Journal of Nanophotonics最新文献_第4页

Multiple nonreciprocal transmission based on defect modes of photonic crystals 基于光子晶体缺陷模的多重非互易传输

4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-11-07 DOI: 10.1117/1.jnp.17.046002

Yu Shen, Xiaomeng Zhang, Guanxia Yu, Xin Chen, Haodong Wang, Guangyao Yuan

引用次数: 0

Enhanced thermo-optic effects in silicon nitride photonic integrated circuits via polymer claddings 通过聚合物包层增强氮化硅光子集成电路的热光学效应

4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-11-02 DOI: 10.1117/1.jnp.17.046001

Marcel W. Pruessner, Nathan F. Tyndall, Kyle J. Walsh, Todd H. Stievater

引用次数: 0

Optical field enhanced nonlinear optical performance of chalcogenide nanocomposite-based 1D photonic crystal 光场增强了硫系纳米复合材料一维光子晶体的非线性光学性能

4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-10-31 DOI: 10.1117/1.jnp.17.040501

Reena Gadhwal, Hukum Singh, Ambika Devi

引用次数: 0

Multiband topological states from band fold of photonic crystals 光子晶体带折叠的多带拓扑态

4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-09-15 DOI: 10.1117/1.jnp.17.036014

Fan Bu, Yun-Tuan Fang

引用次数: 0

Performance enhancement of thin film solar cells using silver triangular and rectangular grating on the back electrode 后电极银三角形和矩形光栅对薄膜太阳能电池性能的增强

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.JNP.17.036002

Safa Saminezhad, G. Kiani, Amir Asgharian

{"title":"Performance enhancement of thin film solar cells using silver triangular and rectangular grating on the back electrode","authors":"Safa Saminezhad, G. Kiani, Amir Asgharian","doi":"10.1117/1.JNP.17.036002","DOIUrl":"https://doi.org/10.1117/1.JNP.17.036002","url":null,"abstract":"Abstract. Thin film solar cells, which are the second generation of solar cells, have recently attracted much attention due to their low cost and abundance of fabrication materials. But due to the reduction in the thickness of the absorber layer in this generation to <0.5 μm, the amount of absorption is greatly reduced and the short circuit current density (Jsh) decreased due to the reduction of the light path length in the semiconductor. Therefore, light trapping is challenging in this generation to compensate for the reduced short circuit current. In this work, crystalline and amorphous silicon thin film solar cells, which are types of thin film solar cells have been investigated. In this study, using silver metal gratings with triangular and rectangular shapes on the back electrode of the solar cell, we investigated the effect of the grating structure on increasing absorption of the solar cell. Crystalline silicon (c-Si) and amorphous silicon (a-Si) have been used as absorber layer material due to their unique characteristics, such as low cost, abundance, and well established. The results show that by applying the optimal structure of grating in crystalline silicon solar cells, compared with the simple solar cell, the efficiency and short current of the cell increased from 8.87% and 16.81 (mA / cm2) to 13.34% and 24.78 (mA / cm2), respectively. And for the solar cell with amorphous silicon absorber layer, this increase in efficiency and short circuit current has reached from 14.75% and 28.74 (mA / cm2) to 15.22% and 29.6 (mA / cm2), respectively. This increase in electrical parameters of solar cells illustrates the positive effects of back grating structures in improvement of solar cell performance.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44722488","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Plasmonic switch based on asymmetric cavities with embedding square of gold inside the cavities 基于非对称腔体的等离子体开关，在腔体内嵌入正方形金

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.jnp.17.036004

Majid Ghadrdan, Mojtaba Shahraki, Mohammad Ali Mansouri-Birjandi

引用次数: 0

Sandwich heterostructure of transition metal dichalcogenide/graphene as tunable lateral reflection shifter 作为可调横向反射移位器的过渡金属二硫化物/石墨烯夹层异质结构

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.JNP.17.036012

Maryam Zoghi

{"title":"Sandwich heterostructure of transition metal dichalcogenide/graphene as tunable lateral reflection shifter","authors":"Maryam Zoghi","doi":"10.1117/1.JNP.17.036012","DOIUrl":"https://doi.org/10.1117/1.JNP.17.036012","url":null,"abstract":"Abstract. The advent of nanotechnology has led to the inevitable need for miniaturization in optoelectronic devices. To achieve this goal, materials with low thickness, conductivity, and transparency, as well as a larger active area, must be developed. Experiments have proven that the opto-electrical properties of transition metal dichalcogenides (TMD)/graphene combinations are highly tunable. On the other hand, a notable feature of light when reflecting from an interface is its spatial and angular displacements. The “lateral shift” in the incident plane, referred to as the Goos–Hanchen (GH) shift, has garnered significant interest among researchers owing to its extensive range of applications. In our work, an atomically thin TMD/graphene/TMD sandwich heterostructure is proposed, and its spatial and angular GH shifts are investigated. The theoretical analysis includes various TMD materials such as MoSe2, MoS2, WSe2, and WS2. A detailed study of the effects of wavelength, polarization, incident angle, and number of TMD layers in symmetric and asymmetric structures suggests that this hybrid can serve as an ultrathin broadband tunable sensor in optical devices.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46066978","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep learning aids simultaneous structure–material design discovery: a case study on designing phase change material metasurfaces 深度学习有助于同时发现结构-材料设计:相变材料元表面设计的案例研究

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.JNP.17.036006

Soumyashree S. Panda, Sushil Kumar, D. Tripathi, R. Hegde

{"title":"Deep learning aids simultaneous structure–material design discovery: a case study on designing phase change material metasurfaces","authors":"Soumyashree S. Panda, Sushil Kumar, D. Tripathi, R. Hegde","doi":"10.1117/1.JNP.17.036006","DOIUrl":"https://doi.org/10.1117/1.JNP.17.036006","url":null,"abstract":"Abstract. The capabilities of modern precision nanofabrication and the wide choice of materials [plasmonic metals, high-index dielectrics, phase change materials (PCM), and 2D materials] make the inverse design of nanophotonic structures such as metasurfaces increasingly difficult. Deep learning is becoming increasingly relevant for nanophotonics inverse design. Although deep learning design methodologies are becoming increasingly sophisticated, the problem of the simultaneous inverse design of structure and material has not received much attention. In this contribution, we propose a deep learning-based inverse design methodology for simultaneous material choice and device geometry optimization. To demonstrate the utility of the proposed method, we consider the topical problem of active metasurface design using PCMs. We consider a set of four commonly used PCMs in both fully amorphous and crystalline material phases for the material choice and an arbitrarily specifiable polygonal meta-atom shape for the geometry part, which leads to a vast structure/material design space. We find that a suitably designed deep neural network can achieve good optical spectrum prediction capability in an ample design space. Furthermore, we show that this forward model has a sufficiently high predictive ability to be used in a surrogate-optimization setup resulting in the inverse design of active metasurfaces of switchable functionality.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44357234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Agricultural soil health monitoring using photonic crystal fiber based on combined principles of surface plasmon resonance and interferometry for lead ion detection 基于表面等离子体共振和干涉测量相结合原理的光子晶体光纤用于铅离子检测的农业土壤健康监测

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.JNP.17.036013

Sudipta Kumari Panigrahy, Preeti Das, S. K. Tripathy

{"title":"Agricultural soil health monitoring using photonic crystal fiber based on combined principles of surface plasmon resonance and interferometry for lead ion detection","authors":"Sudipta Kumari Panigrahy, Preeti Das, S. K. Tripathy","doi":"10.1117/1.JNP.17.036013","DOIUrl":"https://doi.org/10.1117/1.JNP.17.036013","url":null,"abstract":"Abstract. To monitor the health of agricultural soil, lead (Pb2 + ) ion measurement is essential. The various sensors for lead ion detection reported in the literature earlier are either expensive or have complicated designs. This inspired us to propose a fiber optic sensor that is simple in design, less expensive, and more efficient. A photonic crystal fiber (PCF)-unclad single mode fiber (SMF)-PCF hybrid configuration makes up the suggested sensor, and the sensing mechanism is based on a synergistic application of surface plasmon resonance and interferometry. It is shown that the suggested structure is easy to use for Pb2 + ion detection, in addition to other advantages in limit of detection (LOD) and sensitivity. The proposed structure is optimized to attain a LOD of 8.32 mg / kg, which is much less than the permissible limit of Pb2 + ions permitted in healthy agricultural soil, i.e., 100 to 400 mg / kg. Additionally, a polymer that is attached atop the gold layer and to which only Pb2 + ions can adhere ensures the sensor’s specificity. To the best of our knowledge, our proposed optical fiber-based sensor design and approach adopted to detect lead ions in agricultural soil are the first of their kind.","PeriodicalId":16449,"journal":{"name":"Journal of Nanophotonics","volume":null,"pages":null},"PeriodicalIF":1.5,"publicationDate":"2023-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43400233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

On temporally periodic physical vapor deposition on random rough surfaces (Erratum) 随机粗糙表面上的时间周期物理气相沉积（勘误表）

IF 1.5 4区物理与天体物理

Journal of Nanophotonics Pub Date : 2023-07-01 DOI: 10.1117/1.jnp.17.039901

Ricardo A. Fiallo, Chengzhi Li, A. Lakhtakia, M. Horn

引用次数: 0