Related Experiment Video

Updated: Jan 30, 2026

Wideband Optical Detector of Ultrasound for Medical Imaging Applications
08:21

Wideband Optical Detector of Ultrasound for Medical Imaging Applications

Published on: May 11, 2014

11.7K

Optically transparent metasurface Salisbury screen with wideband microwave absorption

Tianshu Li, Ke Chen, Guowen Ding

    Optics Express
    |January 18, 2019
    PubMed
    Summary

    We developed a transparent metasurface Salisbury screen (MSS) for broadband microwave absorption. This thin, lightweight absorber achieves over 89% absorption from 4.1 to 17.5 GHz, maintaining optical transparency.

    More Related Videos

    Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces09:33

    Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

    Published on: June 7, 2019

    6.7K
    Patterning Cells on Optically Transparent Indium Tin Oxide Electrodes26:16

    Patterning Cells on Optically Transparent Indium Tin Oxide Electrodes

    Published on: August 20, 2007

    12.3K

    Related Concept Videos

    Drug Absorption: Factors Affecting GI Absorption01:19

    Drug Absorption: Factors Affecting GI Absorption

    The process of oral drug absorption can be influenced by several factors. Weakly acidic drugs tend to be absorbed more readily from the stomach due to their nonionized state. However, absorption may be less efficient in the upper intestine, where drugs are often ionized. Interestingly, despite the stomach's apparent advantage for drug absorption, its mucous layer can hinder diffusion. Its surface area is also smaller than the intestine's, which can further slow down the absorption rate.
    6.2K
    Absorption of Radiation01:05

    Absorption of Radiation

    The rate of heat transfer by emitted radiation is described by the Stefan-Boltzmann law of radiation:
    1.3K
    Protein Absorption01:12

    Protein Absorption

    Proteins in the gastrointestinal tract typically come from food, but they can also originate from disintegrated cells or secreted enzymes. In the stomach, the enzyme pepsin breaks down these proteins into polypeptides. The fragments then move into the duodenum as a semi-fluid mass called chyme. Pancreatic proteases, such as trypsin and chymotrypsin, and intestinal brush border enzymes like carboxypeptidases further dismantle the polypeptides into tripeptides, dipeptides, and free amino acids.
    1.0K
    Lipid Absorption01:24

    Lipid Absorption

    Dietary triglycerides from chyme in the duodenum are mixed with bile salts produced by the liver to emulsify fats. As a result, large droplets are broken down into smaller ones, increasing the surface area for enzymatic action. Once emulsified, pancreatic lipases hydrolyze the triglycerides into free fatty acids and monoglycerides.
    These breakdown products bind with bile salts and lecithin to form micelles, which quickly pass between microvilli to come in close contact with the apical...
    2.6K
    Carbohydrate Absorption01:25

    Carbohydrate Absorption

    Carbohydrates are essential macronutrients that serve as the body's primary energy source. Their digestion begins in the mouth, where salivary amylase partially breaks down complex carbohydrates such as starch into smaller oligosaccharides. This mechanical and enzymatic activity prepares carbohydrates for further processing in the gastrointestinal tract.
    After being swallowed, the partially digested carbohydrates mix with gastric secretions in the stomach. However, the acidic environment...
    3.3K
    Absorption of Nutrients01:19

    Absorption of Nutrients

    Absorption refers to taking dietary nutrients from the intestinal lumen for transportation throughout the body. After digestion in the small intestine, carbohydrates, proteins, and fats are broken down into simpler forms. These essential macronutrients and other vital substances, such as vitamins, minerals, and water, are then prepared for absorption into the bloodstream.
    Enterocytes, which are specialized polar epithelial cells, line the mucosa of the small intestinal walls. These cells...
    4.0K