1. Plasmonics is the study of electrons of Plasma matter present in the stars like sun.
2. Plasmonics techniques will soon be used in the Bio-sensors technology.
2. Plasmonics techniques will soon be used in the Bio-sensors technology.
Which of the above statement(s) is/are correct?
a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
a) 1 only
b) 2 only
c) Both 1 and 2
d) Neither 1 nor 2
Ans-[B]
Explanation – Plasmonics is the study of the interaction between electromagnetic field and free electrons present in a metal and it is not study of plasma matter present in the sun. Hence,statement 1 is wrong.
As we know, Free electrons in the metal can be excited by the electric component of light to have collective oscillations. Plasmonics make use of this property only and is the developing field of nano-photonics that holds the promise of molecular-size optical device technology. Its various applications are use in the bio-sensors, surface enhanced Raman spectroscopy, Laser antennas and fibres, Trapping and manipulation of Nanoparticles, controlled drug delivery, cancer therapy and contrast imaging.
No comments:
Post a Comment