Nanoantenna enhanced terahertz interaction of biomolecules
نویسندگان
چکیده
منابع مشابه
Terahertz Dipole Nanoantenna Arrays: Resonance Characteristics
Resonant dipole nanoantennas promise to considerably improve the capabilities of terahertz spectroscopy, offering the possibility of increasing its sensitivity through local field enhancement, while in principle allowing unprecedented spatial resolutions, well below the diffraction limit. Here, we investigate the resonance properties of ordered arrays of terahertz dipole nanoantennas, both expe...
متن کاملEnhancement of terahertz pulse emission by optical nanoantenna.
Bridging the gap between ultrashort pulsed optical waves and terahertz (THz) waves, the THz photoconductive antenna (PCA) is a major constituent for the emission or detection of THz waves by diverse optical and electrical methods. However, THz PCA still lacks employment of advanced breakthrough technologies for high-power THz emission. Here, we report the enhancement of THz emission power by in...
متن کاملMicrofluidic devices for terahertz spectroscopy of biomolecules.
We demonstrate microfluidic devices for terahertz spectroscopy of biomolecules in aqueous solutions. The devices are fabricated out of a plastic material that is both mechanically rigid and optically transparent with near-zero dispersion in the terahertz frequency range. Using a lowpower terahertz time-domain spectrometer, we experimentally measure the absorption spectra of the vibrational mode...
متن کاملTerahertz Circular Dichroism Spectroscopy of Biomolecules
Biopolymers such as proteins, DNA and RNA fold into large, macromolecular chiral structures. As charged macromolecules, they absorb strongly in the terahertz due to large-scale collective vibrational modes; as chiral objects, this absorption should be coupled with significant circular dichroism. Terahertz circular dichroism (TCD) is potentially important as a biospecific sensor, unobscured by s...
متن کاملNanoantenna-enhanced ultrafast nonlinear spectroscopy of a single gold nanoparticle
Supplementary Figure S1: Antenna enhancement for another antenna-particle pair: Same graph as in Fig.4 of the main text, but for another antenna-nanoparticle pair. The black curve shows the differential pump-probe spectrum of a single nanoparticle with 50 nm in diameter. As predicted this signal is stronger and also red shifted by about ∆λ = 20 nm compared to the single 40 nm nanoparticle shown...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Analyst
سال: 2019
ISSN: 0003-2654,1364-5528
DOI: 10.1039/c9an00798a