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Related Concept Videos

Second-Order Circuits01:17

Second-Order Circuits

3.5K
Integrating two fundamental energy storage elements in electrical circuits results in second-order circuits, encompassing RLC circuits and circuits with dual capacitors or inductors (RC and RL circuits). Second-order circuits are identified by second-order differential equations that link input and output signals.
Input signals typically originate from voltage or current sources, with the output often representing voltage across the capacitor and/or current through the inductor. For example, in...
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First-Order Circuits01:15

First-Order Circuits

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First-order electrical circuits, which comprise resistors and a single energy storage element - either a capacitor or an inductor, are fundamental to many electronic systems. These circuits are governed by a first-order differential equation that describes the relationship between input and output signals.
One common example of a first-order circuit is the RC (resistor-capacitor) circuit. These circuits are used in relaxation oscillators such as neon lamp oscillator circuits. When voltage is...
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The Y-to-Y Circuit01:19

The Y-to-Y Circuit

753
In a balanced four-wire wye-to-wye system, the arrangement involves wye-connected sinusoidal voltage sources and loads, connected through a neutral wire that links the neutral nodes of the source and load. The load impedance is connected across each phase of the load. The wye-connected source can be connected to the wye-connected load in four-wire and three-wire arrangements. A three-phase system is considered balanced when the load on each phase is equal, leading to uniform current flow and...
753
LC Circuits01:21

LC Circuits

3.3K
An LC circuit consists of an inductor and a capacitor, either in series or parallel. Consider a charged capacitor connected with an inductor in series. Before the switch is closed, all the energy of the circuit is stored in the electric field of the capacitor. When the switch is closed, the capacitor begins to discharge, producing a current in the circuit. The current, in turn, creates a magnetic field in the inductor. Because of the induced emf in the inductor, the current cannot change...
3.3K
Three-Phase Circuits01:22

Three-Phase Circuits

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AC power distribution systems have three categories: single-phase, two-phase, and three-phase systems. The single-phase circuit, common in residential settings, typically employs a two-wire system connecting a single AC source to various loads. These circuits support standard household appliances operating at 120 volts (V) and 240 V, such as lamps, televisions, and microwaves. The first generators, Niagara Falls hydro plant installed in 1895, were two-phase and designed by Nikola Tesla. The...
830
Neural Circuits01:25

Neural Circuits

2.8K
Neural circuits and neuronal pools are two of the main structures found in the nervous system. Neural circuits are networks of neurons that work together to carry out a specific task or process. They consist of interconnected neurons and glial cells, which provide structural and metabolic support.
Neuronal pools are collections of nerve cells with similar functions and interact through chemical and electrical signals. These pools include both interneurons (the central neural circuit nodes that...
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Related Experiment Video

Updated: Jan 31, 2026

Gene Digital Circuits Based on CRISPR-Cas Systems and Anti-CRISPR Proteins
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Gene Digital Circuits Based on CRISPR-Cas Systems and Anti-CRISPR Proteins

Published on: October 18, 2022

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Gene circuit-based sensors.

Xinyue Guo1, Min Li1, Xiaolei Zuo1

  • 1Institute of Molecular Medicine Shanghai Key Laboratory for Nucleic Acid Chemistry and Nanomedicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai 200127, China.

Fundamental Research
|January 30, 2026
PubMed
Summary
This summary is machine-generated.

Synthetic biology enables the creation of advanced gene circuit biosensors for detecting specific substances. This review details cell-free biosensor design, construction, and applications in bioassays.

Keywords:
Cell-free biosensorsCell-free systemDetectionGene circuitSynthetic biology

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Area of Science:

  • Synthetic biology
  • Biosensors
  • Gene circuits

Background:

  • Gene circuit-based biosensors are a key area within biosensor technology.
  • They leverage synthetic biology principles for substance detection and signal conversion.
  • Potential applications span biomanufacturing, environmental monitoring, food safety, and medical diagnostics.

Purpose of the Study:

  • To provide a comprehensive overview of synthetic biology gene circuit design and engineering.
  • To review cell-free systems (CFS) and the development of CFS-based biosensors.
  • To emphasize the design, construction, and bioassay applications of cell-free biosensors.

Main Methods:

  • Integration of basic synthetic biology concepts.
  • Comprehensive description of synthetic biology gene circuit design and engineering.
  • Overview of cell-free systems and biosensor development within these systems.

Main Results:

  • Detailed discussion on design concepts, construction principles, and applications of cell-free biosensors in bioassays.
  • Exploration of various response mechanisms, logic gates, and logic loops in cell-free microbial sensors.
  • Identification of emerging frontiers and challenges in the field.

Conclusions:

  • Cell-free biosensors offer significant potential across diverse monitoring and diagnostic fields.
  • Advancements in synthetic biology and genetic components drive the development of sophisticated cell-free sensors.
  • Further research is needed to address current challenges and explore new frontiers in cell-free biosensor technology.