Huajian Gao

Huajian Gao (born December 7, 1963) is a mechanician who is widely known for his contributions to the field of solid mechanics, particularly on the micro- and nanomechanics of thin films, hierarchically structured materials, and cell-nanomaterials interactions.

Education and career

Huajian Gao received his B.S. in Engineering Mechanics from Xi'an Jiaotong University of China in 1982, and his M.S. and Ph.D. in Engineering Science from Harvard University in 1984 and 1988, respectively. He taught at Stanford University between 1988 and 2002, where he was promoted to Associate Professor with tenure in 1994 and to full Professor in 2000. He joined the Max Planck Society in 2001 as a Director at the Max Planck Institute for Metals Research in Stuttgart, Germany. In 2006 he moved to Brown University as the Walter H. Annenberg Professor of Engineering.

Research

Professor Gao has a background in applied mechanics and engineering science. His research interests span over Solid Mechanics, Nanomechanics and Biomechanics. He works on mechanics of thin films and hierarchically structured materials, mechanics of biological and bio-inspired materials, mechanics of nanostructured and nanotwinned materials, mechanics of cell adhesion, mechanics of cell-nanomaterials interactions, mechanics of energy storage systems, and mechanics of metallic glasses.

Gao

Gao /ɡaʊ/ is a city in Mali and the capital of the Gao Region. The city is located on the River Niger, 320 km (200 mi) east-southeast of Timbuktu on the left bank at the junction with the Tilemsi valley.

For much of its history Gao was an important commercial centre involved in the trans-Saharan trade. In the 9th century external Arabic writers described Gao as an important regional power and by the end of the 10th century the local ruler was said to be a Muslim. Towards the end of the 13th century Gao became part of the Mali Empire, but in first half of the 15th century the town regained its independence and with the conquests of Sonni Ali (ruled 1464–1492) it became the capital of the Songhai Empire. The Empire collapsed after the Moroccan invasion in 1591 and the invaders chose to make Timbuktu their capital. By the time of Heinrich Barth's visit in 1854, Gao had declined to become an impoverished village with 300 huts constructed from matting. In 2009, the urban commune had a population of 86,633.

Gao (disambiguation)

Gao is a city in Mali and the capital of Gao Region.

Gao or GAO may also refer to:

Places

Languages

Battles

Other uses

Gao–Guenie meteorite

Gao–Guenie is a H5 ordinary chondrite meteorite fell on in 1960 in Burkina Faso, Africa. The fall was composed by a large number of fragments and it is one of the largest observed meteorite showers in Africa to date.

Name

The meteorites formerly known as Gao and Guenie in 1999 were officially paired and they name fused into the collective name Gao–Guenie.

History

Gao–Guenie meteorites fell in Burkina Faso on March 5, 1960 at 17:00 (local time). After three separate detonations, several thousands of stones rained down over an area of about 70 square kilometres (27 sq mi). The sound of the fall was heard as far as Ouagadougou, which is 100 kilometres (62 mi) away. Eyewitnesses said that some trees were broken and henhouses destroyed. The largest stones recovered weigh up to 10 kilograms (22 lb).

Composition and classification

Gao–Guenie is classified as H5 ordinary chondrite.

Surface details of a small oriented fragment

Surface details of a small oriented fragment

308 g sample