Graphene based photonic crystal optical filter: Design and exploration of the tunability

Ghasemi, Fatemeh; Entezar, Samad Roshan; Razi, Sepehr

doi:10.1016/j.physleta.2019.05.016

Cited by 44 publications

(14 citation statements)

References 51 publications

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“…[22] In 2019, Fatemeh et al used PCs with alternating layers of graphene and silica plates to achieve a tunable filter by adjusting the conductivity of graphene. [23] The phase change material VO 2 will convert from insulating phase to metal phase under thermal triggering. In 2012, Fan et al designed a waveguide PC coated with VO 2 layer to implement a terahertz modulator.…”

Section: Introductionmentioning

confidence: 99%

Thermal tunable one-dimensional photonic crystals containing phase change material*

Jia¹,

Ren²,

Chen³

2020

Chinese Phys. B

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To obtain the adjustable photonic crystals (PCs), we numerically investigate one-dimensional (1D) PCs with alternating VO2 and SiO2 layers through transfer matrix method. The dispersion relation agrees well with the transmittance obtained by the finite element calculation. Tunable band gaps are achieved with the thermal stimuli of VO2, which has two crystal structures. The monoclinic crystal structure VO2 (R) at low temperature exhibits insulating property, and the high temperature square rutile structure VO2 (M) presents metal state. Concretely, the bandwidth is getting narrower and red shift occurs with the higher temperature in VO2 (R)/SiO2 PCs structure. Based on the phase change characteristics of VO2, we can flexibly adjust the original structure as VO2 (R)/VO2 (M)/SiO2. By increasing the phase ratio of VO2 (R) to VO2 (M), the band gap width gradually becomes wider and blue shift occurs. The discrete layers of gradient composites on the dispersion of 1D PCs are also investigated, which enhances the feasibility in practical operation. Thus, our proposed thermal modulation PCs structure paves a new way to realize thermal tunable optical filters and sensors.

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Section: Introductionmentioning

confidence: 99%

Thermal tunable one-dimensional photonic crystals containing phase change material*

Jia¹,

Ren²,

Chen³

2020

Chinese Phys. B

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“…[194] For instance, graphene-integrated photonic crystals were fabricated by inserting graphene sheets between dielectrics/metallic layers in order to enhance the light coupling at the wavelengths ranging from far-infrared (IR) to the ultraviolet, and also, support the excitation of interband and intraband single particle and collective plasmons in this metamaterial synergy. [195,196] In clinics or bedside, light-based diagnostic and therapeutic devices present the incredible impact on patient outcomes through biosensing, molecular imaging, surgery, and therapy, and moreover, implantable or wearable photonic health monitoring devices are gained attention thanks to evolvement and multifunctionality in material science. Diverse classes of the materials including light-responsive (e.g., quantum dots (QDs), [197] plasmonic gold nanoparticles (AuNPs), [198] transition metal dichalcogenides, [199] and upconversion nanoparticles [200] ), light-delivering (e.g., silica fibers, [201] cellulose, [202] and silk [203] ), and stretchable electronic (e.g., elastomers [204] ) materials can be used for the development of implantable and wearable photonic healthcare devices.…”

Section: Photonic Materialsmentioning

confidence: 99%

Carbon‐Based Nanomaterials and Sensing Tools for Wearable Health Monitoring Devices

Erdem

Derin

Shirejini

et al. 2021

Adv Materials Technologies

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In this manner, sensor technologies have garnered great attention in various fields, including biomedicine, [2][3][4][5] environmental monitoring, [6][7][8][9] smart devices, [10] wearable devices, [11] automobile manufacturing [12] since the semiconductor materials and circuits have been developed. In particular, biosensors are powerful and innovative analytical tools that incorporate biological receptors to recognize biological analytes through either physical or chemical transducers. Primarily, bio-receptors are responsible for identifying and capturing target analytes, and the transducer basically translates biological and chemical information into the detectable signals, which are eventually converted into the concentration of the analyte. [13,14] Considering gold standard methods, such as enzyme-linked immunosorbent assay (ELISA) [15] and polymerase chain reaction (PCR)-based strategies, [16] biosensors mostly hold crucial features, such as i) short assay time, [17] ii) affordable tools and reagents, [18] iii) portability, [19] and iv) facile use and minimum user interpretation. [20] Nowadays, the applications of biosensors have been leveraged by the advancements of portable and miniaturized platforms. In particular, over the past years, wearable health monitoring devices have notable impact on continuous and real-time monitoring of health parameters, thereby accelerating the deployment of biosensing strategies to daily lives. Besides, non-invasive and ease-of-collecting information supports the benefits of the wearable systems for enhancing the awareness of individuals and communities. [21][22][23] The special features of the mechanically flexible and stable wearable sensors include remarkable means, such as portability, comfortability, light-weight, non-invasive, and reliable performance. To put it simply, wearable sensors are readily attached to skin or organ surfaces through an adhesive tape [24] or microneedles, [25] and because of such easy integrations, several researchers have focused on developing wearable sensors for real-time health monitoring. A wearable sensor is basically composed of some vital elements, including a flexible base material attached to the skin or an organ, a signal transfer electrode, and a biorecognition element. Recently, researchers have concentrated on creating integrated sensors that are able to measure various parameters simultaneously, such as pressure, temperature,The healthcare system has a drastic paradigm shift from centralized care to home-based and self-monitoring strategies; aiming to reach more individuals, minimize workload in hospitals, and reduce healthcare-associated expenses. Particularly, wearable technologies are garnering considerable interest by tracking physiological parameters through motion and activities, and monitoring biochemical markers from sweat, saliva, and tears. Through their integrations with sensors, microfluidics, and wireless communication systems, they allow physicians, family members, or individuals to monitor multiple parameters withou...

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“…Various nanostructures of graphene-based PCs have been designed and fabricated, including one-dimensional (1D), e.g., graphene nanolayers stacked and embedded between dielectric materials [57], two-dimensional (2D), e.g., nanocavities [58], periodic cylindrical holes in multilayered graphene [30], and three-dimensional (3D), e.g., inverse opal PCs (IO-PCs). According to various theoretical models that have been reported, PBG positions could be varied according to the thickness of dielectric layer [59] and by altering the chemical potential of graphene [9,30] for both 1D and 2D graphene-based PCs.…”

Section: Graphene-based Photonic Crystalsmentioning

confidence: 99%

Novel Structures and Applications of Graphene-Based Semiconductor Photocatalysts: Faceted Particles, Photonic Crystals, Antimicrobial and Magnetic Properties

et al. 2021

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Graphene, graphene oxide, reduced graphene oxide and their composites with various compounds/materials have high potential for substantial impact as cheap photocatalysts, which is essential to meet the demands of global activity, offering the advantage of utilizing “green” solar energy. Accordingly, graphene-based materials might help to reduce reliance on fossil fuel supplies and facile remediation routes to achieve clean environment and pure water. This review presents recent developments of graphene-based semiconductor photocatalysts, including novel composites with faceted particles, photonic crystals, and nanotubes/nanowires, where the enhancement of activity mechanism is associated with a synergistic effect resulting from the presence of graphene structure. Moreover, antimicrobial potential (highly needed these days), and facile recovery/reuse of photocatalysts by magnetic field have been addresses as very important issue for future commercialization. It is believed that graphene materials should be available soon in the market, especially because of constantly decreasing prices of graphene, vis response, excellent charge transfer ability, and thus high and broad photocatalytic activity against both organic pollutants and microorganisms.

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Graphene based photonic crystal optical filter: Design and exploration of the tunability

Cited by 44 publications

References 51 publications

Thermal tunable one-dimensional photonic crystals containing phase change material*

Thermal tunable one-dimensional photonic crystals containing phase change material*

Carbon‐Based Nanomaterials and Sensing Tools for Wearable Health Monitoring Devices

Novel Structures and Applications of Graphene-Based Semiconductor Photocatalysts: Faceted Particles, Photonic Crystals, Antimicrobial and Magnetic Properties

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