Plasmonic antenna thesis

His thesis research at Cornell included the first demonstrations of single molecule vibrational spectroscopy and manipulation using a scanning tunneling microscope, for which he won the Morton M. Fabrication at the nanometer scale is always subject to defects, such as surface roughness, corner smoothing, implementation of impurities which have a direct impact on plasmon resonance frequencies.

Dynamically tunable localized surface plasmons using VO2 phase transition Rahimi, Eesa Dynamically tunable localized surface plasmons using VO2 phase transition.

We exploit huge field enhancement and subwavelength confinement in plasmonic structures.

Steve Blair

We have recently found that combining TAR and bit patterned media BP-TAR can solve both problems and allows for dramatic reductions in track pitch down to 24 nm and optical power requirements factor of five as compared to TAR recording on granular media.

Gap sizes of 5 nm could be reached in a very reproducible manner. Next, plasmons supported by Au nanoshells are used to control the fluorescence of near-infrared fluorophores placed at controlled distances from the nanoshell surface.

The second detector is based on an array of interdigitated bow-tie antennas connected in parallel and shunted by graphene squares. Lastly the removal of metal for the apertures posed additional problems.

For reproduction of material from all other RSC journals and books: The first design is based on an array of planar antennas arranged in series and shorted by graphene squares.

Dynamically tunable localized surface plasmons using VO2 phase transition

XX is the XXth reference in the list of references. Reproduced material should be attributed as follows: Simulations showed that the Raman enhancement factor was sensitive to the illumination beam radius as well as the focusing of the beam in the center of the antenna.

A Raman enhancement of up to 4. Le spectre de diffusion des antennes concorde avec nos simulations. By changing the delay time between the THz and optical pulses, we demonstrated pulse shaping of the PIT waveforms. We fabricated sub nm plasmonic antennas designed to engineer surface and volume plasmons in the vacuum ultraviolet VUV region of the electromagnetic spectrum 3 to 50 eV.

Makhlouf 1 et A. These studies are performed using structures based on metallic nanoshells, which consist of a thin Au shell coating a silica nanosphere. Christian Hafner, co-examiner Dr.

Optical antennas are formed by a pair of nanoparticles brought in close proximity. Other commercial THz detectors, like bolometers, are more sensitive but require liquid helium cooling.

In this thesis, two types of room-temperature high-responsivity graphene-based THz detectors are presented, relying on the unique properties of graphene and the function of plasmonic antenna arrays which boost the interaction between THz waves and graphene.

Other commercial THz detectors, like bolometers, are more sensitive but require liquid helium cooling. A Raman enhancement factor of about has been estimated by simulations for the presence of molecules only on the antenna.

This creates a discrepancy between the design of optical antennas using simulations and the ones achieved in laboratory fabrication. The plasmonic device creates an intense optical pattern in the near-field, heating the disk at the nanometer scale.

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We believe that the combination of simulations to achieve a good design of antennas with the capability to reach small gap sizes and the possibility to tune the resonance frequency of the antennas by mechanical stretching of the substrate can lead to very promising devices for sensitive biosensing applications.

Plasmonic structures can efficiently couple energy from freely propagating electromagnetic waves to localized electromagnetic fields and vice-versa, essentially acting as an optical antenna.

However, the challenge is its insufficient light absorption that largely limits the responsivity.dots acting as single plasmonic particles and a coupling regime, realizing a plasmonic cavity. we observe a Raman intensity enhancement of the order of 10 3 resulting from the near- eld enhancement at the antenna cavity.

My overall research focuses on the application of optics/photonics to problems in biology and medicine. My current research includes plasmonic antennas for enhancing light matter interactions, real-time DNA and protein microarrays, and neural photonics - using light to effect and/or record neural signals.

The time domain response of the plasmonic antenna is obtained using inverse Fourier transformation. It is shown that the rich spectral characteristics of the plasmonic snowflake nanoantenna allow manipulation of the femtosecond pulses over a wide moreĀ» spectrum.

Enhancing light-matter interaction using antenna e ects Master's thesis by Jenny Karlsson LRAP Lund, Ma,y Abstract This master's thesis explores the possibility to use a plasmonic antenna to scale a quantum com-puter based on rare-earth-ion-doped crystals to a large number of qubits.

In this thesis, two types of room-temperature high-responsivity graphene-based THz detectors are presented, relying on the unique properties of graphene and the function of plasmonic antenna arrays which boost the interaction between THz waves and graphene.

Optical Antennas for Biosensing Applications The aim of the thesis is to theoretically investigate optical/plasmonic antennas for biosensing and plasmonic antenna with a volume current (right) leading to shorter wavelength which can be seen in the dispersion relation (center).

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Plasmonic antenna thesis
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