivity decreases gradually as the laser scanning direction deviates from the line between two electrodes. Additionally, the relationship between LPV and laser point position is found to be nonlinear, with symmetry observed when the scanning direction is perpendicular to the line between the electrodes. The mechanism of the lateral photovoltaic effect is explained by carrier diffusion theory, with further experiments and calculations confirming the correlation between the difference in laser point position and LPV. A mathematical equation describing this relationship is proposed as a new method for two-dimensional displacement detection in MOS sensors.
JOURNAL OF PHYSICS D-APPLIED PHYSICS
(2021)
Article
Chemistry, Physical
Syara Kassim, Sibu C. Padmanabhan, Martyn E. Pemble
Summary: The research focused on the bottom-up colloidal synthesis of PMMA@Au core-shell structures, their assembly into 3D metallodielectric PCs, and their potential use as surface enhanced Raman substrates. The materials engineering involved in combining the synthesis of monodispersed CS particles and the fabrication of their corresponding MDPCs allowed for control of the distribution of Au NPs in the PC structure for investigating their optical properties.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Multidisciplinary
Huanfeng Zhu, Jialin Li, Qiang Chen, Wei Tang, Xinyi Fan, Fan Li, Linjun Li
Summary: As building blocks for next-generation information technologies devices, p-n junctions based on van der Waals materials are important. Homojunctions are particularly attractive due to their advantages in band alignment and carrier trapping. In this study, a lateral p-n homojunction was successfully constructed in 2D layered copper indium thiophosphate through the migration of Cu+ ions under an electric field. The resulting devices demonstrated electric-field-driven resistance switching and rectification behavior, which could be continuously modulated by poling voltage. Additionally, the homojunction showed a photovoltaic effect with spectral response up to the visible region.
Article
Optics
Sameh O. Abdellatif, Khaled Kirah, Frank Marlow
Summary: This study accurately modeled the transmission dips in 2D colloidal crystals, successfully explaining their origin and observing the actual dip formation experimentally. The experimental results showed a very small mismatch error with theory.
Article
Materials Science, Multidisciplinary
Haoyuan Li, Austin M. Evans, William R. Dichtel, Jean-Luc Bredas
Summary: This study demonstrates an approach to drive the formation of 2D COFs by establishing a relationship between the lateral growth rates and microscopic processes. It was found that the bond formation rate, relative bond formation rates at crystal faces and edges, and lattice size are critical parameters for determining the lateral growth rates. Additionally, the importance of self-templation in 2D COF growth was revealed in the study.
ACS MATERIALS LETTERS
(2021)
Article
Physics, Applied
Xinna Yu, Ke Chang, Anhua Dong, Zhikai Gan, Kang'an Jiang, Yibin Ling, Yiru Niu, Diyuan Zheng, Xinyuan Dong, Renzhi Wang, Yizhen Li, Zhuyikang Zhao, Peng Bao, Binbin Liu, Yuhong Cao, Su Hu, Hui Wang
Summary: In this study, molybdenum disulfide quantum dots were used to enhance the performance of resistive switching devices, resulting in lower switching voltages, uniform resistance states, improved endurance, and larger on/off ratios. The convergence of electric field distribution around the quantum dots is believed to enhance conductive filament formation, contributing to the optimization of device performance and furthering developments in data storage applications.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Applied
Xinyuan Dong, Diyuan Zheng, Jing Lu, Yiru Niu, Binbin Liu, Hui Wang
Summary: By utilizing surface plasmon-based techniques, researchers have successfully prepared Ag-ZnO core-shell nanoparticles with enhanced lateral photovoltaic effect. This system exhibits excellent LPE performance with a maximum sensitivity of 122.1 mV/mm, significantly outperforming conventional Ag/Si (5.03 mV/mm) and ZnO/Si (76.13 mV/mm) systems.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Applied
Shuai Liu, Xinyuan Dong, Yiru Niu, Diyuan Zheng, Zhikai Gan, Hui Wang
Summary: This study reveals an enhanced light-induced resistance effect in the structure of Ag/graphene/n-type Si, demonstrating significant linear resistance change and high sensitivity. By optimizing the thickness of the Ag film, the resistance change ratio can reach 472%, much higher than the control sample. The diffusion and recombination of photocarriers at the heterojunction interface play a crucial role in the enhancement of the effect.
APPLIED PHYSICS LETTERS
(2021)
Article
Optics
Shuai Liu, Anhua Dong, Xinyuan Dong, Yiru Niu, Diyuan Zheng, Hui Wang
Summary: Complex oxide perovskites, with SrTiO3 as an iconic material, exhibit novel physical phenomena and have gained popularity in electronic devices. The enhancement of lateral photovoltaic effect sensitivity by SrTiO3 nano-film offers an effective way to improve oxide-based photodetection devices.
Article
Physics, Applied
Yiru Niu, Xinna Yu, Xinyuan Dong, Diyuan Zheng, Shuai Liu, Zhikai Gan, Ke Chang, Binbin Liu, Kang'an Jiang, Yizhen Li, Hui Wang
Summary: By controlling the formation and fracture of conductive filaments at the interface, adding a SiO2/MoS2 QD hybrid structure can transform the reset mode of RRAM from progressive to abrupt, significantly improving the switching window and performance.
APPLIED PHYSICS LETTERS
(2022)
Article
Chemistry, Physical
Xinyuan Dong, Diyuan Zheng, Jing Lu, Yiru Niu, Hui Wang
Summary: The study demonstrates selectively enhanced violet and near-infrared effects in ZnO/Si homo-heterostructure, with sensitivity controlled by manipulating annealing temperature. The increase in optical response time of the annealed sample by about 25 times is attributed to defect ionization in the ZnO layer and resistivity change after annealing.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Physical
Diyuan Zheng, Xinyuan Dong, Jing Lu, Yiru Niu, Hui Wang
Summary: WS2, a typical TMDs with strong light-matter interaction, shows great potential for highly-responsive photoelectric detectors. The WS2 nano-films prepared by ALD exhibit a high-performance lateral photovoltaic effect with high position sensitivity and ultrafast response speed, while the absorption wavelength of lateral photovoltage changes significantly as the thickness of WS2 decreases, indicating a correlation between materials bandgap and LPV.
APPLIED SURFACE SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
Xinyuan Dong, Diyuan Zheng, Jing Lu, Yiru Niu, Hui Wang
Summary: The study focuses on enhancing the lateral photovoltaic effect by adjusting the d-band density of states of nanoparticles, leading to improved hot electron injection efficiency in surface plasmon-based LPE. The modification resulted in enhanced LPE in TiO2/Ag-Cu NPs/Si structure, showing superior lateral photovoltage sensitivity compared to samples with Cu NPs and Ag NPs, particularly under 445 nm laser irradiation. These findings provide a promising approach for boosting photoelectric conversion in LPE and potentially expanding the applications of high sensitivity LPE-based optoelectronic devices.
IEEE ELECTRON DEVICE LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Diyuan Zheng, Xinyuan Dong, Jing Lu, Yiru Niu, Hui Wang
Summary: By using P(VDF-CTFE) as a ferroelectric gate, the sensitivity and infrared detection performance of WS2/Si junctions have been successfully improved, allowing for broadening of the absorption wavelength range and enhancing the sensitivity of lateral photovoltaic effect. The significant improvement in response speed is attributed to the increase in carrier initial kinetic energy, providing a new approach for high-sensitivity, ultrafast, and stable infrared photodetection.
Article
Physics, Applied
Binbin Liu, Ke Chang, Xinna Yu, Yiru Niu, Xinyuan Dong, Hui Wang
Summary: The study found that both gradual and abrupt reset behaviors exist in the Ta/Ta2O5/In-Sn-O structure, and the reset processes can be controlled by different compliance currents. The different compositions of conductive filaments lead to different resistive switching behaviors.
PHYSICAL REVIEW APPLIED
(2021)
Article
Nanoscience & Nanotechnology
Ke Chang, Anhua Dong, Xinna Yu, Binbin Liu, Xinhui Zhao, Renzhi Wang, Zhikai Gan, Kang'an Jiang, Yiru Niu, Xinyuan Dong, Diyuan Zheng, Yizhen Li, Peng Bao, Zhuyikang Zhao, Hui Wang
Summary: By utilizing Ag-doped fibroin film as a switching medium, a high-performance transient memristor with self-assembled Ag nanoclusters model is designed and fabricated, showing novel electron-transport properties. The device can operate at ultralow voltages and has an extremely high memory window, opening up a new pathway for designing high-performance transient memristors for a safe and reliable data storage system.
ADVANCED ELECTRONIC MATERIALS
(2022)
Article
Physics, Applied
Yizhen Li, Xinhui Zhao, Ke Chang, Yiru Niu, Xinna Yu, Hui Wang
Summary: This study improved the resistive switching behavior of a memory device by adding MoS2 quantum dots between the W bottom electrode and ZnO insulator. The modified device showed better switching properties and was successfully transferred onto a polyvinyl alcohol substrate, making it fully degradable.
PHYSICAL REVIEW APPLIED
(2022)
Article
Optics
Yuhong Cao, Kang'an Jiang, Zhuyikang Zhao, Hui Wang
Summary: Optoelectronic memory is a promising strategy for emulating the human visual system, but current devices lack the ability to store visual information. In this study, we discovered a light-induced trapping effect that allows for long-term storage of optical signals in a molybdenum disulfide quantum dot memory structure. The trapping capability can be significantly enhanced through laser irradiation, showcasing the potential of this approach for artificial intelligence devices.
Article
Physics, Applied
Renzhi Wang, Ke Chang, Xinhui Zhao, Xinna Yu, Saiqun Ma, Zhuyikang Zhao, Hui Wang
Summary: This study investigates the impact of device kinetic parameters on the stability of resistive switching behavior and proposes a high-performance RRAM with a Pt-Ag/Ta2O5/GQDs/Pt structure. Quantum dots can regulate the direction of Ag ion migration, while the Pt-Ag composite electrode can manipulate the oxidation rate of Ag atoms. Compared to the Ag/Ta2O5/GQDs/Pt device, the Pt-Ag/Ta2O5/GQDs/Pt device exhibits significantly improved performance.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Multidisciplinary
Ke Chang, Xinhui Zhao, Xinna Yu, Zhikai Gan, Renzhi Wang, Anhua Dong, Zhuyikang Zhao, Yafei Zhang, Hui Wang
Summary: In this work, a light-triggered nonvolatile resistive switching behavior in oxygen-doped MoS2 is demonstrated. The two-terminal devices exhibit stable light-modulated resistive switching characteristics and optically tunable synaptic properties with an on/off ratio of up to 104. The integrated device with crossbar architecture enables simultaneous image sensing, preprocessing, and storage, thereby increasing the training efficiency and recognition rate of image recognition tasks. This work presents a novel pathway to develop the next generation of light-controlled memory and artificial vision systems for neuromorphic computing.
