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Related Concept Videos

Lossless Lines01:23

Lossless Lines

566
In electrical engineering, a lossless transmission line is characterized by a purely imaginary propagation constant and a resistive characteristic impedance. The ABCD parameters, which describe the relationship between the input and output voltages and currents, indicate an equivalent π circuit with an imaginary series impedance and a shunt admittance. This results in a transmission line that, when the product of the phase constant (beta) and the length of the line is less than pi, exhibits...
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Cell Lines01:16

Cell Lines

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A cell line is a population of cells grown in vitro that can be subcultured over several generations. Normal cells cease to divide after a certain number of cell divisions, a process known as replicative senescence. This number, called the Hayflick limit, was conceptualized by Leonard Hayflick in 1961 when he observed that fetal cells grown in culture could only divide 40-60 times. This limit is due to the shortening of the telomeres during each round of cell division, preventing cell division...
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Lossy Lines and Overvoltages01:22

Lossy Lines and Overvoltages

357
Transmission-line series resistance and shunt conductance cause three primary effects: attenuation, distortion, and power losses.
Attenuation
When constant series resistance and shunt conductance are present, voltage and current equations are modified. The propagation constant indicates that voltage and current waves consist of both forward and backward traveling components. These waves attenuate as they propagate, with the attenuation factor related to the resistance and conductance. In a...
357
Electric Field Lines01:25

Electric Field Lines

9.4K
The three-dimensional representation of the electric field of a positive point charge requires tracing the electric field vectors, whose lengths decrease as the square of their distance from the charge and which point away from the charge at each point. This vector field is no doubt challenging to visualize. The visualization of electric fields becomes quickly intractable as the number of charges increases.
The solution to this problem is to use electric field lines, which are not vectors but...
9.4K
Magnetic Field Lines01:19

Magnetic Field Lines

5.5K
The representation of magnetic fields by magnetic field lines is very useful in visualizing the strength and direction of the magnetic field. Each of the magnetic field lines forms a closed loop. The field lines emerge from the north pole (N), loop around to the south pole (S), and continue through the bar magnet back to the north pole.
Magnetic field lines follow several hard-and-fast rules:
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DNA Topoisomerases02:02

DNA Topoisomerases

35.2K
Topoisomerases are enzymes that relax overwound DNA molecules during various cell processes, including DNA replication and transcription. These enzymes regulate positive and negative DNA supercoiling without changing the nucleotide sequence. DNA overwinding in a clockwise direction results in positively supercoiled DNA, whereas underwinding in a counterclockwise direction produces negatively supercoiled DNA.
Types and Mechanism of action
Topoisomerases are divided into two main types. ...
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Related Experiment Video

Updated: Jan 26, 2026

Fabrication of Thin Film Silver/Silver Chloride Electrodes with Finely Controlled Single Layer Silver Chloride
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Fabrication of Thin Film Silver/Silver Chloride Electrodes with Finely Controlled Single Layer Silver Chloride

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DNA Arrays with a Silver Lining.

Arun Richard Chandrasekaran1

  • 1Confer Health, Inc., 56 Roland Street, Charlestown, MA, 2129, USA.

Chembiochem : a European Journal of Chemical Biology
|August 4, 2017
PubMed
Summary
This summary is machine-generated.

Researchers are developing longer DNA nanowires for molecular electronics. Recent one-dimensional silver/DNA hybrid arrays represent a significant advancement in this field of bottom-up nanotechnology.

Keywords:
DNAmetallo-base pairsnanomaterialsnanowiressilver

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Related Experiment Videos

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Fabrication of Thin Film Silver/Silver Chloride Electrodes with Finely Controlled Single Layer Silver Chloride
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Area of Science:

  • Molecular electronics
  • Bottom-up nanotechnology
  • Nanomaterials

Background:

  • DNA is a versatile building block for nanostructures.
  • DNA's application extends to creating conducting nanowires.
  • Advancements in nanotechnology focus on molecular electronics.

Purpose of the Study:

  • To advance the development of longer DNA nanowires.
  • To explore novel materials for molecular electronics.
  • To contribute to bottom-up nanotechnology.

Main Methods:

  • Fabrication of one-dimensional silver/DNA hybrid arrays.
  • Characterization of DNA-based nanostructures.
  • Investigating conductivity in hybrid nanomaterials.

Main Results:

  • Successful creation of one-dimensional silver/DNA hybrid arrays.
  • Demonstrated potential for extending DNA nanowire length.
  • Progress in DNA-based conducting nanowire development.

Conclusions:

  • Silver/DNA hybrid arrays are a promising step towards longer DNA nanowires.
  • This research contributes to the field of molecular electronics.
  • The findings support the use of DNA in bottom-up nanotechnology for advanced applications.