The pattern of transmission openings determines the location of the spot and the sub-half wavelength size of the openings can adjust the intensity.
Chaff consists of a large number of very thin strips of metal (usually copper or aluminum) or metalized nylon, cut to half the wavelength size of the radio wave from the tracking radar.
A key element in this concept is that waves can be affected by incorporating structural resonant elements of sub-wavelength sizes, i.e. features that are actually smaller than the wavelength of the waves to be affected.
Antireflective structures with features of sub-wavelength size are appropriate as an alternative to interference coatings for obtaining antireflective properties on optical surfaces.
It has been reported that periodic corrugations can enhance light intensity transmitted through a sub-wavelength size aperture by the light-surface plasmon coupling.
The marking process (laser energy, laser wavelength, pattern size, pattern design, etc).
The gradient and scattering forces affecting the particle depend on the trapping laser wavelength and size of the particle.
Simulations demonstrate that radio frequency magnetic fields of nearly uniform (< 1% variation) magnitude can be produced within dielectric objects larger than a wavelength in size.
Second, the porosity of the particulate medium causes volume shadowing effects—again, the length scales are large compared to the wavelength and size of the particles.
The effect exists for a broad range of laser wavelengths, spot sizes, spot intensities, optical intensity profiles and beam modulations, but it is unknown which biophysical mechanisms govern it.
Laser tissue interaction is influenced by wavelength, spot size, power and exposure time.
