Related Experiment Video

Updated: Feb 13, 2026

Characterization of Biological Absorption Spectra Spanning the Visible to the Short-Wave Infrared
07:38

Characterization of Biological Absorption Spectra Spanning the Visible to the Short-Wave Infrared

Published on: January 10, 2025

3.3K

Tunable terahertz/infrared coherent perfect absorption in a monolayer black phosphorus

Xi Wang, Qian Ma, Leiming Wu

    Optics Express
    |March 14, 2018
    PubMed

    More Related Videos

    Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor07:28

    Terahertz Microfluidic Sensing Using a Parallel-plate Waveguide Sensor

    Published on: August 30, 2012

    11.2K
    Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading10:49

    Laboratory-determined Phosphorus Flux from Lake Sediments as a Measure of Internal Phosphorus Loading

    Published on: March 6, 2014

    17.9K

    Related Concept Videos

    The Phosphorus Cycle01:21

    The Phosphorus Cycle

    Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.
    44.2K
    Catalytically Perfect Enzymes01:07

    Catalytically Perfect Enzymes

    The theory of catalytically perfect enzymes was first proposed by W.J. Albery and J. R. Knowles in 1976. These enzymes catalyze biochemical reactions at high-speed. Their catalytic efficiency values range from 108-109 M-1s-1. These enzymes are also called 'diffusion-controlled' as the only rate-limiting step in the catalysis is that of the substrate diffusion into the active site. Examples include triose phosphate isomerase, fumarase, and superoxide dismutase.
     
    Most enzymes...
    5.2K
    Detection of Black Holes01:10

    Detection of Black Holes

    Although black holes were theoretically postulated in the 1920s, they remained outside the domain of observational astronomy until the 1970s.
    Their closest cousins are neutron stars, which are composed almost entirely of neutrons packed against each other, making them extremely dense. A neutron star has the same mass as the Sun but its diameter is only a few kilometers. Therefore, the escape velocity from their surface is close to the speed of light.
    Not until the 1960s, when the first neutron...
    2.6K
    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.
    6.4K
    Chirality at Nitrogen, Phosphorus, and Sulfur02:30

    Chirality at Nitrogen, Phosphorus, and Sulfur

    Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
    A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...
    7.1K
    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