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Related Concept Videos

Polymers02:34

Polymers

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The word polymer is derived from the Greek words “poly” which means “many” and “mer” which means “parts”. Polymers are long chains of molecules composed of repeating units of smaller molecules, known as monomers. They either occur naturally, such as DNA and proteins, or can be constructed synthetically, like plastics. They have varied structural characteristics, such as linear chains, branched chains, or complex networks, that contribute to the...
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Polymers02:34

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Beams01:30

Beams

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Beams are integral components of structural engineering and construction, designed to support loads applied at various points along their length. These long, straight members can be classified based on geometry, cross-section, support type, and equilibrium condition.
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Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
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Accurately determining beam deflection and slope under various loading conditions in structural engineering is crucial for ensuring safety and structural integrity. Singularity functions offer a streamlined approach to analyzing beams, especially when multiple loading functions complicate the bending moment equation.
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Prismatic Beams: Problem Solving01:15

Prismatic Beams: Problem Solving

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In the design of a supported timber beam subjected to a distributed load, both the beam's physical dimensions and the timber's characteristics, such as its grade and species, are critical. These factors determine the allowable stress values, which are crucial for calculating the necessary beam depth to ensure structural integrity and safety.
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Bessel-like beams generated via fiber-based polymer microtips.

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    This summary is machine-generated.

    Researchers developed self-growing polymer microtips for efficient Bessel-like beam generation. This low-cost, compact method optimizes microtip shape and photopolymerization for versatile beam production.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Bessel beams offer unique properties like self-reconstruction and non-diffraction.
    • Generating Bessel beams efficiently and compactly remains a challenge in optical systems.

    Purpose of the Study:

    • To present a novel and efficient method for generating Bessel-like beams.
    • To investigate the optimization of polymer microtip fabrication for beam generation.
    • To explore the properties and bandwidth of the generated Bessel-like beams.

    Main Methods:

    • Fabrication of self-growing polymer microtips at the facet of single-mode fibers.
    • Precise optimization of microtip length, convex droplet height, and photopolymerization parameters.
    • Characterization of microtip conversion bandwidth and self-healing properties of the Bessel-like beam.

    Main Results:

    • Successful generation of Bessel-like beams using fabricated polymer microtips.
    • Demonstrated optimization of microtip parameters for effective beam generation.
    • Investigated wide conversion bandwidth and self-healing characteristics of the produced beams.

    Conclusions:

    • The developed polymer microtips offer an effective, low-cost, and ultra-compact solution for Bessel-like beam generation.
    • This approach provides a promising pathway for miniaturized optical systems requiring Bessel beams.