Bulletin of the American Physical Society
76th Annual Meeting of the Division of Fluid Dynamics
Sunday–Tuesday, November 19–21, 2023; Washington, DC
Session J46: Focus Session: Fluids Next - Fluid Dynamics of Injury
4:35 PM–6:19 PM,
Sunday, November 19, 2023
Room: 209BC
Chair: Anne Staples, Virginia Tech
Abstract: J46.00002 : Biomimetic Studies of Concussive Brain Injuries*
5:01 PM–5:27 PM
Presenter:
Ji Lang
(Southeast University)
Authors:
Ji Lang
(Southeast University)
Rungun Nathan
(Penn State Berks)
Qifu Wang
(Villanova University)
Anne E Staples
(Virginia Tech)
Liyun Wang
(University of Delaware)
Qianhong Wu
(Villanova University)
We have integrated theoretical models and numerical simulations to capture CSF's pressure response and shear stress and the corresponding brain response. Furthermore, we have innovatively used a biomimetic model, an egg yolk within a rigid shell, to mirror and study the mechanics of the soft brain matter within the hard skull. This model provides fresh insights into the dynamics of concussive brain injury. We have also developed an artificial 'smart brain' within a transparent skull to further probe the effects of sudden impacts on the brain. This 'smart brain' model was subsequently applied to rodent brain matter, leading to new revelations about the brain tissue's response to external forces.
Our pioneering study uncovers fundamental mechanisms involved in brain injury and indicates the importance of CSF in transmitting and mitigating external impacts. It paves the way for future research, highlighting the need for a comprehensive exploration of brain injury mechanisms, and could inform the development of enhanced head protection strategies.
*National Science Foundation under grant number 1511096, 2003077 and 2322067National Natural Science Foundation of China (No. 12202101)Natural Science Foundation of Jiangsu Province (No. BK20220793)
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