User profiles for "author:Nisar Ahmed"

Nisar Ahmed

- Verified email at usc.edu - Cited by 13057

Nisar Ahmed

- Verified email at cardiff.ac.uk - Cited by 1579

Nisar R. Ahmed

- Verified email at colorado.edu - Cited by 1324

[HTML][HTML] Electrifying green synthesis: recent advances in electrochemical annulation reactions

GM Martins, GC Zimmer, SR Mendes, N Ahmed - Green chemistry, 2020 - pubs.rsc.org
Electricity originating from renewable resources can be used for highly sustainable and
economically attractive applications. With electrons as the mass-free reagent, the use of a …

Terabit free-space data transmission employing orbital angular momentum multiplexing

J Wang, JY Yang, IM Fazal, N Ahmed, Y Yan… - Nature …, 2012 - nature.com
The recognition in the 1990s that light beams with a helical phase front have orbital angular
momentum has benefited applications ranging from optical manipulation to quantum …

[HTML][HTML] Using exogenous melatonin, glutathione, proline, and glycine betaine treatments to combat abiotic stresses in crops

M Khalid, HM Rehman, N Ahmed, S Nawaz… - International Journal of …, 2022 - mdpi.com
Abiotic stresses, such as drought, salinity, heat, cold, and heavy metals, are associated with
global climate change and hamper plant growth and development, affecting crop yields and …

Optical communications using orbital angular momentum beams

AE Willner, H Huang, Y Yan, Y Ren… - Advances in optics …, 2015 - opg.optica.org
Orbital angular momentum (OAM), which describes the “phase twist”(helical phase pattern)
of light beams, has recently gained interest due to its potential applications in many diverse …

[HTML][HTML] High-capacity millimetre-wave communications with orbital angular momentum multiplexing

Y Yan, G Xie, MPJ Lavery, H Huang, N Ahmed… - Nature …, 2014 - nature.com
One property of electromagnetic waves that has been recently explored is the ability to
multiplex multiple beams, such that each beam has a unique helical phase front. The …

“Dave... I can assure you... that it's going to be all right...” A definition, case for, and survey of algorithmic assurances in human-autonomy trust relationships

BW Israelsen, NR Ahmed - ACM Computing Surveys (CSUR), 2019 - dl.acm.org
People who design, use, and are affected by autonomous artificially intelligent agents want
to be able to trust such agents—that is, to know that these agents will perform correctly, to …

100 Tbit/s free-space data link enabled by three-dimensional multiplexing of orbital angular momentum, polarization, and wavelength

H Huang, G Xie, Y Yan, N Ahmed, Y Ren, Y Yue… - Optics letters, 2014 - opg.optica.org
We investigate the orthogonality of orbital angular momentum (OAM) with other multiplexing
domains and present a free-space data link that uniquely combines OAM-, polarization-, and …

Concentrations and dietary exposure to polycyclic aromatic hydrocarbons (PAHs) from grilled and smoked foods

H Alomirah, S Al-Zenki, S Al-Hooti, S Zaghloul… - Food control, 2011 - Elsevier
We investigated the concentrations and profiles of 16 priority polycyclic aromatic
hydrocarbons (PAHs) in various grilled and smoked foods and estimated the dietary …

[HTML][HTML] Mode division multiplexing using an orbital angular momentum mode sorter and MIMO-DSP over a graded-index few-mode optical fibre

H Huang, G Milione, MPJ Lavery, G Xie, Y Ren… - Scientific reports, 2015 - nature.com
Mode division multiplexing (MDM)–using a multimode optical fiber's N spatial modes as data
channels to transmit N independent data streams–has received interest as it can potentially …

Atmospheric turbulence effects on the performance of a free space optical link employing orbital angular momentum multiplexing

Y Ren, H Huang, G Xie, N Ahmed, Y Yan, BI Erkmen… - Optics letters, 2013 - opg.optica.org
We experimentally investigate the performance of an orbital angular momentum (OAM)
multiplexed free space optical (FSO) communication link through emulated atmospheric …