Zobrazeno 1 - 10
of 337
pro vyhledávání: '"Nelson Tansu"'
Autor:
Md Saiful Islam, Aditi Upadhyay, Rajour Tanyi Ako, Nicholas P. Lawrence, Jakeya Sultana, Abhishek Ranjan, Brian Wai-Him Ng, Nelson Tansu, Madhu Bhaskaran, Sharath Sriram, Derek Abbott
Publikováno v:
Advanced Photonics Research, Vol 4, Iss 9, Pp n/a-n/a (2023)
The study of optical resonators is of significant importance in terms of their ability to confine light in optical devices. A major drawback of optical resonators is the phenomenon of light emission due to their limited capacity for light confinement
Externí odkaz:
https://doaj.org/article/b02cb4db387d4595972c15b23860ef6a
Publikováno v:
IEEE Photonics Journal, Vol 13, Iss 1, Pp 1-13 (2021)
We present the machine learning inspired design of two types of GaN zero contrast subwavelength gratings (SWGs): a polynomial-shaped grating and, for reference, a conventional rectangular grating, using the differential evolution algorithm to optimiz
Externí odkaz:
https://doaj.org/article/9c83068824f94801b04484231ae17f70
Autor:
Gunawan Witjaksono, Muhammad Junaid, Mohd Haris Khir, Zaka Ullah, Nelson Tansu, Mohamed Shuaib Bin Mohamed Saheed, Muhammad Aadil Siddiqui, Saeed S. Ba-Hashwan, Abdullah Saleh Algamili, Saeed Ahmed Magsi, Muhammad Zubair Aslam, Rab Nawaz
Publikováno v:
Molecules, Vol 26, Iss 21, p 6424 (2021)
Graphene as a material for optoelectronic design applications has been significantly restricted owing to zero bandgap and non-compatible handling procedures compared with regular microelectronic ones. In this work, nitrogen-doped reduced graphene oxi
Externí odkaz:
https://doaj.org/article/713cc921eb8d4804b686d9df10d5d125
Publikováno v:
Scientific Reports, Vol 7, Iss 1, Pp 1-8 (2017)
Abstract The III-Nitride digital alloy (DA) is comprehensively studied as a short-period superlattice nanostructure consisting of ultra-thin III-Nitride epitaxial layers. By stacking the ultra-thin III-Nitride epitaxial layers periodically, these nan
Externí odkaz:
https://doaj.org/article/93502ba047904cff91237a72a7a92ee6
Publikováno v:
AIP Advances, Vol 9, Iss 4, Pp 045013-045013-7 (2019)
A reduction of the threshold current density of InGaN quantum well (QW) lasers is found from the usage of AlGaInN barriers. Large bandgap and strain-managing AlGaInN barriers surrounding the InGaN quantum wells’ (QWs) active regions are investigate
Externí odkaz:
https://doaj.org/article/7e7bc2cf8535440a937513c57124f5e3
Publikováno v:
Nanomaterials, Vol 11, Iss 3, p 623 (2021)
The demand for carbon dioxide (CO2) gas detection is increasing nowadays. However, its fast detection at room temperature (RT) is a major challenge. Graphene is found to be the most promising sensing material for RT detection, owing to its high surfa
Externí odkaz:
https://doaj.org/article/af097793749b4d5598470e4cd8e00699
Autor:
Muhammad Junaid, M. H. Md Khir, Gunawan Witjaksono, Zaka Ullah, Nelson Tansu, Mohamed Shuaib Mohamed Saheed, Pradeep Kumar, Lee Hing Wah, Saeed Ahmed Magsi, Muhammad Aadil Siddiqui
Publikováno v:
Molecules, Vol 25, Iss 18, p 4217 (2020)
In recent years, the field of nanophotonics has progressively developed. However, constant demand for the development of new light source still exists at the nanometric scale. Light emissions from graphene-based active materials can provide a leading
Externí odkaz:
https://doaj.org/article/58109e517aa542919682375f21f39527
Autor:
Muhammad Junaid, M. H. Md Khir, Gunawan Witjaksono, Nelson Tansu, Mohamed Shuaib Mohamed Saheed, Pradeep Kumar, Zaka Ullah, Asfand Yar, Fahad Usman
Publikováno v:
Molecules, Vol 25, Iss 16, p 3646 (2020)
Graphene and its hybrids are being employed as potential materials in light-sensing devices due to their high optical and electronic properties. However, the absence of a bandgap in graphene limits the realization of devices with high performance. In
Externí odkaz:
https://doaj.org/article/34d2fb0571a94c50b29898655bb95453
Autor:
Zaka Ullah, Illani Nawi, Gunawan Witjaksono, Nelson Tansu, Muhammad Irfan Khattak, Muhammad Junaid, Muhammad Aadil Siddiqui, Saeed Ahmed Magsi
Publikováno v:
Sensors, Vol 20, Iss 11, p 3187 (2020)
Plasmonic antennas are attractive optical components of the optoelectronic devices, operating in the far-infrared regime for sensing and imaging applications. However, low optical absorption hinders its potential applications, and their performance i
Externí odkaz:
https://doaj.org/article/2d255127b2d24a1bacb58de41b57004c
Autor:
Zaka Ullah, Gunawan Witjaksono, Illani Nawi, Nelson Tansu, Muhammad Irfan Khattak, Muhammad Junaid
Publikováno v:
Sensors, Vol 20, Iss 5, p 1401 (2020)
Exceptional advancement has been made in the development of graphene optical nanoantennas. They are incorporated with optoelectronic devices for plasmonics application and have been an active research area across the globe. The interest in graphene p
Externí odkaz:
https://doaj.org/article/0e0413fae1fe4151a2a944f2ae60f809