Highly sensitive PDMS-filled Fabry–Perot interferometer temperature sensor based on the Vernier effect

Hou, Leyi; Chen, Zhao; Xu, Bingjie; Mao, Bangning; Shen, Changyu; Wang, D. N.

doi:10.1364/ao.58.004858

Cited by 81 publications

(21 citation statements)

References 23 publications

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“…This behavior indicates that these assemblies are not gel-like aggregates, but instead liquid-like droplets with highly fluid properties, as have been observed for other phase-separating proteins. [27,28] Consistent with the turbidity measurements ( Figure 1D), the size of the observed droplets decreased with decreasing number of continuous guanines in the ssDNA sequence. In the case of poly(dA), only small droplets (diameter < 1.0 µm) were formed.…”

Section: Llps Of G-quadruplex-forming Ssdna With H1supporting

confidence: 85%

Quadruplex folding promotes the condensation of linker histones and DNAs via liquid-liquid phase separation

Mimura¹,

Tomita

Shinkai³

et al. 2021

Preprint

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<p>Liquid-liquid phase separation (LLPS) of proteins and DNA has recently emerged as a possible mechanism underlying the dynamic organization of chromatin. We herein report the role of DNA quadruplex folding in liquid droplet formation via LLPS induced by interactions between DNA and linker histone H1 (H1), a key regulator of chromatin organization. Fluidity measurements inside the droplets and binding assays using G-quadruplex-selective probes demonstrated that quadruplex DNA structures, such as the G-quadruplex and i-motif, promote droplet formation with H1 and decrease molecular motility within droplets. The dissolution of the droplets in the presence of additives indicated that in addition to electrostatic interactions between the DNA and the intrinsically disordered region of H1, π-π stacking between quadruplex DNAs could potentially drive droplet formation. Given that DNA quadruplex structures are well documented in heterochromatin regions, it is imperative to understand the role of DNA quadruplex folding in the context of intranuclear LLPS.<b></b></p>

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Section: Llps Of G-quadruplex-forming Ssdna With H1supporting

confidence: 85%

Quadruplex folding promotes the condensation of linker histones and DNAs via liquid-liquid phase separation

Mimura¹,

Tomita

Shinkai³

et al. 2021

Preprint

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“…In terms of applications, the configurations using FPIs were mainly used for temperature [15,16,20,23,25,29,30,32,34,38] and strain sensing. [9,12,18,19,35] Apart from these two applications, others such as magnetic field sensing, [9] gas refractive index, [21,26] and pressure sensing, [17,24] airflow sensing, [22] hydrogen sensing, [14] humidity sensing, [13] volatile organic compounds sensing, [28] and refractive index sensing of liquids [31] were also reported.…”

Section: Fabry-perot Interferometersmentioning

confidence: 99%

Optical Vernier Effect: Recent Advances and Developments

Gomes

Bartelt

Frazão

2021

Laser & Photonics Reviews

190

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The optical analog of the Vernier effect applied to fiber interferometers is a recent tool to enhance the sensitivity and resolution of optical fiber sensors. This effect relies on the overlap between the signals of two interferometers with slightly detuned interference frequencies. The Vernier envelope modulation generated at the output spectrum presents magnified sensing capabilities (i.e., magnified wavelength shift) compared to that of the individual sensing interferometers that constitute the system, leading to a new generation of highly sensitive fiber sensing devices. This review analyses the recent advances and developments of the optical Vernier effect from a fiber sensing point-of-view. Initially, the fundamentals of the effect are introduced, followed by an extensive review on the state-of-the-art, presenting all the different configurations and types of fiber sensing interferometers used to introduce the optical Vernier effect. This paper also includes an overview of the complex case of enhanced Vernier effect and the introduction of harmonics to the effect.

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“…The fiber Fabry-Perot interferometer (FPI) has been widely used in many fields due to its stable interference fringes, easy demodulation, and compact structure [1][2][3][4]. In recent decades, fiber optic FPI sensors have been studied for their excellent performance benefits, such as low cost, fast response, anti-electromagnetic interference ability, and durability in harsh environments [5][6][7][8]. The structure of the fiber optic FPI sensor can be grouped into two categories: (i) an intrinsic Fabry-Perot interferometer (IFPI), where the light is reflected by the reflector inside the fiber, a typical example is how the IFPI can be formed by a pair of Bragg gratings separated by a small gap [9], and (ii) an extrinsic Fabry-Perot interferometer (EFPI), where the light exits the fiber and propagates inside the external cavity.…”

Section: Introductionmentioning

confidence: 99%

Study of the Vernier Effect Based on the Fabry–Perot Interferometer: Methodology and Application

et al. 2021

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The optical Vernier effect is a powerful tool for improving the sensitivity of an optical sensor, which relies on the use of two sensor units with slightly detuned frequencies. However, an improper amount of detuning can easily cause the Vernier effect to be unusable. In this work, the effective generation range of the Vernier effect and the corresponding interferometer configuration are suggested and experimentally demonstrated through a tunable cascaded Fabry–Perot interferometer structure. We further demonstrate a practical method to increase the magnification factor of the Vernier effect based on the device bandwidth. Only the optical path length of an interferometer probe and the sensitivity of the measurement parameters are needed to design this practical interferometer based on the Vernier effect. Our results provide potential insights for the sensing applications of the Vernier effect.

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Highly sensitive PDMS-filled Fabry–Perot interferometer temperature sensor based on the Vernier effect

Cited by 81 publications

References 23 publications

Quadruplex folding promotes the condensation of linker histones and DNAs via liquid-liquid phase separation

Quadruplex folding promotes the condensation of linker histones and DNAs via liquid-liquid phase separation

Optical Vernier Effect: Recent Advances and Developments

Study of the Vernier Effect Based on the Fabry–Perot Interferometer: Methodology and Application

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