Highly Sensitive Terahertz Dielectric Sensor for Liquid Crystal

Xianping, Li; Zheng, Guoqiang; Zhang, Guozhen; Yang, Jun; Hu, Minggang; Li, Jian; Liu, Ying; Lu, Hongbo; Yin, Zhiping

doi:10.3390/sym14091820

Cited by 12 publications

(3 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In comparison, we find that its sensitivity is close to 112.47 GHz/RIU in THz dielectric sensor for liquid crystal [51] and larger than 76.5 GHz/RIU in THz metamaterial biosensor for the detection of carcinoembryonic antigen [52]. However, compared to the sensitivity (498 GHz/RIU) of the BTR structure with metal materials, its sensitivity still needs improvement by redesigning the microstructure or changing the material parameters of hydrogenated BP monolayer, as well as other surface modification engineering [9].…”

Section: Treatmentmentioning

confidence: 70%

Hydrogenated Boron Phosphide THz-Metamaterial-Based Biosensor for Diagnosing COVID-19: A DFT Coupled FEM Study

et al. 2022

View full text Add to dashboard Cite

Recent reports focus on the hydrogenation engineering of monolayer boron phosphide and simultaneously explore its promising applications in nanoelectronics. Coupling density functional theory and finite element method, we investigate the bowtie triangle ring microstructure composed of boron phosphide with hydrogenation based on structural and performance analysis. We determine the carrier mobility of hydrogenated boron phosphide, reveal the effect of structural and material parameters on resonance frequencies, and discuss the variation of the electric field at the two tips. The results suggest that the mobilities of electrons for hydrogenated BP monolayer in the armchair and zigzag directions are 0.51 and 94.4 cm2·V−1·s−1, whereas for holes, the values are 136.8 and 175.15 cm2·V−1·s−1. Meanwhile, the transmission spectra of the bowtie triangle ring microstructure can be controlled by adjusting the length of the bowtie triangle ring microstructure and carrier density of hydrogenated BP. With the increasing length, the transmission spectrum has a red-shift and the electric field at the tips of equilateral triangle rings is significantly weakened. Furthermore, the theoretical sensitivity of the BTR structure reaches 100 GHz/RIU, which is sufficient to determine healthy and COVID-19-infected individuals. Our findings may open up new avenues for promising applications in the rapid diagnosis of COVID-19.

show abstract

Section: Treatmentmentioning

confidence: 70%

Hydrogenated Boron Phosphide THz-Metamaterial-Based Biosensor for Diagnosing COVID-19: A DFT Coupled FEM Study

et al. 2022

View full text Add to dashboard Cite

show abstract

“…Material properties are frequently dictated by the interactions and hence the way in which their constituent entities are assembled [1]. Consequently, molecular self-assembly has turned out to be an important 'bottom-up' approach to create intriguing materials of nano-and micro-structures, starting from simple components [2][3][4][5][6]. However, even with the best present-day synthetic approaches, accurate prediction of structures and the preparation of complementary nanostructures having efficiency equivalent to natural systems still remain a challenge and the ultimate goal of crystal engineers and supramolecular chemists [2][3][4][5][6].…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, molecular self-assembly has turned out to be an important 'bottom-up' approach to create intriguing materials of nano-and micro-structures, starting from simple components [2][3][4][5][6]. However, even with the best present-day synthetic approaches, accurate prediction of structures and the preparation of complementary nanostructures having efficiency equivalent to natural systems still remain a challenge and the ultimate goal of crystal engineers and supramolecular chemists [2][3][4][5][6]. The main reason is inadequate knowledge of intermolecular forces and poor understanding of the principles involved [7].…”

Section: Introductionmentioning

confidence: 99%

Molecular duplexes featuring NH···N, CH···O and CH···π interactions in solid-state self-assembly of triazine-based compounds

et al. 2022

View full text Add to dashboard Cite

Synthetic supramolecular structures constructed through the cooperative action of numerous non-covalent forces are highly desirable as models to unravel and understand the complexity of systems created in nature via self-assembly. Taking advantage of the low cost of 2,4,6-trichloro-1,3,5-triazine (cyanuric chloride) and the sequential nucleophilic substitution reactions with almost all types of nucleophiles, a series of six structurally related novel s-triazine derivatives 1–6 were synthesized and structurally characterized based on their physical, spectral and crystallographic data. The solid-state structures of all the six compounds showed intriguing and unique molecular duplexes featuring NH···N, CH···O and CH···π interactions. Careful analysis of different geometric parameters of the involved H-bonds indicates that they are linear, significant and are therefore responsible for guiding the three-dimensional structure of these compounds in the solid state. The prevalence of sextuple hydrogen bond array-driven molecular duplexes and the possibility of structural modifications on the s-triazine ring render these novel triazine derivatives 1–6 attractive as a platform to create heteroduplex constructs and their subsequent utility in the field of supramolecular chemistry and crystal engineering.

show abstract

Graphene‐based transparent and tunable plus‐shaped refractive index sensor for detecting waterborne bacteria

Patel,

Parmar,

Alsalman

et al. 2024

Micro & Optical Tech Letters

View full text Add to dashboard Cite

Waterborne bacteria cause many dangerous diseases as well as several health‐related issues hence detection of them is a global challenge today. A plus‐shaped graphene sensor to detect waterborne bacteria is presented in this paper. The detection mechanism is based upon the refractive index difference between waterborne bacteria sample and pure water which causes a change in resonance peak in the transmittance graph. The use of graphene material increases the sensitivity and also gives the tuning behavior by changing its potential. The effect of various parameters such as sensitivity (S), Q factor, figure of merit (FOM), and detection limit are discussed in the paper. The maximum values Q factor and FOM are 13.46 and 4.03 RIU−1 respectively. The minimum detection limit is 0.277 RIU. The proposed sensor exhibits the highest sensitivity of 255 GHz/RIU at the optimum condition which is comparably higher than previously published papers on biosensors. The proposed design with its highest sensitivity and good detection parameters can be helpful in detecting waterborne bacteria.

show abstract

Highly Sensitive Terahertz Dielectric Sensor for Liquid Crystal

Cited by 12 publications

References 34 publications

Hydrogenated Boron Phosphide THz-Metamaterial-Based Biosensor for Diagnosing COVID-19: A DFT Coupled FEM Study

Hydrogenated Boron Phosphide THz-Metamaterial-Based Biosensor for Diagnosing COVID-19: A DFT Coupled FEM Study

Molecular duplexes featuring NH···N, CH···O and CH···π interactions in solid-state self-assembly of triazine-based compounds

Graphene‐based transparent and tunable plus‐shaped refractive index sensor for detecting waterborne bacteria

Contact Info

Product

Resources

About