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An inverse opal structure-based human alveolar lung-on-a-chip for the study of Osimertinib treatment in non-small cell lung cancer 认领 引用
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作者 Weifei Zhang Danfeng Xu +5 位作者 Jinru Tian Ying Kan Xuanlin Feng Jia Liu Hongmei Li Nan Li 《Chinese Chemical Letters》 SCIE CAS CSCD 2026年第4期683-687,共5页
The deficiency of reliable and physiologically relevant distal lung models has been regarded as a crucial issue for drug research on non small cell lung cancer(NSCLC).In this study,an inverse opal structure-based lung... The deficiency of reliable and physiologically relevant distal lung models has been regarded as a crucial issue for drug research on non small cell lung cancer(NSCLC).In this study,an inverse opal structure-based lung-on-a-chip was established to replicate the geometric dimensions and topography of the native lung alveoli,and two lateral microchambers were designed to induce pressure-driven stretching for the simulation of respiratory movement.Further,a concentration gradient generator was applied to connect with lung-on-a-chip for the creation of different enzyme environments to mimic the individual variability of P450s enzymes in lung patients.Based on this microfluidic platform,the Osimertinib implications in NSLC was investigated from the aspect of metabolism and adapted resistance.The results suggested that Osimertinib exhibited discernible difference in metabolism under diverse enzyme condition.Additionally,in contrast with the control group,all groups with Osimertinib treatment triggered the alterations of amino acid metabolisms and energy supply,indicating that targeting energy supply process might be an effective measure to prevent tumor cells from generating drug resistance. 展开更多
关键词 Lung-on-a-chip Inverse opal structure Concentration gradient generator Osimertinib metabolism Adapted resistance Amino acid metabolism
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Computational analysis of solar light harvesting properties of TiO2-BiVO4 inverse opals for applications in photocatalysis 认领 引用
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作者 Oumayma Habli Thomas L.Madanu +1 位作者 Bao-Lian Su Olivier Deparis 《Journal of Energy Chemistry》 SCIE EI CAS CSCD 2026年第2期610-621,I0014,共12页
Efficient solar light harvesting is essential for high-performance photocatalysts.Here,Rigorous CoupledWave Analysis(RCWA)computational method is used to investigate and optimize the optical absorption of TiO2-BiVO... Efficient solar light harvesting is essential for high-performance photocatalysts.Here,Rigorous CoupledWave Analysis(RCWA)computational method is used to investigate and optimize the optical absorption of TiO2-BiVO4 inverse opal(IO)structures under varying light incidence angles and pore-filling medium(air or water).Simulations were validated against experimental reflectance data.They revealed that small-pore IOs strongly absorb in the UV-C and UV-B regions due to the slow photon effect,making them ideal for sterilization and water disinfection.Medium-and large-pore IOs benefit from additional slow photon effect at the 2nd order photonic band gap,enhancing absorption across both UV and visible regions.Medium-pore IOs are suited for indoor air treatment and water purification,while large-pore IOs with the highest photon flux enhancement enable solar-driven photocatalysis such as outdoor pollutant removal and hydrogen production.For all tested IO designs,the absorbed photon flux exceeds that of equivalent planar slabs,highlighting the advantage of photonic structuring for sustainable photocatalytic applications. 展开更多
关键词 Inverse Opal RCWA method Slow photon TiO2 BiVO4 Photocatalysis Light harvesting
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A fluorescence-enhanced inverse opal sensing film for multi-sources detection of formaldehyde 认领 引用
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作者 Xiaokang Lu Bo Han +6 位作者 Deyilei Wei Mingzhu Chu Haojie Ma Ran Li Xueyan Hou Yuqi Zhang Jijiang Wang 《Food Science and Human Wellness》 SCIE CAS CSCD 2025年第5期1818-1826,共9页
The SiO2 inverse opal photonic crystals(PC)with a three-dimensional macroporous structure were fabricated by the sacrificial template method,followed by infiltration of a pyrene derivative,1-(pyren-8-yl)but-3-en-1-... The SiO2 inverse opal photonic crystals(PC)with a three-dimensional macroporous structure were fabricated by the sacrificial template method,followed by infiltration of a pyrene derivative,1-(pyren-8-yl)but-3-en-1-amine(PEA),to achieve a formaldehyde(FA)-sensitive and fluorescence-enhanced sensing film.Utilizing the specific Aza-Cope rearrangement reaction of allylamine of PEA and FA to generate a strong fluorescent product emitted at approximately 480 nm,we chose a PC whose blue band edge of stopband overlapped with the fluorescence emission wavelength.In virtue of the fluorescence enhancement property derived from slow photon effect of PC,FA was detected highly selectively and sensitively.The limit of detection(LoD)was calculated to be 1.38 nmol/L.Furthermore,the fast detection of FA(within 1 min)is realized due to the interconnected three-dimensional macroporous structure of the inverse opal PC and its high specific surface area.The prepared sensing film can be used for the detection of FA in air,aquatic products and living cells.The very close FA content in indoor air to the result from FA detector,the recovery rate of 101.5%for detecting FA in aquatic products and fast fluorescence imaging in 2 min for living cells demonstrate the reliability and accuracy of our method in practical applications. 展开更多
关键词 Inverse opal photonic crystals Slow photon effect Fluorescence enhancement Multi-sources detection Formaldehyde
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Immobilization of laccase on magnetic PEGDA-CS inverse opal hydrogel for enhancement of bisphenol A degradation in aqueous solution 认领 引用 被引量：1
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作者 Mei Du Jingzhang Liu +5 位作者 Qiong Wang Fengbang Wang Lei Bi Chunyan Ma Maoyong Song Guibin Jiang 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2025年第1期74-82,共9页
Endocrine disruptors such as bisphenol A(BPA)adversely affect the environment and human health.Laccases are used for the efficient biodegradation of various persistent organic pollutants in an environmentally safe man... Endocrine disruptors such as bisphenol A(BPA)adversely affect the environment and human health.Laccases are used for the efficient biodegradation of various persistent organic pollutants in an environmentally safe manner.However,the direct application of free laccases is generally hindered by short enzyme lifetimes,non-reusability,and the high cost of a single use.In this study,laccases were immobilized on a novel magnetic threedimensional poly(ethylene glycol)diacrylate(PEGDA)-chitosan(CS)inverse opal hydrogel(LAC@MPEGDA@CS@IOH).The immobilized laccase showed significant improvement in the BPA degradation performance and superior storage stability compared with the free laccase.91.1%of 100 mg/L BPA was removed by the LAC@MPEGDA@CS@IOH in 3 hr,whereas only 50.6%of BPA was removed by the same amount of the free laccase.Compared with the laccase,the outstanding BPA degradation efficiency of the LAC@MPEGDA@CS@IOH was maintained over a wider range of pH values and temperatures.Moreover,its relative activity of was maintained at 70.4%after 10 cycles,and the system performed well in actual water matrices.This efficientmethod for preparing immobilized laccases is simple and green,and it can be used to further develop ecofriendly biocatalysts to remove organic pollutants from wastewater. 展开更多
关键词 Bisphenol A removal Laccase immobilization Chitosan Inverse opal hydrogel
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PAM-PAA microgel inverse opal photonic crystal and pH response 认领 引用 被引量：1
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作者 Yong Qiang He Xiao Dong Wang +3 位作者 Jian Ying Wang Yan Feng Yong Qiang Zhao Xiu Dong You 《Chinese Chemical Letters》 SCIE CAS 2007年第11期1395-1398,共4页
The colloidal crystal template or opal with a closed-packed face-centered cubic （fcc） lattice was prepared from monodisperse polystyrene （PS） spheres by vertical sedimentation. The template provided void space for... The colloidal crystal template or opal with a closed-packed face-centered cubic （fcc） lattice was prepared from monodisperse polystyrene （PS） spheres by vertical sedimentation. The template provided void space for infiltration of monomer precursor composed of acrylate acid, acrylamide and ammonium-persulfate, as well as microgel from the subsequent copolymerization. The sample was immersed in dimethylbenzene for completely removing PS spheres to form PAM inverse opal hydrogels （IOHPAM） or PAM/PAA inverse opal hydrogels （IOHPAM/PAA） photonic crystals. The PS spheres were replaced by air spheres, which interconnected each other through the windows. The study of responses to pH show that there are two peaks for both IOHPAM and IOHPAM/PAA films, but the IOHPAM/PAA peaks shift to higher pH, and the peaks are independent with the AA content. 展开更多
关键词 Photonic crystal pH response PAM/PAA Opal Inverse opal hydrogel
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ZnS-opal与反opal结构ZnS光子晶体的组装 认领 引用 被引量：1
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作者 段涛 彭同江 唐永建 《化工进展》 CAS 北大核心 2009年第8期1405-1409,共5页
以单分散SiO2微球为基元,在75%～80%湿度、30～45℃恒温密闭烘箱中垂直快速组装opal模板;以Zn(NO3)(20.035mol/L)、TAA乙醇溶液(0.05mol/L)为前体,通过溶剂热法充填形成ZnS-opal复合光子晶体;ZnS-opal复合光子晶体在2%～5%的HF溶液中浸... 以单分散SiO2微球为基元,在75%～80%湿度、30～45℃恒温密闭烘箱中垂直快速组装opal模板;以Zn(NO3)(20.035mol/L)、TAA乙醇溶液(0.05mol/L)为前体,通过溶剂热法充填形成ZnS-opal复合光子晶体;ZnS-opal复合光子晶体在2%～5%的HF溶液中浸泡4～5h后卸载模板,制得反opal结构ZnS基光子晶体;采用XRD、SEM、UV-Vis测试手段对反opal结构ZnS基光子晶体形貌、物相和光学性能进行了表征。结果表明:溶剂热法多次充填可使ZnS纳米晶在模板密堆积形成的空隙中均匀成核;经过酸处理的ZnS-opal中SiO2微球溶解、坍塌,形成蜂窝状三维有序介孔和反opal结构ZnS基光子晶体;相同粒径SiO2微球组装的opal模板、ZnS-opal以及反opal结构ZnS光子晶体均表现出光子带隙特性,但反opal结构ZnS光子晶体带隙位置相比前两者发生了蓝移。 展开更多
关键词 光子晶体 ZnS opal模扳 反opal结构 二氧化硅微球 自组装
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Design of a ZnO/Poly(vinylidene fluoride)inverse opal film for photon localization-assisted full solar spectrum photocatalysis 认领 引用 被引量：7
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作者 Yukai Chen Yu Wang +4 位作者 Jiaojiao Fang Baoying Dai Jiahui Kou Chunhua Lu Yuanjin Zhao 《Chinese Journal of Catalysis》 SCIE EI CAS CSCD 2021年第1期184-192,共9页
Owing to its photonic band gap(PBG)and slow light effects,aniline black(AB)-poly(vinylidene fluoride)(PVDF)inverse opal(IO)photonic crystal(PC)was constructed to promote the utility of light and realize photothermal s... Owing to its photonic band gap(PBG)and slow light effects,aniline black(AB)-poly(vinylidene fluoride)(PVDF)inverse opal(IO)photonic crystal(PC)was constructed to promote the utility of light and realize photothermal synergetic catalysis.As a highly efficient reaction platform with the capability of restricting heat,a microreactor was introduced to further amplify the photothermal effects of near infrared(NIR)radiation.The photocatalytic efficiency of ZnO/0.5AB-PVDF IO(Z0.5A)increases 1.63-fold compared to that of pure ZnO film under a full solar spectrum,indicating the effectiveness of synergetic promotion by slow light and photothermal effects.Moreover,a 5.85-fold increase is achieved by combining Z0.5A with a microreactor compared to the film in a beaker.The photon localization effect of PVDF IO was further exemplified by finite-difference time-domain(FDTD)calculations.In conclusion,photonic crystal-microreactor enhanced photothermal catalysis has immense potential for alleviating the deteriorating water environment. 展开更多
关键词 Photothermal catalysis Photonic crystal Inverse opal Microreactor ZnO
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Single-material Solvent-sensitive Fluorescent Actuator from Carbon Dots Inverse Opals Based on Gradient Dewetting 认领 引用 被引量：2
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作者 Jun-chao Liu Yuan-yuan Shang +3 位作者 Da-jie Zhang Zheng Xie 胡瑞祥 王京霞 《Chinese Journal of Polymer Science》 SCIE EI CAS CSCD 2017年第9期1043-1043,1044-1050,共1页
A novel solvent-sensitive fluorescent actuator with reversibility has been obtained from carbon dots （CDs） inverse opals, which is prepared via infiltrating CDs solution into the interstice of colloidal crystal temp... A novel solvent-sensitive fluorescent actuator with reversibility has been obtained from carbon dots （CDs） inverse opals, which is prepared via infiltrating CDs solution into the interstice of colloidal crystal template, thermal polymerization of CDs materials and removing the colloidal template. The as-prepared CDs inverse opal actuator shows a bending angle of 75° in 10.2 s, bending rate of 7.35 （°）.s-1. In particular, the fluorescence intensity of the films varies during the actuating process. The actuating behavior is attributed to the inhomogeneous swelling/shrinking of the film, which originates from the gradient dewetting by solvent evaporation and hydrogen-bonding interaction between the solvent molecules and oxygen/hydrogen ions of CDs side chain. The CDs inverse opal actuator has the advantages of quick response, good repeatability and strong fluorescence, which gives an important insight into the design and manufacture of novel and advanced solvent-actuators. 展开更多
关键词 Carbon dots inverse opal Fluorescent Single-material Gradient dewetting Solvent-actuator
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Delicate synthesis of quasi-inverse opal structural Na3V2(PO4)3/N-C and Na4MnV(PO4)3/N-C as cathode for high-rate sodium-ion batteries 认领 引用 被引量：8
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作者 Xin-Ran Qi Yuan Liu +10 位作者 Lin-Lin Ma Bao-Xiu Hou Hong-Wei Zhang Xiao-Hui Li Ya-Shi Wang Yi-Qing Hui Ruo-Xun Wang Chong-Yang Bai Hao Liu Jian-Jun Song Xiao-Xian Zhao 《Rare Metals》 SCIE EI CAS CSCD 2022年第5期1637-1646,共10页
Poor conductivity and sluggish Na+ diffusion kinetic are two major drawbacks for practical application of sodium super-ionic conductor(NASICON) in sodium-ion batteries. In this work, we report a simple approach to ... Poor conductivity and sluggish Na+ diffusion kinetic are two major drawbacks for practical application of sodium super-ionic conductor(NASICON) in sodium-ion batteries. In this work, we report a simple approach to synthesize quasi-inverse opal structural NASICON/N-doped carbon for the first time by a delicate one-pot solution-freeze drying-calcination process, aiming at fostering the overall electrochemical performance. Especially, the quasi-inverse opal structural Na3V2(PO4)3/N-C(Q-NVP/N-C) displayed continuous pores, which provides interconnected channels for electrolyte permeation and abundant contacting interfaces between electrolyte and materials, resulting in faster kinetics of redox reaction and higher proportion of capacitive behavior.As a cathode material for sodium-ion batteries, the Q-NVP/N-C exhibits high specific capacity of 115 mAh·g-1 at 1C, still 61 mAh·g-1 at ultra-high current density of 100C,and a specific capacity of 89.7mAh·g-1 after 2000 cycles at 20C.This work displays the general validity of preparation method for not only Q-NVP/N-C,but also Na3V2(PO4)3,which provides a prospect for delicate synthesis of NASICON materials with excellent electrochemical performance. 展开更多
关键词 Sodium battery Structural regulation Inverse opal structure Sodium super-ionic conductor(NASICON) Na3V2(PO4)3
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Er3+-activated silica inverse opals synthesized by the solgel method 认领 引用 被引量：3
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作者 A. Chiappini C.Armellini +11 位作者 A. Chiasera Y. Jestin M. Ferrari M. Mattarelli M. Montagna E. Moser C. Tosello L. Zampedri G. Nunzi Conti S. Pelli R. M. Almeida G. C. Righini 《Optoelectronics Letters》 2007年第3期184-187,共4页
We present the details of the sol-gel processing used to realize inverse silica opal,where the silica was activated with 0.3 mol% of Er3+ ions. The template(direct opal) was obtained assembling polystyrene spheres of ... We present the details of the sol-gel processing used to realize inverse silica opal,where the silica was activated with 0.3 mol% of Er3+ ions. The template(direct opal) was obtained assembling polystyrene spheres of the dimensions of 260 nm by means of a vertical deposition technique. The Er3+-activated silica inverse opal was obtained infiltrating,into the void of the template,the silica sol doped with Er3+ ions and subsequently removing the polystyrene spheres by means of calcinations. Scanning electron microscope showed that the inverse opals possess a fcc structure with a air hollows of about 210 nm and a photonic band gap,in the visible range,was observed from reflectance measurements. Spectroscopic properties of Er3+-activated silica inverse opal were investigated by luminescence spectroscopy,where,upon excitation at 514.5 nm,an emission of 4I13/2 → 4I15/2 of Er3+ ions transition with a 21 nm bandwidth was observed. Moreover the 4I13/2 level decay curve presents a single-exponential profile,with a measured lifetime of 18 ms,corresponding a high quantum efficiency of the system. 展开更多
关键词 铒掺杂 活性硅 反opal结构 溶胶-凝胶法 合成
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PECVD制备嵌埋在硅槽中的硅反Opal结构 认领 引用 被引量：2
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作者 韩喻 谢凯 +1 位作者 李宇杰 许静 《功能材料与器件学报》 EI CAS 北大核心 2006年第6期537-540,共4页
摸索了利用PECVD方法制备嵌埋于硅槽中Si反Opal结构的工艺条件,探索性研究了射频功率、气体流量、反应室压力、沉积时间和Opal基底状态对填充效果的影响。结果显示射频功率越小,流量越低,反应室压力越大,则反应速率越低,Opal结构内外填... 摸索了利用PECVD方法制备嵌埋于硅槽中Si反Opal结构的工艺条件,探索性研究了射频功率、气体流量、反应室压力、沉积时间和Opal基底状态对填充效果的影响。结果显示射频功率越小,流量越低,反应室压力越大,则反应速率越低,Opal结构内外填充越均匀。同时,在[SiHm]自由基扩散通道不被堵塞的前提下,沉积时间越长,Opal结构排列越规整,则整体填充越致密,越有利于反Opal结构的形成。 展开更多
关键词 PECVD 反Opal结构 Si凹槽
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SiO_2 Opal光子晶体结构周期数对TiO_2染料敏化太阳能电池光电性能的影响 认领 引用 被引量：2
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作者 李萍 徐交 +3 位作者 陈胜利 王爱军 朱慧丽 王媛 《化工进展》 EI CAS CSCD 北大核心 2017年第3期881-886,共6页
通过在N719敏化的纳米晶二氧化钛膜上耦合SiO_2 Opal光子晶体,以此复合膜为光阳极,以敏化二氧化钛与无序SiO_2的复合膜为参比膜,考察了SiO_2 Opal光子晶体结构周期数对电池光电性能的影响。SiO_2 Opal光子晶体的结构周期数由制备光子晶... 通过在N719敏化的纳米晶二氧化钛膜上耦合SiO_2 Opal光子晶体,以此复合膜为光阳极,以敏化二氧化钛与无序SiO_2的复合膜为参比膜,考察了SiO_2 Opal光子晶体结构周期数对电池光电性能的影响。SiO_2 Opal光子晶体的结构周期数由制备光子晶体时的沉积液浓度控制。实验结果表明复合光子晶体后,电池的短路电流密度ISC和能量转化效率Eff明显提高,且光子晶体周期数越多,提高率越大,当SiO_2 Opal结构周期数增加至20层时,ISC和Eff与参比膜相比分别增加了91%和164%。IPCE分析表明光电性能提高的原因在于当光子晶体带隙与N719吸收峰重合时,利用光子带隙反射与光局域效应可提高N719对波长530nm光的吸收率。即光子晶体可有效提高吸光材料在光子带隙处的吸光率,且随着光子周期数增加,提升效果越显著。 展开更多
关键词 二氧化硅 太阳能 纳米材料 SiO2 Opal光子晶体 结构周期数 纳米晶TiO2 染料敏化电池
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Hierarchically Inverse Opal Porous Scaffolds from Droplet Microfluidics for Biomimetic 3D Cell Co-Culture 认领 引用 被引量：1
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作者 Changmin Shao Yuxiao Liu +2 位作者 Junjie Chi Fangfu Ye Yuanjin Zhao 《Engineering》 SCIE EI CAS CSCD 2021年第12期1778-1785,共8页
With the advantages of better mimicking the specificity of natural tissues,three-dimensional(3D)cell culture plays a major role in drug development,toxicity testing,and tissue engineering.However,existing scaffolds or... With the advantages of better mimicking the specificity of natural tissues,three-dimensional(3D)cell culture plays a major role in drug development,toxicity testing,and tissue engineering.However,existing scaffolds or microcarriers for 3D cell culture are often limited in size and show suboptimal performance in simulating the vascular complexes of living organisms.Therefore,we present a novel hierarchically inverse opal porous scaffold made via a simple microfluidic approach for promoting 3D cell co-culture techniques.The designed scaffold is constructed using a combined concept involving an emulsion droplet template and inert polymer polymerization.This work demonstrates that the resultant scaffolds ensure a sufficient supply of nutrients during cell culture,so as to achieve large-volume cell culture.In addition,by serially planting different cells in the scaffold,a 3D co-culture system of endothelial-cellencapsulated hepatocytes can be developed for constructing certain functional tissues.It is also demonstrated that the use of the proposed scaffold for a co-culture system helps hepatocytes to maintain specific in vivo functions.These hierarchically inverse opal scaffolds lay the foundation for 3D cell culture and even the construction of biomimetic tissues. 展开更多
关键词 Microfluidics Inverse opal Cell culture Droplet Biomaterial
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类Opal光子晶体红外区安德森定域化理论研究 认领 引用 被引量：2
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作者 田贵才 姜成果 贾继奎 《原子与分子物理学报》 CAS 北大核心 2008年第1期165-168,共4页
本文根据Mie散射理论和低浓度近似下,对在中红外区高折射率半导体材料AlP等做为散射体的类Opal光子晶体的安德森定域化进行了理论研究,发现在浓度为10%,折射率比值大于3.8,无吸收状态下,此类晶体将出现两个定域化区.同时为此类晶体的定... 本文根据Mie散射理论和低浓度近似下,对在中红外区高折射率半导体材料AlP等做为散射体的类Opal光子晶体的安德森定域化进行了理论研究,发现在浓度为10%,折射率比值大于3.8,无吸收状态下,此类晶体将出现两个定域化区.同时为此类晶体的定域化研究提供了一个比较理想的处理方法. 展开更多
关键词 安德森定城化 Opal 光子晶体 Mie散射
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Thermal-responsive Photonic Crystals based on Physically Cross-linked Inverse Opal Nanocomposite Hydrogels 认领 引用 被引量：1
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作者 ZHENG Hang LI Jin +3 位作者 SONG Weizheng HE Guangyao WANG Yifeng CHEN Yanjun 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2021年第2期289-296,共8页
A thermal-responsive photonic crystal material was fabricated by forming an inverse opal nanocomposite hydrogel of poly(N-isopropylacrylamide)(IONHPNIPAm)within the interstitial space of a polystyrene photonic crystal... A thermal-responsive photonic crystal material was fabricated by forming an inverse opal nanocomposite hydrogel of poly(N-isopropylacrylamide)(IONHPNIPAm)within the interstitial space of a polystyrene photonic crystal template.In IONHPNIPAm,PNIPAm were physically cross-linked with two kinds of nanoparticles(carbon dots and laponite clays).The integration of carbon dots and laponite clays for physical crosslinking endowed IONHPNIPAm sufficient strength and self-healing property.IONHPNIPAm films can be completely peeled from the substrates to be utilized as an independent photonic crystal material.The structural color and optical diffraction of the IONHPNIPAm exhibits a rapid reversible change in response to external thermal stimuli due to its physical cross-linking feature.Moreover,the IONHPNIPAm shows clear fluorescence due to the introduction of carbon dots,which enables a convenient way for chemical detection(such as the detection of silver ions).This stimuli-responsive photonic crystal materials based on physically cross-linked inverse opal nanocomposite hydrogels with fast response and good mechanical stability are promising for applications in the fields of smart optical detectors,thermal-responsive sensors and chemical detectors. 展开更多
关键词 photonic crystals inverse opal physical cross-linking thermal-responsive nanocomposite hydrogel
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Mineralogy and Thermal Analysis of Natural Pozzolana Opal Shale with Nano-pores 认领 引用 被引量：2
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作者 贾援 王宝民 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS 2017年第3期532-537,共6页
Thermodynamic stability, microvoid distribution and phases transformation of natural pozzolana opal shale（POS） were studied systematically in this work. XRD analysis showed that opal-CT, including microcrystal crist... Thermodynamic stability, microvoid distribution and phases transformation of natural pozzolana opal shale（POS） were studied systematically in this work. XRD analysis showed that opal-CT, including microcrystal cristobalite and tridymite, is a major component of POS. DTA and FT-IR indicated that there were many hydroxyl groups and acid sites on the surface of amorphous SiO2 materials. FE-SEM analysis exhibited amorphous SiO2 particles（opal-A） covering over stacking sequences microcrystal cristobalite and tridymite. Meanwhile, MIP analysis demonstrated that porosity and pore size distribution of POS remained uniform below 600 ℃. Because stable porous microstructure is a key factor in improving photocatalyst activity, POS is suited to preparing highly active supported. 展开更多
关键词 pozzolana opal shale cyclic utilization thermal analysis mineralogy analysis nano-pore
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在单晶硅片上直接电化学沉积制备镍反opal光子晶体 认领 引用 被引量：1
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作者 许静 《国防科技大学学报》 EI CAS CSCD 北大核心 2012年第5期36-39,共4页
采用电化学沉积工艺直接向组装在单晶硅片上的聚苯乙烯胶体晶体中填充金属Ni,成功制备了Ni的反opal光子晶体。采用线性扫描伏安法研究了单晶硅表面的化学刻蚀对Ni的电化学沉积过程的影响,并采用扫描电子显微镜(SEM)、X射线衍射等对Ni反o... 采用电化学沉积工艺直接向组装在单晶硅片上的聚苯乙烯胶体晶体中填充金属Ni,成功制备了Ni的反opal光子晶体。采用线性扫描伏安法研究了单晶硅表面的化学刻蚀对Ni的电化学沉积过程的影响,并采用扫描电子显微镜(SEM)、X射线衍射等对Ni反opal光子晶体的形貌和结构进行了观察分析,对其光学性能进行了初步研究。研究结果表明,对单晶硅片表面进行化学刻蚀有利于金属Ni的电化学沉积;在PS胶体晶体模板中电化学生长的金属Ni呈多晶状态,去除模板后形成了金属Ni的有序多孔结构。 展开更多
关键词 光子晶体 电化学沉积 Ni反opal
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Fabrication of BaTiO_3 Inverse Opal Photonic Crystal 认领 引用 被引量：3
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作者 AnXIANG JianPingGAO HongKuiCHEN JiuGaoYU RuiXianLIU 《Chinese Chemical Letters》 SCIE CAS 2004年第2期228-230,共3页
The colloidal crystal template or opal with a closed-packed face centered cubic (fcc) lattice, was prepared from monodisperse polystyrene (PS) spheres by gravity sedimentation. The template was used for the generation... The colloidal crystal template or opal with a closed-packed face centered cubic (fcc) lattice, was prepared from monodisperse polystyrene (PS) spheres by gravity sedimentation. The template was used for the generation of photonic crystal. The template provided void space for infiltration of liquid precursor composed of titanium butyloxide, barium acetate, ethanol, and acetic acid. The opal composite was hydrolyzed, dried, sintered by heating for completely removing PS spheres to form BaTiO3 photonic crystals with inverse opal structure. The PS spheres were replaced by air spheres, which interconnected each other through the windows on the BaTiO3 wall. So both the BaTiO3 wall and air void constitute continuous phases. 展开更多
关键词 Photonic crystal barium titanate opal inverse opal.
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Upconversion luminescence and color tunable properties in Yb-Tb codoped Ca0.15Zr0.85O1.85 inverse opal 认领 引用
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作者 李俊 杨朝宁 +7 位作者 杨正文 严冬 吴航俊 廖佳燕 邱建备 宋志国 杨勇 周大成 《Journal of Rare Earths》 SCIE EI CAS CSCD 2012年第12期1191-1194,共4页
The upconversion （UC） luminescence and color tunable properties of Tb3＋ ions were investigated by steady spectral under 980 LD excitation in the Cao.15ZrO.8501.85：Yb,Tb inverse opals fabricated by the self-assembl... The upconversion （UC） luminescence and color tunable properties of Tb3＋ ions were investigated by steady spectral under 980 LD excitation in the Cao.15ZrO.8501.85：Yb,Tb inverse opals fabricated by the self-assembly technique in combination with a sol-gel method. The inhibition of UC emission was inspected if the Tb3＋ UC emission band was in the regions of the photonic bandgap, while enhancement of the UC emission occurred if the UC emission band located at the edge of the bandgap. Color modification of the UC emission was successfully obtained by the suppression or enhancement effect of the photonic band gap on the UC emission. 展开更多
关键词 upconversion inverse opal photonic band gap Cao.15ZrO.8501.85：Yb,Tb rare earths
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Preparation and optical properties of tin dioxide inverse opal film 认领 引用
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作者 Jin-Quan Wang Yuan-Yuan Wu +2 位作者 Sai-Sai Yuan Ming Zhang Xiao-Bing Chen 《Rare Metals》 SCIE EI CAS CSCD 2022年第3期1032-1036,共5页
As a novel structure, inverse opal, with threedimensional periodic macropore and mesopore and huge specific surface area, has great promising applications. In this paper, tin dioxide (SnO2) inverse opal films were ... As a novel structure, inverse opal, with threedimensional periodic macropore and mesopore and huge specific surface area, has great promising applications. In this paper, tin dioxide (SnO2) inverse opal films were prepared with sol–gel method by cooperative opal template. The surface morphologies of SnO2inverse opal films were examined by scanning electron microscopy (SEM), the inner structure of SnO2inverse opal films was examined by transmission electron microscopy (TEM), the optical properties of SnO2inverse opal films were studied and discussed in detail. Optical reflectance spectra reveal that, for the opal films, the wavelengths of the reflectance peak confirmed by the experimental reflectance spectra are consistent with the theoretical values;for the SnO2inverse opal films, the wavelengths of the reflectance peak confirmed by the experimental reflectance spectra deviate from theoretical values largely. 展开更多
关键词 SnO2 Inverse opal Preparation Optical property
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