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Ahmed Zewail

Ahmed

Zewail

Caltech Professor and Nobel Laureate

California Institute of Technology

Pasadena, California, USA

Ahmed Zewail was an Egyptian American chemist, Caltech professor, and Nobel laureate known as a founder of femtochemistry. His ultrafast laser work made it possible to observe chemical reactions at femtosecond timescales, earning him the 1999 Nobel Prize in Chemistry and a lasting place in modern science.

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Photo: Simon Fraser University, University CommunicationsWikimedia Commons file pageCC BY 2.0

About

Ahmed Zewail was an Egyptian American chemist, Caltech professor, and Nobel laureate known as a founder of femtochemistry. His ultrafast laser work made it possible to observe chemical reactions at femtosecond timescales, earning him the 1999 Nobel Prize in Chemistry and a lasting place in modern science.

Expertise

Technical

Physical ChemistryFemtochemistryUltrafast Spectroscopy

Leadership

Scientific LeadershipAcademic Mentorship

Education

Nobel Prize in Chemistry

Nobel Foundation

1999

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Wolf Prize in Chemistry

Wolf Foundation

1993

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Othmer Gold Medal

Science History Institute

2009

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Famous For

Femtochemistry Research

Completed

1999

Pioneering ultrafast laser research that allowed scientists to observe chemical reactions as bonds break and form.

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Physical Biology Center for Ultrafast Science and Technology

Live

2005

Caltech research center advancing ultrafast imaging, chemistry, biology, and materials science.

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US Science Envoy for the Middle East

Completed

2009

Science diplomacy work connecting education, research, and innovation across the United States and the Middle East.

What people say about Ahmed Zewail

Ahmed Zewail showed us time itself. His femtochemistry work redefined what we believed was possible to observe, a permanent contribution to human knowledge.

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Featured Articles

1
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Technology

Science, Emotion AI, and Egyptian American Innovation

From femtochemistry to Emotion AI, Ahmed Zewail and Rana el Kaliouby show how science becomes global impact.

Rana el Kaliouby
with Rana
Apr 27, 2026
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Ahmed Zewail