摘要:
A THz frequency range antenna is provided which comprises: a semiconductor film (3) having a surface adapted to exhibit surface plasmons in the THz frequency range. The surface of the semiconductor film (3) is structured with an antenna structure (4) arranged to support localized surface plasmon resonances in the THz frequency range.
摘要:
A device for analyzing a sample using radiation in the terahertz frequency range is provided. The device comprises a transmitter (3) comprising a THz signal generator (5, 6, 7; 51) for generating an electromagnetic THz signal, the THz signal generator comprising a nonlinear transmission line (7; 52). The device further comprises a surface plasmon polariton generating unit (8) adapted to convert the THz signal into a surface plasmon polariton. The transmitter (3) and the surface plamon polariton generating unit (8) are either integrated on one common substrate or on two separate substrates.
摘要:
The present disclosure relates to a gas sensor including a first layer and a second layer superimposed on each other along an interface between the two layers. The first layer includes an array of nanoparticles along the interface, the nanoparticles provided so as to allow, upon illumination with electromagnetic radiation, long range diffractive coupling of surface plasmon resonances resulting in a surface lattice resonance condition. The second layer includes a material that, when exposed to at least one predetermined gas, detectably affects the surface lattice resonance condition. The material of the second layer preferably has a porosity of at least 10%.
摘要:
A metal nanoantenna for use in a biosensing device is disclosed. The metal nanoantenna is arranged to exhibit at least two particle plasmon resonances or surface plasmon resonances (SPRs). The nanoantenna is for use in a sensor and allows detection at low concentration of biological components. In one aspect, the nanoantenna can have an asymmetric structural configuration and spectrally separated resonances. In one aspect, there is a location in its structure providing local electromagnetic field enhancement at all of the SPRs. The metal nanoantenna can be used for background free measuring of a quantity of a biological component.
摘要:
A device for analyzing a sample using radiation in the terahertz frequency range is provided. The device comprises a transmitter (3) comprising a THz signal generator (5, 6, 7; 51) for generating an electromagnetic THz signal, the THz signal generator comprising a nonlinear transmission line (7; 52). The device further comprises a surface plasmon polariton generating unit (8) adapted to convert the THz signal into a surface plasmon polariton. The transmitter (3) and the surface plamon polariton generating unit (8) are either integrated on one common substrate or on two separate substrates.
摘要:
A THz frequency range antenna is provided which comprises: a semiconductor film (3) having a surface adapted to exhibit surface plasmons in the THz frequency range. The surface of the semiconductor film (3) is structured with an antenna structure (4) arranged to support localized surface plasmon resonances in the THz frequency range.
摘要:
Proposed is an illumination device (100), comprising a light source (110) such as an LED or a laser diode, a wavelength conversion medium (120) such as a phosphor, and a periodic antenna array (300) made of a highly polarisable material such as a metal. The light source emits primary wavelength light that at least partially is converted in secondary wavelength light by the wavelength conversion medium. The periodic antenna array is positioned in close proximity to the wavelength conversion medium and functions to enhance the efficiency of the absorption and/or emission processes in the wavelength conversion medium through the coupling of the incident primary wavelength light or the emitted secondary light to surface lattice resonances that arise from the diffractive coupling of localized surface plasmon polaritons in the individual antennas of the array. This is especially advantageous for forming low étendue illumination device suitable for use in projection systems, or for controlling the directionality, the polarization, and/or the color of the secondary wavelength light.
摘要:
A metal nanoantenna for use in a biosensing device is disclosed. The metal nanoantenna is arranged to exhibit at least two particle plasmon resonances or surface plasmon resonances (SPRs). The nanoantenna is for use in a sensor and allows detection at low concentration of biological components. In one aspect, the nanoantenna can have an asymmetric structural configuration and spectrally separated resonances. In one aspect, there is a location in its structure providing local electromagnetic field enhancement at all of the SPRs. The metal nanoantenna can be used for background free measuring of a quantity of a biological component.
摘要:
The invention relates to an assembly for detecting the presence of a target based on a detection of a resonance associated to surface polaritons, such as long-range surface exciton polaritons (LRSEP). The invention relates to an assembly to be used in connection with a bio-sensor. The assembly comprising a carrier substrate (1) and a sensor layer (2) positioned on the carrier substrate. The sensor layer is of a material having a complex permittivity with an imaginary part being greater than or similar to the real part.
摘要:
A metal nanoantenna for use in a biosensing device is disclosed. The metal nanoantenna is arranged to exhibit at least two particle plasmon resonances or surface plasmon resonances (SPRs). The nanoantenna is for use in a sensor and allows detection at low concentration of biological components. In one aspect, the nanoantenna can have an asymmetric structural configuration and spectrally separated resonances. In one aspect, there is a location in its structure providing local electromagnetic field enhancement at all of the SPRs. The metal nanoantenna can be used for background free measuring of a quantity of a biological component.