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学者姓名：杨森
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Abstract ：
In nature, many organisms (e.g., chameleons) protect themselves by changing their colors in response to environmental changes. Inspired by these organisms, we present a multi-responsive, flexible, and structurally colored hydrogel film with a one-dimensional (1D) ordered periodic groove structure. The groove structure endows the filmwith bright, highly angle-dependent structural colors, which can be reversibly tuned by stretching and releasing. In addition, because of the thermosensitive properties of the hydrogel, the film can be switched between colored state and opaque white state with temperature. In addition, the optical state of the film is sensitive to solvent and can be reversibly changed between colored state and transparent state with soaking and evaporation of the solvent. This reversible, multi-responsive, flexible, and structurally colored hydrogel film has great potential to be used in the fields of color display, sensors, anti-counterfeiting, and so on because of its flexible and diverse tuningmethods, excellent optical performance, and convenient preparation process.
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| GB/T 7714 | Wen, Xiaoxiang , Lu, Xuegang , Li, Jianing et al. Multi-responsive, flexible, and structurally colored film based on a 1D diffraction grating structure [J]. | ISCIENCE , 2022 , 25 (4) . |
| MLA | Wen, Xiaoxiang et al. "Multi-responsive, flexible, and structurally colored film based on a 1D diffraction grating structure" . | ISCIENCE 25 . 4 (2022) . |
| APA | Wen, Xiaoxiang , Lu, Xuegang , Li, Jianing , Wei, Chaoping , Qin, Hongji , Liu, Yuting et al. Multi-responsive, flexible, and structurally colored film based on a 1D diffraction grating structure . | ISCIENCE , 2022 , 25 (4) . |
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Abstract ：
Structural colors derived from nature have attracted extensive interest due to their unique optical performances and various applications in the field of biomimetic optics. Many organisms have evolved different strategies to respond to external stimuli, so as to obtain attention or hide themselves by changing their surface color. Inspired by this, various biomimetic micro/nanostructures with periodic size have been developed and realized tunable structural colors. Functional materials utilizing the synergy of thermal polymer and photonic microstructure to realize the temperature-responsive structural colors have broad application prospects in the fields of sensor, display, anti-counterfeiting and biomedical treatments, etc. In this review, the research progress on photonic crystals or other mechanisms for generating structural colors with various thermo-sensitive polymers is systematically summarized. The artificial systems with diverse types of temperature-stimulated reactions are presented. Finally, emerging research directions and current challenges in this field are also discussed.
Keyword ：
Color-changing Photonic materials Shape-memory Structural colors Thermo-responsive
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| GB/T 7714 | Wei, Chaoping , Lu, Xuegang , Wen, Xiaoxiang et al. Thermo-responsive color-changeable photonic materials: A review [J]. | OPTICS AND LASER TECHNOLOGY , 2022 , 152 . |
| MLA | Wei, Chaoping et al. "Thermo-responsive color-changeable photonic materials: A review" . | OPTICS AND LASER TECHNOLOGY 152 (2022) . |
| APA | Wei, Chaoping , Lu, Xuegang , Wen, Xiaoxiang , Liu, Yuting , Yang, Sen . Thermo-responsive color-changeable photonic materials: A review . | OPTICS AND LASER TECHNOLOGY , 2022 , 152 . |
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Abstract ：
The charge density wave (CDW) states of two-dimensional transition metal dichalcogenides (TMDs) originate from intrinsic couplings between the electronic structures and lattice distortion, inducing interesting physical and chemical properties. The observed TMDs CDW states are mostly nonmagnetic (NM) but with a few ferromagnetic (FM) cases. Physical mechanisms for the formation of FM CDW remain elusive. In this paper, we used density functional theory calculations to study a set of TMDs with magnetic transition metal elements (e.g., V, Cr, and Mn). We found that the FM state can stem from the direct exchange to superexchange transition (e.g., CrX2) or the M-M (M is the metal atom) dimerization (e.g., MnX2). A crystal structure distortion index is proposed to distinguish the different formation mechanisms of FM CDW states. Interestingly, CrX2 has both NM and FM CDW states, which is not observed in other TMDs materials. We found that charge (electron or hole) doping could modulate the different formation mechanisms and induce a phase transition between these two CDW states in CrS2, leading to significant actuation strain output (i.e., 12.17% and 5.93% along x and y directions, respectively) and drastic change of magnetism, which could enable some multifunctionality applications of TMD materials.
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| GB/T 7714 | Chen, Kaiyun , Deng, Junkai , Kan, Dongxiao et al. Ferromagnetic and nonmagnetic 1T ' charge density wave states in transition metal dichalcogenides: Physical mechanisms and charge doping induced reversible transition [J]. | PHYSICAL REVIEW B , 2022 , 105 (2) . |
| MLA | Chen, Kaiyun et al. "Ferromagnetic and nonmagnetic 1T ' charge density wave states in transition metal dichalcogenides: Physical mechanisms and charge doping induced reversible transition" . | PHYSICAL REVIEW B 105 . 2 (2022) . |
| APA | Chen, Kaiyun , Deng, Junkai , Kan, Dongxiao , Yan, Yuan , Shi, Qian , Huo, Wangtu et al. Ferromagnetic and nonmagnetic 1T ' charge density wave states in transition metal dichalcogenides: Physical mechanisms and charge doping induced reversible transition . | PHYSICAL REVIEW B , 2022 , 105 (2) . |
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Abstract ：
Ferroelectric materials at morphotropic phase boundary (MPB) exhibit large piezoelectric coefficients and thus are widely used as piezoelectric actuators and sensors. Three different phase diagram topologies have been reported in various ferroelectric MPB systems: one with a cubic(C)-tetragonal(T)-orthorhombic(O)-rhombohedral(R) quadruple point; another with a C-T-R triple point and the other with a C-T-R along with a T-O-R triple point. However, it is unclear which phase diagram topology would give the best piezoelectric property. Here in this work, we obtain the above three different MPB phase diagram topologies by Landau free energy. It was found that among the three phase diagram topologies, the one with a T-O-R triple point exhibits superior piezoelectric property at the T-O-R triple point because of the small polarization anisotropy required by the simultaneous thermodynamic equilibrium of three ferroelectric phases. This work could guide the design of piezoelectric materials.
Keyword ：
ferroelectricity Morphotropic phase boundary phase diagram piezoelectricity
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| GB/T 7714 | Tian, Ben , Ke, Xiaoqin , Hong, Zhengkai et al. Topology of ferroelectric phase diagrams with morphotropic phase boundary and their piezoelectric properties [J]. | PHASE TRANSITIONS , 2022 , 95 (3) : 193-201 . |
| MLA | Tian, Ben et al. "Topology of ferroelectric phase diagrams with morphotropic phase boundary and their piezoelectric properties" . | PHASE TRANSITIONS 95 . 3 (2022) : 193-201 . |
| APA | Tian, Ben , Ke, Xiaoqin , Hong, Zhengkai , Chen, Zhang , Zhou, Chao , Wang, Yu et al. Topology of ferroelectric phase diagrams with morphotropic phase boundary and their piezoelectric properties . | PHASE TRANSITIONS , 2022 , 95 (3) , 193-201 . |
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Abstract ：
Monolayer two-dimensional transition metal dichalcogenides (TMDs) with direct band gaps, such as MoS2, have received great attention from researchers due to their peculiar band structure and physical properties. However, their extremely small thickness (0.65 nm for MoS2) results in a critically low light absorption efficiency, thus limiting their optoelectronic applications. To achieve the enhancement of the light-matter interaction in MoS2, a resonant Al/AAO (anodic alumina oxide template)/MoS2 trilayer nanocavity structure was designed and implemented in the present study. In such a system, the appropriate change in pore size and pore depth of the AAO template via control of the growth conditions allows one to adjust the thickness and refractive index of the dielectric layer (AAO). This nanocavity structure provides a possible way to regulate the light-matter interaction of MoS2 film.
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| GB/T 7714 | Deng, Chenhua , Kang, Kaifei , Yu, Zhonghai et al. Enhanced photoresponse of a MoS2 monolayer using an AAO template [J]. | RSC ADVANCES , 2021 , 11 (54) : 34410-34415 . |
| MLA | Deng, Chenhua et al. "Enhanced photoresponse of a MoS2 monolayer using an AAO template" . | RSC ADVANCES 11 . 54 (2021) : 34410-34415 . |
| APA | Deng, Chenhua , Kang, Kaifei , Yu, Zhonghai , Zhou, Chao , Yang, Sen . Enhanced photoresponse of a MoS2 monolayer using an AAO template . | RSC ADVANCES , 2021 , 11 (54) , 34410-34415 . |
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Abstract ：
Fluorescence detection is actually available on measuring substances by using metal-based micro or nano structures which produce a great surface enhanced fluorescence (SEF) effect in quick response to endless diseases and environmental problems recently. However, traditional SEF substrates are expensive, as well as inefficient due to single-component detection mode. Therefore, SEF substrates with controllable fluorescence enhancement formed by magnetically responsive CoFe2O4@SiO2@Ag colloidal photonic crystals were designed in this work. The fluorescence spectra were enhanced selectively at different wavelength owing to photonic band gap adjusted by magnetic field so as to detect Rhodamine B (RB) and fluorescein isothiocyanate (FITC) which had quite different fluorescence emission wavelength. As-prepared composites showed that the highest enhancement factors were 12.6 and 17.6 fold for RB and FITC, respectively, only when the tunable photonic band gap matched with the fluorescence emission wavelength of fluorescent molecules. The mechanism of significant fluorescence enhancement was explained in detail. The CoFe2O4@SiO2@Ag substrates were confirmed to be reliable, sensitive and reproducible in detecting a variety of fluorescent molecules. The results played an important role in effective fluorescence detection, such as chemical analysis, biological sensing and cell imaging.
Keyword ：
Colloidal photonic crystals Fluorescence emission Magnetically responsive Photonic band gap Surface enhanced fluorescence
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| GB/T 7714 | Li, Yanlin , Lu, Xuegang , Yang, Sen . Preparation and properties of silver-deposited magnetically responsive colloidal photonic crystals for significant fluorescence enhancement [J]. | OPTICAL MATERIALS , 2021 , 122 . |
| MLA | Li, Yanlin et al. "Preparation and properties of silver-deposited magnetically responsive colloidal photonic crystals for significant fluorescence enhancement" . | OPTICAL MATERIALS 122 (2021) . |
| APA | Li, Yanlin , Lu, Xuegang , Yang, Sen . Preparation and properties of silver-deposited magnetically responsive colloidal photonic crystals for significant fluorescence enhancement . | OPTICAL MATERIALS , 2021 , 122 . |
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Abstract ：
1T-MoS2 is currently under intensive research, because it is a thermodynamically metastable metallic phase with a super electronic conductivity. However, the instability and finite specific capability of 1T-MoS2 hinder its application in batteries. Herein, 1T-MoS2 grown on hollow carbon fiber backbones and coated by a layer of carbon through N-S bond is synthesized by a simple hydrothermal method. N-S bond on the carbon expands the interplanar spacing of 1T-MoS2, which can accommodate more Li+ and improve electronic conductivity. Besides, the carbon coating of 1T-MoS2 grown on hollow carbon fiber backbones is a strong chemical coupling between 1T-MoS2 and the outer carbon matrix by N-S bond, providing a good stable structure on cycling. As a anode material for lithium-ion batteries, the obtained C@MoS2@C nanotubes showed a super capacity (737 mAh g(-1)) at high current density (2 A g(-1)) with long-life cycling (1200 cycles). (C) 2020 Elsevier B.V. All rights reserved.
Keyword ：
Chemical coupling C@MoS2@C nanotubes Lithium ion batteries N-S bond Structural stability
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| GB/T 7714 | Zong, Jingui , Wang, Fei , Zhao, Jiangping et al. Rational design of strong chemical coupling carbon coated N-doped C@MoS2@C nanotubes for high-performance lithium storage [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 861 . |
| MLA | Zong, Jingui et al. "Rational design of strong chemical coupling carbon coated N-doped C@MoS2@C nanotubes for high-performance lithium storage" . | JOURNAL OF ALLOYS AND COMPOUNDS 861 (2021) . |
| APA | Zong, Jingui , Wang, Fei , Zhao, Jiangping , Fan, Xing , Zhao, Mingshu , Yang, Sen et al. Rational design of strong chemical coupling carbon coated N-doped C@MoS2@C nanotubes for high-performance lithium storage . | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 861 . |
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Abstract ：
Bright structural colors with an angular-independent character are in increasing demand in many fields such as pigments, buildings, sensors, color displays, and anti-counterfeiting labels. However, the structural colors produced by amorphous colloidal assemblies with low refractive index contrast or without black additives often exhibit low color visibility and low liquid-bleaching resistibility. Herein, large-scale and angle-independent structural colors were constructed from Fe3O4@SiO2 colloidal quasi-amorphous arrays (QAAs) prepared through a rapid "spraying" process. Due to the high-refractive-index and intrinsic black nature of Fe3O4, the coatings exhibit high brightness of structural colors even on white substrates under ambient lighting conditions. Moreover, as-obtained structural colors possess the ability of antiliquid bleaching and solvent-responsiveness. More importantly, flexible Fe3O4@SiO2/PDMS photonic paper can be fabricated by permeation of PDMS into the voids of Fe3O4@SiO2 colloidal QAAs. This QAAs-based photonic paper shows the ability to infuse silicone oils into its structure, locally swelling it and changing the reflected color. In turn, the resulting colored patterns can be easily erased by applying ethanol or low molecular weight silicone oils. The as-prepared photonic paper exhibits excellent durability and is rewritable at least 50 times without any significant changes in performance. Compared with the traditional long-range ordered photonic crystals, the rapidly prepared QAAs-based photonic coatings have unique advantages in the applications of permanents, color coatings, color printing, liquid colorimetric sensors, rewritable photonic paper, etc. because of the good structural color performance and are suitable for rapid and large-area preparation.
Keyword ：
anti-liquid bleaching high-refractive-index quasi-amorphous structures rewritable photonic paper solvent-responsiveness structural color
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| GB/T 7714 | Wen, Xiaoxiang , Lu, Xuegang , Wei, Chaoping et al. Bright, Angle-Independent, Solvent-Responsive, and Structurally Colored Coatings and Rewritable Photonic Paper Based on High-Refractive-Index Colloidal Quasi-Amorphous Arrays [J]. | ACS APPLIED NANO MATERIALS , 2021 , 4 (9) : 9855-9865 . |
| MLA | Wen, Xiaoxiang et al. "Bright, Angle-Independent, Solvent-Responsive, and Structurally Colored Coatings and Rewritable Photonic Paper Based on High-Refractive-Index Colloidal Quasi-Amorphous Arrays" . | ACS APPLIED NANO MATERIALS 4 . 9 (2021) : 9855-9865 . |
| APA | Wen, Xiaoxiang , Lu, Xuegang , Wei, Chaoping , Li, Jianing , Li, Yanlin , Yang, Sen . Bright, Angle-Independent, Solvent-Responsive, and Structurally Colored Coatings and Rewritable Photonic Paper Based on High-Refractive-Index Colloidal Quasi-Amorphous Arrays . | ACS APPLIED NANO MATERIALS , 2021 , 4 (9) , 9855-9865 . |
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Abstract ：
The exchange bias (EB) effect is the physical cornerstone of magnetic storage and spin valves. The traditional EB effect is always realized under cooling field at low temperatures, which greatly restricts the practical application of the EB effect. In this work, an unusual positive EB effect after the zero-field cooling can be observed in Co-CoO film at room-temperature. The reason for this phenomenon is that the film is composed of crystallized Co/CoO and amorphous Co + CoO, and thus there is an exchange interaction between ferromagnetic, antiferromagnetic and uncompensated antiferromagnetic. © 2021 Elsevier B.V.
Keyword ：
Antiferromagnetism Cobalt compounds Cooling Interfaces (materials) Magnetic storage Nanocomposite films Nanocomposites Sputtering Thin films
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| GB/T 7714 | Tian, Fanghua , Guo, Jiale , Zhao, Qizhong et al. Unusual positive exchange bias after Zero-Field cooling at room temperature in the Co-CoO film composed of amorphous Co + CoO and crystallized Co/CoO [J]. | Materials Letters , 2021 , 293 . |
| MLA | Tian, Fanghua et al. "Unusual positive exchange bias after Zero-Field cooling at room temperature in the Co-CoO film composed of amorphous Co + CoO and crystallized Co/CoO" . | Materials Letters 293 (2021) . |
| APA | Tian, Fanghua , Guo, Jiale , Zhao, Qizhong , Li, Kaili , Cao, Kaiyan , Dai, Zhiyong et al. Unusual positive exchange bias after Zero-Field cooling at room temperature in the Co-CoO film composed of amorphous Co + CoO and crystallized Co/CoO . | Materials Letters , 2021 , 293 . |
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Abstract ：
SnO2 is one of the classic high-capacity anode candidates for lithium-ion batteries (LIBs). However, its practical application is limited by its low electrical conductivity and inferior cycling performance, where the poor cycle performance is mainly caused by large volume changes during the charging/discharging process. In this work, unique thermally reshaped polyvinylpyrrolidone/SnO2@p-toluenesulfonic acid-doped poly-pyrrole (T-PVP/SnO2@D-PPy) nanocables have been prepared by a combination of electrospinning and chemical synthesis. The T-PVP/SnO2@D-PPy nanocables have a wrapped nanoarchitecture providing a strong synergistic effect, which results in high conductivity and small volume changes during the charging/discharging processes. The T-PVP/SnO2@D-PPy nanocables could deliver a high reversible capacity of 858.2 mAh g(-1) after 200 cycles at a current density of 100 mA g(-1), indicating the outstanding electrochemical performance. This work provides an elegant method to improve the electrochemical performance of SnO2-based anodes for next-generation lithium-ion batteries and energy storage systems. (C) 2021 Elsevier B.V. All rights reserved.
Keyword ：
Lithium-ion battery Nanocables Polypyrrole Polyvinylpyrrolidone SnO2
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| GB/T 7714 | Tian, Fanghua , Zhang, Yanjun , Liu, Li et al. Thermally reshaped polyvinylpyrrolidone/SnO2@p-toluenesulfonic acid-doped polypyrrole nanocables with high capacity and excellent cycle performance as anode for lithium-ion batteries [J]. | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 867 . |
| MLA | Tian, Fanghua et al. "Thermally reshaped polyvinylpyrrolidone/SnO2@p-toluenesulfonic acid-doped polypyrrole nanocables with high capacity and excellent cycle performance as anode for lithium-ion batteries" . | JOURNAL OF ALLOYS AND COMPOUNDS 867 (2021) . |
| APA | Tian, Fanghua , Zhang, Yanjun , Liu, Li , Shi, Qian , Li, Jianing , Zhao, Qizhong et al. Thermally reshaped polyvinylpyrrolidone/SnO2@p-toluenesulfonic acid-doped polypyrrole nanocables with high capacity and excellent cycle performance as anode for lithium-ion batteries . | JOURNAL OF ALLOYS AND COMPOUNDS , 2021 , 867 . |
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