Abdelsalam Ahmed

Abdelsalam Ahmed

Harvard University

H-index: 22

North America-United States

About Abdelsalam Ahmed

Abdelsalam Ahmed, With an exceptional h-index of 22 and a recent h-index of 20 (since 2020), a distinguished researcher at Harvard University, specializes in the field of Ingestible Electronics, Bioelectronics, Implantables, Wearables, Artificial Intelligence.

His recent articles reflect a diverse array of research interests and contributions to the field:

Multifaceted, printable skin-integrated electronics for monitoring physiological functions

Powering Implantable and Ingestible Electronics

Toward High‐Performance Triboelectric Nanogenerators by Engineering Interfaces at the Nanoscale: Looking into the Future Research Roadmap

Multifunctional smart electronic skin fabricated from two-dimensional like polymer film

A theoretical modeling analysis for triboelectrification controlled light emitting diodes

Triboelectric nanogenerator versus piezoelectric generator at low frequency (< 4 Hz): a quantitative comparison

Abdelsalam Ahmed Information

University

Harvard University

Position

- Massachusetts Institute of Technology

Citations(all)

1878

Citations(since 2020)

1606

Cited By

891

hIndex(all)

22

hIndex(since 2020)

20

i10Index(all)

25

i10Index(since 2020)

23

Email

University Profile Page

Harvard University

Abdelsalam Ahmed Skills & Research Interests

Ingestible Electronics

Bioelectronics

Implantables

Wearables

Artificial Intelligence

Top articles of Abdelsalam Ahmed

Multifaceted, printable skin-integrated electronics for monitoring physiological functions

Authors

Abdelsalam Ahmed,Islam Hassan,Celine Ling

Journal

Journal of Materials Chemistry C

Published Date

2022

Printable skin-like power sources and self-powered electronic devices can be bio-integrated with the skin for broad applications in human healthcare and human–machine interfaces, among others. Nevertheless, most existing printed skin-like electronic devices have restricted functionality, unfavorable physiological effects, and restricted long-term feasibility, which constrain the mimicking of real human skin. Here, a simple and effective stencil sublimation printing (SSP) approach for fabricating a substrate-free energy harvesting-multifunctional-sensing system that can be directly printed onto the human skin with high breathability, high flexibility, conformability, on-skin adhesion, anti-inflammation, dry-degradability, and easy-washability is reported. Furthermore, the resulting system functions as an on-skin biofunctional power source and a multifunctional physiological sensing platform that can detect pressure …

Powering Implantable and Ingestible Electronics

Authors

So‐Yoon Yang,Vitor Sencadas,Siheng Sean You,Neil Zi‐Xun Jia,Shriya Sruthi Srinivasan,Hen‐Wei Huang,Abdelsalam Elrefaey Ahmed,Jia Ying Liang,Giovanni Traverso

Published Date

2021/10

Implantable and ingestible biomedical electronic devices can be useful tools for detecting physiological and pathophysiological signals, and providing treatments that cannot be done externally. However, one major challenge in the development of these devices is the limited lifetime of their power sources. The state‐of‐the‐art of powering technologies for implantable and ingestible electronics is reviewed here. The structure and power requirements of implantable and ingestible biomedical electronics are described to guide the development of powering technologies. These powering technologies include novel batteries that can be used as both power sources and for energy storage, devices that can harvest energy from the human body, and devices that can receive and operate with energy transferred from exogenous sources. Furthermore, potential sources of mechanical, chemical, and electromagnetic energy …

Toward High‐Performance Triboelectric Nanogenerators by Engineering Interfaces at the Nanoscale: Looking into the Future Research Roadmap

Authors

Abdelsalam Ahmed,Islam Hassan,Amir Masoud Pourrahimi,Ahmed S Helal,Maher F El‐Kady,Hamidreza Khassaf,Richard B Kaner

Published Date

2020/11

To meet the future need for clean and sustainable energies, there has been considerable interest in the development of triboelectric nanogenerators (TENGs) that scavenge waste mechanical energies. The performance of a TENG at the macroscale is determined by the multifaceted role of surface and interface properties at the nanoscale, whose understanding is critical for the future development of TENGs. Therefore, various protocols from the atomic to the macrolevel for fabrication and tuning of surfaces and interfaces are required to obtain the desired TENG performance. These protocols branch out into three categories: chemical engineering, physical engineering, and structural engineering. Chemical engineering is an affordable and optimal strategy for introducing more surface polarities and higher work functions for the improvement of charge transfer. Physical engineering includes the utilization of surface …

Multifunctional smart electronic skin fabricated from two-dimensional like polymer film

Authors

Abdelsalam Ahmed,Ying-Shi Guan,Islam Hassan,Celine Ling,Zheng Li,Islam Mosa,Gayatri Phadke,Ponnambalam Ravi Selvaganapathy,Shuquan Chang,Shenqiang Ren

Journal

Nano Energy

Published Date

2020/9/1

Smart skin-like electronics are urgently crucial for artificial muscles, while the development of self-powered two-dimensional-like multifunctional material systems remains significant challenges. Here, we demonstrate a new class of printed smart electronic skin (SES) with multi-sensing properties and energy conversion capability using simple and cost-effective printing techniques. The resulting all-organic self-powering SES functioning as a human-monitoring device where it can detect a variety of external stimuli and works as an ultra-flexible biomechanical energy harvester. Remarkably, our SES exhibits excellent antibacterial properties in addition to self-adaptive performance under various conditions, such as being bent, cut, sewed, hammered, punctured, and washed. The proposed SES devices here have the promise for broad applications in future functional-wearables for human-machine interface, soft robotics …

A theoretical modeling analysis for triboelectrification controlled light emitting diodes

Authors

Abdelsalam Ahmed,Mohamed Shehata,Islam Hassan,Yasmine I Abdelhak,Efe Cigdem,Maher El-Kady,Yehea Ismail,Hassan Mostafa

Journal

Nano Energy

Published Date

2020/8/1

In this paper, we demonstrate the use of triboelectric nanogenerator (TENG) as a mean of mechanical light triggering to control InGaN-based light-emitting diodes (LEDs). Light extraction from the LED is two successive steps process. First, the voltage produced by the TENG is used to control the gate-to-source current of a MOSFET transistor through adjusting the transistor channel width and length. The second step is forwarding the drain-source current resulting from MOSFET transistor to the LED as its injection current to induce spontaneous emission from the LED surface to the air. Three LED colors are considered: red, green and blue. Significant emitted power from these InGaN-based LEDs in the RGB wavelength band is observed for both P-MOSFET and N-MOSFET transistor configurations. The emitted optical spectrum is controlled by optimizing the combined TENG-MOSFET-RGB LED geometry; dimensions …

Triboelectric nanogenerator versus piezoelectric generator at low frequency (< 4 Hz): a quantitative comparison

Authors

Abdelsalam Ahmed,Islam Hassan,Ahmed S Helal,Vitor Sencadas,Ali Radhi,Chang Kyu Jeong,Maher F El-Kady

Journal

iScience

Published Date

2020

Triboelectric nanogenerators (TENGs) and piezoelectric generators (PGs) are generally considered the two most common approaches for harvesting ambient mechanical energy that is ubiquitous in our everyday life. The main difference between the two generators lies in their respective working frequency range. Despite the remarkable progress, there has been no quantitative studies on the operating frequency band of the two generators at frequency values below 4 Hz, typical of human motion. Here, the two generators are systematically compared based on their energy harvesting capabilities below 4 Hz. Unlike PGs, the TENG demonstrates higher power performance and is almost independent of the operating frequency, making it highly efficient for multi-frequency operation. In addition, PGs were shown to be inapplicable for charging capacitors when a rectifier was attached to the system. The results of this …

See List of Professors in Abdelsalam Ahmed University(Harvard University)

Abdelsalam Ahmed FAQs

What is Abdelsalam Ahmed's h-index at Harvard University?

The h-index of Abdelsalam Ahmed has been 20 since 2020 and 22 in total.

What are Abdelsalam Ahmed's top articles?

The articles with the titles of

Multifaceted, printable skin-integrated electronics for monitoring physiological functions

Powering Implantable and Ingestible Electronics

Toward High‐Performance Triboelectric Nanogenerators by Engineering Interfaces at the Nanoscale: Looking into the Future Research Roadmap

Multifunctional smart electronic skin fabricated from two-dimensional like polymer film

A theoretical modeling analysis for triboelectrification controlled light emitting diodes

Triboelectric nanogenerator versus piezoelectric generator at low frequency (< 4 Hz): a quantitative comparison

are the top articles of Abdelsalam Ahmed at Harvard University.

What are Abdelsalam Ahmed's research interests?

The research interests of Abdelsalam Ahmed are: Ingestible Electronics, Bioelectronics, Implantables, Wearables, Artificial Intelligence

What is Abdelsalam Ahmed's total number of citations?

Abdelsalam Ahmed has 1,878 citations in total.

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