JOURNAL OF THE AMERICAN CERAMIC SOCIETY
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2023
·Vol. 106
·期 8
·5078-5085
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IF 3.9
Bingjun Liu,Bin Han,Na Yan,Min Sun,Guowu Tang,Hao Huang,Qi Qian,Zhongmin Yang
Single-crystal core multimaterial fibers have a wide range of applications in optics. Though some multimaterial fibers with single-element crystal cores have been manufactured successfully, the preparation of binary and multielement crystals is limited by segregation or stoichiometry deviation during the thermal drawing and recrystallization process. This paper presents a new method, several times recrystallization by laser, to solve the crystal segregation problem of binary or multielement crystal core multimaterial fibers.
研究领域:
光学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
Advanced Science
·
2025
·
IF 14.1
Qingwen Dai,Chengxuan Du,Wei Huang,Xiaolei Wang
In this work, the regulation of liquid self-transport is achieved through architectural and thermal coupling, transitioning from free surfaces to open channels. Hierarchical structures inspired by the skin of a Texas horned lizard are designed, with the primary structure of wedged grooves and the secondary structure of capillary crura. This design enables advantages including long-distance self-transport, liquid storage and active reflux management on free surfaces, directional transportation, synthesis and detection of reagents in confined spaces, as well as controllable motion and enhanced heat dissipation in open channels. The regulation capacity can be precisely controlled by adjusting the secondary capillary crura and external thermal gradients. The regulation mechanism is further elucidated through microscopic flow observation and a deduced theoretical model. The proposed structures are expected to introduce a new concept for designing lubrication systems, microfluidic chips, methods for chemical synthesis, and heat transfer in the future.
研究领域:
材料科学
·
微流体技术
·
热传递工程
✓ 已验证
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2024
·
IF 13.3
Xinxing Zhou,Bo Wu,Wei Wei,Kun Wang,Kerui Li,Chengyi Hou,Qinghong Zhang,Yaogang Li,Hongzhi Wang
The construction of high-density thermoelectric legs on flexible thermoelectric generators (F-TEG) to enhance thermal energy utilization has garnered widespread attention. However, designing an efficient spatial structure to increase the density of TE legs in F-TEG remains challenging. Inspired by the spiral configuration of nautilus shells, we have developed a novel belt-shaped flexible thermoelectric generator (BF-TEG) featuring a spiral multi-layered three-dimensional structure. This multi-layer structure not only increases the number of TE legs along the thermal gradient but also mitigates rapid heat transfer to the cold end, enabling high-performance output from the device. The BF-TEG exhibits an ultrahigh normalized Seebeck voltage of 0.518 mV/K cm −2 at a 40 K ΔT, which is double that of the state-of-the-art printed thin-film devices. Electricity can be generated directly without the need for a spacer in actual wear. Demonstrations of it powering electrochromic devices and LED bulbs show its potential as an energy supply device.
研究领域:
材料科学
·
能源技术
·
仿生学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2022
·
IF 9.965
Qingwen Dai,Jin Yan,Arman Sadeghi,Wei Huang,Xiaolei Wang,M.M. Khonsari
In this paper, we explore a concept and present the first experimental evidence to show that it is possible to form a stable liquid film and create lifting force at the interface via thermal gradient to minimize interfacial rubbing of surfaces and the associated wear. The approach is based on manipulating the flow behavior via thermocapillary, which describes how a liquid can be made to flow from warm to cold regions purely by inducing a thermal gradient. We show that liquid bridges between two parallel plates can be manipulated and stabilized under a combined effect of the thermocapillary flow and the Couette flow , which describes the motion of a viscous fluid between two parallel plates in a relative sliding motion. The equilibrium stage is confirmed under different experimental conditions of a thermal gradient, interfacial gap, liquid viscosity, and liquid bridge volume. A strategy is proposed to control liquid motion and create lifting force between two plates. A theoretical model is also presented to illustrate the principle of the equilibrium stage. Creating lifting forces at the interface offers a new thermo-hydrodynamic tool for manipulating liquids behavior. This approach has the potential for controlling liquid motion in mechanical components and nature.
研究领域:
机械工程
·
流体力学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ACS Applied Materials & Interfaces
·
2022
·
IF 10.383
Sangqiu Chen,Qingwen Dai,Xiaolong Yang,Jiongjie Liu,Wei Huang,Xiaolei Wang
In this work, a design concept of bioinspired functional surfaces is proposed for lubricant control at surfaces and interfaces subjected to external thermal gradients. Inspired by the conical structures of cactus and the motion configuration of Centipedes, a bioinspired surface of wedged-groove with an oriented capillary pattern is constructed. The effect of geometrical parameters on the directional lubricant manipulation capacity and sliding anisotropy is discussed. It is found that by regulating the orientation of the capillary pattern, a controllable lubricant self-transport capacity can be achieved for varying conditions from surfaces to interfaces, with or without thermal gradients. The lubricant self-transport process is captured, and the mechanism is revealed. The design philosophy of the proposed bioinspired functional surface is believed to have potential applications for lubricant control in modern machinery and complex liquid control in lab-on-a-chip and microfluidics devices.
研究领域:
材料科学
·
生物工程
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微流控技术
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
·
2011
·
IF 1.384
Chuanyi Tao,Xueming Li,Wenjing Yang
Hook-shaped and straight silica wires have been successfully synthesized on silicon wafer through a simple thermal vapor method with or without assistance of Al , respectively. The hook-shaped silica wires have amorphous structures with nearly 100 μm long and about 4 μm in average diameters, while the straight silica wires are hundreds of micrometers long and approximately 50–300 nm in diameters. The composition analysis revealed that larger Al/SiO x islands can form on the silicon substrate with Al catalysts, whereas tiny silica clusters form without Al catalysts. They could act as the nucleation centers for the growth of silica wires with different shapes. The formation process of hook-shaped silica microwire results from a thermal gradient on the silicon substrate. The thermal gradient may be caused by the cold gas flowing during the process or other factors that lead to uneven temperature. On the contrary, straight growth of silica submicrowire is unacted on the thermal gradient factor due to the tiny silica clusters as nucleation centers. The present simple and low-cost process of producing hook-shaped and straight silica wires in bulk may lead to potential applications in catalysts, electrode materials, biosensing, etc.
研究领域:
材料科学
·
纳米技术
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2024
·
IF 5.1
Zhulin Li,Zijin Zhao,Xiaojing Jiang,Yingjuan Fu,Guoyu Tian,Zhaojiang Wang
Carbon hollow microspheres (CHM) have been heralded as a seminal material, manifesting a multifaceted utility in domains such as catalysis, adsorption, energy storage, and conversion. In this study, the present investigation delves into the fabrication of lignin-formaldehyde resin (LFR) carbon hollow microspheres (LFR-CHM) via the nuanced methodologies of spray drying and subsequent carbonization . The precursor for CHM, a thermosetting LFR, was crafted via polycondensation in an alkaline milieu. Precision-tuning of the spray drying parameters enabled the realization of LFR hollow microspheres, characterized by particle diameters spanning 3.37 μm–24.4 μm, and shell thickness between 0.25 μm and 4.0 μm. Adjusting the inlet temperature from 110 to 180 °C resulted in LFR hollow microspheres with varying bulk densities from 0.31 g/cm 3 to 0.49 g/cm 3 . The microporous structure of the LFR-CHM shell exhibited a malleable specific area and pore dimensionality, intricately tethered to the carbonization thermal gradient . Furthermore, changes in crystallinity and chemical bonds of LFR-CHM were noted during carbonization process. Significantly, the residual weight of LFR-CHM reached 52 % after carbonization at 800 °C, underscoring the benefits of using thermosetting lignin-formaldehyde resin as a CHM precursor.
研究领域:
材料科学
·
化学工程
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纳米技术
·
能源存储与转换
✓ 已验证
产品关联
DOI
高影响因子
ENVIRONMENTAL SCIENCE & TECHNOLOGY
·
2025
·
IF 11.3
Liuqian An,Peizhi Wang,Aiwen Wang,Lu Liu,Yu Han,Xi Chen,Yumeng Zhao,Daxiang Yang,Aijie Wang,Jun Ma,Hongbo Xu,Wei Wang
Solar interfacial distillation (SID) is a highly economical and environmentally friendly freshwater obtaining technology. Although the energy efficiency for water evaporation is approaching 100%, the yield of clean liquid water still remains at a relatively low level, primarily due to inefficient condensation driving force and unstable light absorbance caused by uncondensed fog droplets. Here, we present a wavelength-anisotropic conductive interface solar distillation system (WADS) that fundamentally redefines energy flow management. By spectrally decoupling solar absorption (0.2–2.5 μm) from thermal radiation (8–13 μm), WADS achieves the simultaneous enhancement of photothermal conversion and passive radiative cooling. This dual-mode operation enables directional energy transport─sunlight influx through transparent channels and heat dissipation via high-emissivity nanostructures─establishing a self-sustaining thermal gradient that amplifies condensation kinetics while suppressing light scattering. Based on the above design, the clean liquid water production with 3D photothermal component reached 4.03 kg·m–2·h–1 under 1 sun, representing a 10-fold improvement over conventional SID, with nighttime production (0.75 kg·m–2·h–1) through continuous radiative cooling. Beyond desalination, WADS demonstrates a synergistic resource recovery from brines, enabling efficient mineral preconcentration. This integrated energy-loop architecture presents a new paradigm for addressing coupled water-energy-resource challenges.
研究领域:
可再生能源
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水净化技术
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材料科学
·
可持续工程
·
热管理
✓ 已验证
产品关联
DOI
PubMed
高影响因子
ADVANCED FUNCTIONAL MATERIALS
·
2025
·
IF 19
Yaoxuan Cui,Feng Xu,Qingpeng Cao,Libin Qian,Xubin Zheng,Zefeng Shen,Fenni Zhang,Ming Chen,Xiao Liang,Di Wang
Biomimetic olfactory systems utilizing cross-sensitive sensing arrays can detect and discriminate odors–a fundamental perceptual modality lacking in most intelligent systems. A primary implementation barrier lies in the inherent complexity of fabricating heterogeneous sensing arrays. Herein, a laser-programmable direct-writing strategy for single-step fabrication of heterogeneous transition metal oxide (TMO) arrays from a single precursor is reported. By precisely tuning laser parameters, in situ synthesis and continuous compositional modulation of multinary TMO heterostructures are achieved within millisecond timescales. Each fine-tuned TMO demonstrates distinct selectivity, and their combination generates signature patterns for different volatile organic compounds and complex odor mixtures. Phase analysis in combined with density functional theory (DFT) calculations, elucidates that phase transitions among competing oxide phases follow Boltzmann distributions governed by transient thermal gradient dynamics. DFT calculations of the electronic density of states further reveal the gas sensing mechanisms of laser-direct-written TMO heterostructures with varying surface phases. In addition to the new insights into laser-induced phase transformations in TMOs, this work establishes a highly efficient and scalable strategy for fabricating olfactory sensing arrays.
研究领域:
材料科学
·
传感器与传感技术
·
激光加工
·
纳米制造
·
人工嗅觉
·
计算材料科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）