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Related Concept Videos

Components of Language01:24

Components of Language

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Language, whether spoken, signed, or written, consists of specific components: lexicon and grammar. The lexicon is the vocabulary of a language, comprising its words. Grammar is the set of rules used to convey meaning through the lexicon. For example, English grammar adds “-ed” to most verbs to indicate past tense. Words are formed by combining phonemes, which are the basic sound units of a language. Different languages have different sets of phonemes (e.g., “ah” vs.
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Components of Stress01:23

Components of Stress

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Stress analysis under multiple loading conditions is intricate, necessitating a comprehensive grasp of normal and shearing stresses. Consider a small cube at point O, subjected to stress on all six faces, visible or not. Normal stress components σx, σy, σz act perpendicularly to the x, y, and z axes. Shearing stress components τxy and τxz are exerted on faces perpendicular to these axes.
Interestingly, the hidden cube faces also experience these stresses, equal and...
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Normal and Tangetial Components: Problem Solving01:24

Normal and Tangetial Components: Problem Solving

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Consider a man with a mass of 70 kg seated in a chair connected to a pin support through a member BC. If the man maintains an upright position, the task is to determine the horizontal and vertical reactions of the chair on the man when the member makes a 45° angle with the horizontal. At this moment, the man has a speed of 5 m/s, increasing at a rate of 1 m/s².
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Vector Components in the Cartesian Coordinate System01:29

Vector Components in the Cartesian Coordinate System

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Vectors are usually described in terms of their components in a coordinate system. Even in everyday life, we naturally invoke the concept of orthogonal projections in a rectangular coordinate system. For example, if someone gives you directions for a particular location, you will be told to go a few km in a direction like east, west, north, or south, along with the angle in which you are supposed to move. In a rectangular (Cartesian) xy-coordinate system in a plane, a point in a plane is...
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Vector Algebra: Method of Components

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It is cumbersome to find the magnitudes of vectors using the parallelogram rule or using the graphical method to perform mathematical operations like addition, subtraction, and multiplication. There are two ways to circumvent this algebraic complexity. One way is to draw the vectors to scale, as in navigation, and read approximate vector lengths and angles (directions) from the graphs. The other way is to use the method of components.
In many applications, the magnitudes and directions of...
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Curvilinear Motion: Rectangular Components01:23

Curvilinear Motion: Rectangular Components

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Curvilinear motion characterizes the movement of a particle or object along a curved path, notably evident when envisioning a car navigating a winding road. If the car starts at point A, its position vector is established within a fixed frame of reference, where the ratio of the position vector to its magnitude signifies the unit vector pointing in the position vector's direction.
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Preparation and Characterization of C60/Graphene Hybrid Nanostructures
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Nanostructured Graphene: An Active Component in Optoelectronic Devices.

Chang-Hyun Kim1

  • 1Department of Electronic Engineering, Gachon University, Seongnam 13120, Korea. chang-hyun.kim@gachon.ac.kr.

Nanomaterials (Basel, Switzerland)
|May 15, 2018
PubMed
Summary

Chemically modified graphene nanomaterials offer new possibilities for optoelectronic devices. This review covers design principles and recent advances in graphene-hybrid semiconductor devices for high-performance applications.

Keywords:
chemical functionalizationhybrid nanotechnologynanostructured grapheneoptoelectronicssemiconductor devices

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Optoelectronics

Background:

  • Graphene's unique electronic properties make it suitable for advanced optoelectronic applications.
  • Nanostructured and chemically modified graphene offer enhanced functionalities beyond transparent electrodes.

Purpose of the Study:

  • To provide an overview of graphene-based nanomaterials in semiconductor optoelectronic devices.
  • To discuss design principles, fabrication, and optimization of graphene-integrated devices.
  • To highlight recent advances and future directions in graphene optoelectronics.

Main Methods:

  • Review of fundamental concepts and theoretical backgrounds of graphene.
  • Analysis of finite-size effects, non-idealities, and functionalization mechanisms.
  • Conceptualization of hybridized films and their property modulation.

Main Results:

  • Graphene integration in active regions of semiconductor devices is explored.
  • Guidelines for designing new graphene-based materials and devices are provided.
  • Notable devices with graphene hybrid channels are highlighted, detailing preparation and fabrication.

Conclusions:

  • Graphene-based nanomaterials present significant opportunities for next-generation optoelectronics.
  • Current scientific challenges and future research approaches are summarized.
  • Optimization of graphene hybrid channels is key for high-performance devices.