![]() ![]() The optical microscopy images were obtained using a digital microscope (VHX-600E, Keyence, Japan).įTIR data were collected on an IRPrestige-21 (Shimadzu) with a resolution of 4 cm 1 with 40 scans for each spectrum. SEM images were obtained using a JEOL JSM-6380F SEM at 3.0 kV. The rate at which the pressure head was of advanced or retracted was 1.7 mm s 1. ![]() ![]() The force sensor was connected with a pressure head that has a measurement range of 0 500 g and an error less than 1 g. The force measurement procedure of the superhydrophobic copper foam in the process of sinking and oating was studied using a UMT-2 friction tester (CETR, USA). Subse- quently, the immersed copper foam and the sheet were rinsed thoroughly with deionized water and ethanol and dried in air. These four types of copper foam and a copper sheet were immersed in an ethanol solution of n -tetradecanoic acid (0.015 M, Sinopharm Chemical Reagent Co., Ltd) at room temperature for 3 5 days. The pore densities of the four types of copper foam were in the range of 10 80 PPI, the pore sizes were in the range of 0.5 4.2 mm, and the porosities were in the range of 95 86. The copper foam used in this study was prepared in our labo- ratory by rst subjecting polyurethane foam to conductive treatment (conductive graphite colloid coating), then carrying out a copper electroplating process and heat treatment. To address these shortcomings, we consider here an open-cell metal foam that has a porous structure with an interconnected three-dimensional (3D) metallic network and possesses many special properties such as low density, speci c types of mechanical performance, high speci c surface area, and high conductivity. However, these low-dimensional materials have weaker sink- resistance than the water strider, and they are unable to oat again a er they have penetrated the water surface. We report a novel kind of super-floatable material fabricated from superhydrophobic metal foam as a three-dimensional extension of biologically inspired 1-D and 2-D materials.Ī simple and widely adaptable method is used to construct a superhydrophobic.Ĭite Download full-text Context in source publication Context 1. Optical micrographs of four types of superhydrophobic copper foams with 10, 20, 40, and 80 pores per inch. More like a water strider, superhydrophobic copper foam can not only fl oat freely on the surface of water, but also exhibit a surplus loading capacity. The inset image shows the shape of a water droplet (4 m L) on the surface of a treated copper sheet for the contact angle measurement. ![]() The SEM image shows that the blue coating is composed of microclusters of micro- and nanosheets. Optical image of the as- prepared copper foam integrated with a superhydrophobic surface by one-step solution immersion.
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |