The structural feature shown on a remote sensing image is a synthetic result ofcombination of the deformations produced during the entire geological history of an area.Therefore, the respective tectonic stress field o...The structural feature shown on a remote sensing image is a synthetic result ofcombination of the deformations produced during the entire geological history of an area.Therefore, the respective tectonic stress field of each of the different stages in the complexdeformation of an area can be reconstructed in three steps: (1) geological structures formed atdifferent times are distinguished in remote sensing image interpretation; (2) structuraldeformation fields at different stages are determined by analyzing relationships betweenmicrostructures (joints and fractures) and the related structures (folds and faults); and (3)tectonic stress fields at different stages are respectively recovered through a study of the featuresof structural deformation fields in different periods. Circular structures and related circlular and radial joints are correlated in space to con-cealed structural rises. The authors propose a new method for establishing a natural model ofthe concealed structural rises and calculating the tectonic stress field by using quantitative dataof the remote sensing information of circular structures and related linear structures.展开更多
Monolayer of polymer latex spheres was prepared at the air/water interface and deposited onto glass slides through Langmuir-Blodgett （LB） technique. Large-scale, high quality hexagonally close-packed domains were fo...Monolayer of polymer latex spheres was prepared at the air/water interface and deposited onto glass slides through Langmuir-Blodgett （LB） technique. Large-scale, high quality hexagonally close-packed domains were found in scanning electron microscopic pictures. Details of the monolayer-forming ability were discussed. Suitable surface characteristics of the colloidal particles, especially the hydrophilic and hydrophobic properties, are the keys for the formation of ordered monolayer films. The film can be transferred onto various kinds of substrates, even high curvature surface articles, such as fibers, decorations etc, can also be used as substrates. The advantages of this fabrication method of polymer latex spheres monolayer are fast, flexible, simple and very neat.展开更多
Natural photonic structure with tunable structural colours is one of the most miraculous structures which always catches our eyes. However, the application of artificial photonic structures is limited. Moreover, becau...Natural photonic structure with tunable structural colours is one of the most miraculous structures which always catches our eyes. However, the application of artificial photonic structures is limited. Moreover, because of the ability of tunable colours, photonic structure is the excellent candidate for many fields, such as sensor, bioassay, anti-counterfeiting, optical components, photocatalytic, fibers and fabrics. Considering the superior tunable optical property and other excellent performance such as robust mechanical strength, wettability, there are new domains and novel routes for this material that deserve us to explore. In this review, some natural photonic structures are discussed. Some novel fabrication methods and applications will be mentioned in this article. Furthermore, this review provides an insight and outlook for the photonic material with tunable eolours focusing on fabrication, design and applications.展开更多
The present work reports microstructure-based wettability and reflectance responses of three varieties of Indian Rosaceae （Rosa） cultivars, viz. white rose （Rosa chinensis var spontanea）, light pink rose （Rosa eh...The present work reports microstructure-based wettability and reflectance responses of three varieties of Indian Rosaceae （Rosa） cultivars, viz. white rose （Rosa chinensis var spontanea）, light pink rose （Rosa ehinensis var minima） and dark pink rose （Rosa chinensis var minima）. As for wettability, static and advancing and receding Contact Angles （CA） have been measured, for each type of matured rose petals. The surface roughness factors （rφ）, which are largely dependent on the micro-papillae assembly within the rose petal, are estimated to be, 2.74, 2.27 and 2.94 in case of White （W）, Light Pink （LP） and Dark Pink （DP） petals; respectively. Moreover, the respective Contact Angle Hysteresis （CAH） values are measured as 51 °, 27° and 59°. In order to exploit structural colouration through the reflectance char- acteristics, the specimens were dipped in three different media of different Refractive Indices （R1）, viz. ethanol （RI = 1.36）, propanol （RI= 1.39） and glycerine （R/= 1.47） for about 24 h. Upon ethanol and propanol adsorption, the LP and DP rose petals showed unusually similar reflectance patterns over a wide range of wavelengths, thus indicating a common microstructural share and structural colour contribution. The wetting-dewetting and structural colouration in natural systems, to a great extent, are dictated by the surface structure and solid-liquid and liquid-air interfaces, not only offer fundamental interest but also give scope for mimicking in artificial designs of technological interest.展开更多
基金This study was sponsored by The Open Research Laboratory of Quantitative Prediction,Exploration and Assessment of Mineral Resources,MGMR,China.
文摘The structural feature shown on a remote sensing image is a synthetic result ofcombination of the deformations produced during the entire geological history of an area.Therefore, the respective tectonic stress field of each of the different stages in the complexdeformation of an area can be reconstructed in three steps: (1) geological structures formed atdifferent times are distinguished in remote sensing image interpretation; (2) structuraldeformation fields at different stages are determined by analyzing relationships betweenmicrostructures (joints and fractures) and the related structures (folds and faults); and (3)tectonic stress fields at different stages are respectively recovered through a study of the featuresof structural deformation fields in different periods. Circular structures and related circlular and radial joints are correlated in space to con-cealed structural rises. The authors propose a new method for establishing a natural model ofthe concealed structural rises and calculating the tectonic stress field by using quantitative dataof the remote sensing information of circular structures and related linear structures.
文摘Monolayer of polymer latex spheres was prepared at the air/water interface and deposited onto glass slides through Langmuir-Blodgett （LB） technique. Large-scale, high quality hexagonally close-packed domains were found in scanning electron microscopic pictures. Details of the monolayer-forming ability were discussed. Suitable surface characteristics of the colloidal particles, especially the hydrophilic and hydrophobic properties, are the keys for the formation of ordered monolayer films. The film can be transferred onto various kinds of substrates, even high curvature surface articles, such as fibers, decorations etc, can also be used as substrates. The advantages of this fabrication method of polymer latex spheres monolayer are fast, flexible, simple and very neat.
文摘Natural photonic structure with tunable structural colours is one of the most miraculous structures which always catches our eyes. However, the application of artificial photonic structures is limited. Moreover, because of the ability of tunable colours, photonic structure is the excellent candidate for many fields, such as sensor, bioassay, anti-counterfeiting, optical components, photocatalytic, fibers and fabrics. Considering the superior tunable optical property and other excellent performance such as robust mechanical strength, wettability, there are new domains and novel routes for this material that deserve us to explore. In this review, some natural photonic structures are discussed. Some novel fabrication methods and applications will be mentioned in this article. Furthermore, this review provides an insight and outlook for the photonic material with tunable eolours focusing on fabrication, design and applications.
文摘The present work reports microstructure-based wettability and reflectance responses of three varieties of Indian Rosaceae （Rosa） cultivars, viz. white rose （Rosa chinensis var spontanea）, light pink rose （Rosa ehinensis var minima） and dark pink rose （Rosa chinensis var minima）. As for wettability, static and advancing and receding Contact Angles （CA） have been measured, for each type of matured rose petals. The surface roughness factors （rφ）, which are largely dependent on the micro-papillae assembly within the rose petal, are estimated to be, 2.74, 2.27 and 2.94 in case of White （W）, Light Pink （LP） and Dark Pink （DP） petals; respectively. Moreover, the respective Contact Angle Hysteresis （CAH） values are measured as 51 °, 27° and 59°. In order to exploit structural colouration through the reflectance char- acteristics, the specimens were dipped in three different media of different Refractive Indices （R1）, viz. ethanol （RI = 1.36）, propanol （RI= 1.39） and glycerine （R/= 1.47） for about 24 h. Upon ethanol and propanol adsorption, the LP and DP rose petals showed unusually similar reflectance patterns over a wide range of wavelengths, thus indicating a common microstructural share and structural colour contribution. The wetting-dewetting and structural colouration in natural systems, to a great extent, are dictated by the surface structure and solid-liquid and liquid-air interfaces, not only offer fundamental interest but also give scope for mimicking in artificial designs of technological interest.
