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Category - Electrical

schematic diagram of a piston
  • Electrical

Power and Signal Transmission – theteche.com

March 18, 2022
by Santhakumar Raja
3 min read
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End effectors require power to operate. They also require control signals to regulate their operation. The principal methods of transmitting power and control signal to the end effector...

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An electrostatic micro motor
  • Electrical

Introduction to Electrostatic Sensors and Actuators

March 13, 2022
by Santhakumar Raja
4 min read
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A capacitor is broadly defined as two conductors that can hold opposite charges. It can be used as either a sensor or an actuator. If the distance and relative position between two conductors change as a result of applied...

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  • Electrical

Active Tuning of Spring Constant and Resonant Frequency

March 12, 2022
by Santhakumar Raja
2 min read
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Mechanical characteristics such as spring constants and resonant frequencies of beams and membranes can be changed by introducing strain. In this section, we focus on discussing methods for tuning characteristics of cantilever...

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A mass spring damper system
  • Electrical

Dynamic System, Resonant Frequency, and Quality Factor

March 10, 2022
by Santhakumar Raja
7 min read
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A MEMS system, including sensors and actuators, invariably consists of mass and supporting structures. The supporting mechanical elements (membranes, cantilever, or suspensions) provide elastic restoring spring...

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Conductivity of Semiconductor
  • Electrical

Conductivity of Semiconductor – theteche.com

March 10, 2022
by Santhakumar Raja
5 min read
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Silicon, an element commonly found on sandy beaches and in window glasses, is the substrate of choice for building integrated circuits. Silicon belongs to a class of materials called semiconductors. which offers remarkable...

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Generally encountered deposition profiles
  • Electrical

Points of Consideration for Etching Process

February 28, 2022
by Santhakumar Raja
3 min read
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To following is a list of important issues to consider when evaluating an etching process. Etch rate. The speed of material removal is important. A higher etch rate translates into shorter etching time and greater manufacturing...

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Fabrication process for an integrated circuit
  • Electrical

The Microelectronics Fabrication Process Flow

February 27, 2022
by Santhakumar Raja
4 min read
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A basic understanding of the fabrication technology for integrated circuit, which precedes that of MEMS in history, is necessary to understanding the micromachining process. A reader who is familiar with the basic...

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A schematic diagram of plasma etching
  • Electrical

Plasma Etching and Reactive Ion Etching

February 27, 2022
by Santhakumar Raja
2 min read
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Plasma etching is a very prominent method of removing materials from a wafer surface. Since the process does not involve wet chemicals, it is often referred to as dry etching. The etching is carried out in a specialized process...

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Vibration Galvanometer
  • Electrical

Vibration Galvanometers – theteche.com

February 17, 2022
by Santhakumar Raja
3 min read
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These galvanometers are of d’Arsonval type having a moving coil suspended between the pieces of a permanent magnet. When an alternating current is passed through the moving coil, an alternating deflecting torque is produced...

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Duddell's Oscillograph element
  • Electrical

Duddell’s Oscillograph Element – theteche.com

February 17, 2022
by Santhakumar Raja
4 min read
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It consists of a single loop of thin phosphorbronze strip which forms the moving system. It is called a vibrator loop. The vibrator loop is situated in the field of a permanent magnet but when high sensitivities are required...

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