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Related Concept Videos

Crossover Experiments01:16

Crossover Experiments

Crossover experiments, also called the repeated-measurements design, is a study design in which all experimental units are exposed to all treatments in different periods. Crossover experiments are generally used in psychology, the pharmaceutical industry, agriculture, and medicine.
Crossover designs are performed even with smaller sample sizes since the samples can act as their controls. These are better than simple randomized trials since patients are exposed to all the treatments.
Design Example01:23

Design Example

The innovation of touch-tone telephony revolutionized the telecommunications industry by replacing the traditional rotary dial with a dual-tone multi-frequency (DTMF) signaling system. This system uses a matrix-style keypad with buttons arranged in four rows and three columns, creating 12 distinct signals each assigned to a pair of frequencies. Each button press results in a simultaneous generation of two sinusoidal tones – one from a low-frequency group (697 to 941 Hz) and one from a...
Transmission Line Design Considerations01:23

Transmission Line Design Considerations

Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
Crossing Over01:30

Crossing Over

Crossing over is the exchange of genetic information between homologous chromosomes during prophase I of meiosis I. Genetic recombination gives rise to allelic diversity in the newly formed daughter cells. In humans, crossing over produces genetically distinct haploid egg and sperm cells that undergo fertilization to produce unique offspring. Before cell division starts, the germ cell’s chromosome(s) undergo duplication in the S phase of the cell cycle. As the cells enter prophase I, duplicated...
Crossing Over01:34

Crossing Over

Unlike mitosis, meiosis aims for genetic diversity in its creation of haploid gametes. Dividing germ cells first begin this process in prophase I, where each chromosome—replicated in S phase—is now composed of two sister chromatids (identical copies) joined centrally.
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process called synapsis.
In order to...
Crossing over01:34

Crossing over

Unlike mitosis, meiosis aims for genetic diversity in its creation of haploid gametes. Dividing germ cells first begin this process in prophase I, where each chromosome—replicated in S phase—is now composed of two sister chromatids (identical copies) joined centrally.
The homologous pairs of sister chromosomes—one from the maternal and one from the paternal genome—then begin to align alongside each other lengthwise, matching corresponding DNA positions in a process called synapsis.
In order to...

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Updated: Jun 19, 2026

High Throughput Microfluidic Rapid and Low Cost Prototyping Packaging Methods
07:51

High Throughput Microfluidic Rapid and Low Cost Prototyping Packaging Methods

Published on: December 23, 2013

Planar optical configurations for crossover interconnects.

S H Song, E H Lee

    Optics Letters
    |October 28, 2009
    PubMed
    Summary
    This summary is machine-generated.

    This study introduces two planar optics designs for optical crossover interconnects, analyzing their capacity using Gaussian beams and microlens arrays. Using two substrates minimizes optical path differences for efficient data routing.

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    Area of Science:

    • Optics
    • Photonics
    • Optical Interconnects

    Background:

    • Optical interconnects are crucial for high-speed data communication.
    • Planar optics offer miniaturization and integration advantages.
    • Crossover configurations are essential for complex network topologies.

    Purpose of the Study:

    • To describe two novel planar optics configurations for optical crossover interconnects.
    • To derive the interconnection capacity for each configuration.
    • To propose a method for reducing optical path differences in these systems.

    Main Methods:

    • Analysis of Gaussian beam relay through microlens arrays.
    • Derivation of interconnection capacity based on optical principles.
    • Implementation of a dual-substrate approach to manage optical path lengths.

    Main Results:

    • Two distinct planar optics configurations for crossover interconnects were successfully described.
    • The interconnection capacity of each configuration was mathematically derived.
    • The proposed dual-substrate method effectively reduces optical path differences between connection routes.

    Conclusions:

    • The presented planar optics configurations offer viable solutions for optical crossover interconnects.
    • The derived capacity metrics provide valuable design guidelines.
    • The dual-substrate approach is a key innovation for improving performance in optical routing.