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Item type:Publication, Access status: without files , A composite right/left-handed transmission line sensor for permittivity measurements(2019-05); ; The paper presents a sensor for measuring the dielectric constant of solids and liquids, based on Composite Right/Left-Handed Transmission Line (CRLH-TL) structure. For the proposed sensor, the operating principle and the fabrication technology are described in detail. The sensor utilizes a novel CRLH unit cell approach which separate coaxial line Right-Handed (RH) and substrate based Left-Handed (LH) components. For sensing applications, CRLH structures can exhibit high sensitivity and at the same time have the advantage of scalability in frequency and size and have the ability of conformal adaptation to the sensing task [1]. For proof of concept, a coaxial transmittance type sensor is realized and tested in a dedicated measurement setup with different grains and seeds.Publicationtype: Conference Paper49 - Some of the metrics are blocked by yourconsent settings
Item type:Publication, Access status: without files , Interdigital multilayer-graphene nanoelectrodes for continuous wave terahertz photomixersA new type photomixer for continuous wave (CW) terahertz (THz) generation was fabricated using 6-8 layer graphene. The multilayer graphene (MLG) sheets were used as six-finger interdigital nanoelectrodes on a low-temperature-grown (LTG) GaAs photoconductor. The MLG nanoelectrode shows unique properties with high short-circuit current capabilities and reliable high photocurrents. Furthermore, due to the transparency of the graphene, the use of graphene as nanoelectrodes in THz photomixers allows an efficient optical power illumination for high photocurrent generation and shows a promising CW THz emission.Publicationtype: Conference Paper71