Design of a Novel Multiband Graphene-based Metamaterial Absorber for Terahertz Applications using different Geometric Shapes

Author(s):  
PATRI UPENDER ◽  
Amarjit Kumar
Author(s):  
N. B. Nikhil ◽  
Bhavana R. Nair ◽  
Ancilla Philip ◽  
Nilotpal ◽  
Anu Mohamed ◽  
...  

2022 ◽  
Vol 71 (2) ◽  
pp. 3905-3920
Author(s):  
Ismail Hossain ◽  
Md Samsuzzaman ◽  
Mohd Hafiz Baharuddin ◽  
Norsuzlin Binti Mohd Sahar ◽  
Mandeep Singh Jit Singh ◽  
...  

Plasmonics ◽  
2018 ◽  
Vol 14 (3) ◽  
pp. 737-742 ◽  
Author(s):  
Bhargav Appasani ◽  
Pallav Prince ◽  
Rajeev Kumar Ranjan ◽  
Nisha Gupta ◽  
Vijay Kumar Verma

Author(s):  
Prince Jain ◽  
Sahil Garg ◽  
Arvind K. Singh ◽  
Shonak Bansal ◽  
Krishna Prakash ◽  
...  

2020 ◽  
Vol 91 (3) ◽  
pp. 30901
Author(s):  
Yibo Tang ◽  
Longhui He ◽  
Jianming Xu ◽  
Hailang He ◽  
Yuhan Li ◽  
...  

A dual-band microwave metamaterial absorber with single-peak regulation and wide-angle absorption has been proposed and illustrated. The designed metamaterial absorber is consisted of hollow-cross resonators, solid-cross resonators, dielectric substrate and metallic background plane. Strong absorption peak coefficients of 99.92% and 99.55% are achieved at 8.42 and 11.31 GHz, respectively, which is basically consistent with the experimental results. Surface current density and changing material properties are employed to illustrate the absorptive mechanism. More importantly, the proposed dual-band metamaterial absorber has the adjustable property of single absorption peak and could operate well at wide incidence angles for both transverse electric (TE) and transverse magnetic (TM) waves. Research results could provide and enrich instructive guidances for realizing a single-peak-regulation and wide-angle dual-band metamaterial absorber.


2019 ◽  
Vol 1 (1) ◽  
pp. 22
Author(s):  
Carla Marilia Ayala Valladares ◽  
Juana Maria Cruz Montero ◽  
Angel Saldarriaga Melgar

The main purpose of the research was to determine the effects of the program of ludic activities for the learning of geometry in children of five years in all their dimensions orientation and location, geometric shapes and measurement, through its components: location in space, identify locations and positions of objects, identify and characterize geometric figures and communicate the qualities of these, likewise identify, classify magnitudes and use various measuring instruments. The type of research was applied, with a quasi-experimental design, the population was constituted by 103 children, and a non-probabilistic sample was used for convenience with a sample of 51 children, divided into two control and experimental groups. The geometry instrument was used to collect information. The favorable effect of the program of playful activities in the learning of geometric notions in children of initial - Callao, 2018 was determined.


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