blue shift

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blue shift

n.
A decrease in the wavelength of radiation emitted by an approaching celestial body as a consequence of the Doppler effect.

[From the fact that the shorter wavelengths of light are at the blue end of the visible spectrum.]

blue shift

A decrease in the wavelength of radiation emitted by an approaching celestial body as a result of the Doppler effect. Objects appear bluish because the shorter wavelengths of light are at the blue end of the visible spectrum. Compare red shift.
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References in periodicals archive ?
Heating at higher temperature caused a 6 nm blue-shift at 100[degrees]C, followed by a small 3 nm red-shift at 120[degrees]C.
Indeed, the stereochemical influence seems to be more important, considering the blue-shift of approximately 3 nm observed when glycerol is exchanged by water.
When the size of titanatesamples decrease, the UV-Vis spectra are blue-shift. This work provided an effective hydrothermal method to synthesize titanate nanofibers, which may be applicable to fabrication of othernanomaterials.
Shan et al., "Blue-shift of UV emission in ZnO/graphene composites," Journal of Alloys and Compounds, vol.
Two short communications review fractional conductance in metallic nanowires, and red- and blue-shift of UV luminescence of ZnO nanowires.
The polaron absorption peak centered at 806-852 nm of a c-PAn/Si[O.sub.2] hybrid exhibits a blue-shift phenomenon as compared with that of c-PAn.
The greater the pressure, the greater the blue-shift in the colours, which is easily perceived by eye, so that it can be used as a stand-alone, interactive authentication feature.
The case is that the dispersive wave appears to be located at higher frequencies compared with our pump pulse; therefore, it is the so-called the blue-shift DW.
No preambulo da concepcao do modelo da ligacao de hidrogenio Y...H--X com Y sendo uma regiao de alta densidade eletronica e X apresentando maior eletronegatividade em relacao ao hidrogenio [17], alguns estudos quanticos computacionais foram desenvolvidos com o proposito de elucidar propriedades espectroscopicas intermoleculares [18], em particular a caracterizacao dos novos modos vibracionais como tambem os deslocamentos nas frequencias de estiramento das especies doadoras de proton [19, 20], cujo efeito pode ser interpretado como red-shift ou blue-shift em que a frequencia do oscilador e deslocada para valores decrescentes ou ascendentes [21, 22], respectivamente.
The blue-shift of the absorption onset indicates that this sample and other CdS clusters are quantum-confined due to decreasing particle size[42].The photoluminescence (PL) spectrum (Fig.5) of CdS nanoparticles was obtained by dispersing 1 mL sample in 10 mL of ethanol.
The high transmittance (62% at 660 nm and 18% at 440 nm) of JJ-7 is attributed to its low absorption extinction coefficient of MLCT band in the visible region and blue-shift by an increased HOMO-LUMO energy band gap.
This mechanism predicts both kids of spectral-shifts, red-shift as well as blue-shift. The solar-system-astrometric-anomalies [1, 2] are indicated here to arise due to the blue-shift caused by the cumulative-phase-alteration-mechanism proposed here.