title: Shock-Induced Ordering in a Nano-segregated Network-Forming Ionic Liquid.
abstract: Understanding shockwave-induced physical and chemical changes of impact-absorbing materials is an important step toward the rational design of materials that mitigate the damage. In this work, we report a series of network-forming ionic liquids (NILs) that possess an intriguing shockwave absorption property upon laser-induced shockwave. Microstructure analysis by X-ray scattering suggests nano-segregation of alkyl side chains and charged head groups in NILs. Further post-shock observations indicate changes in the low-Q region, implying that the soft alkyl domain in NILs plays an important role in absorbing shockwaves. Interestingly, we observe a shock-induced ordering in the NIL with the longest (hexyl) side chain, indicating that both nano-segregated structure and shock-induced ordering contribute to NIL's shockwave absorption performance.
authors.affiliation: Department of Materials Science and Engineering, ‡Department of Chemistry, and §Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States.
authors.forename: Ke
authors.initials: K
authors.lastname: Yang
authors.affiliation: Department of Materials Science and Engineering, ‡Department of Chemistry, and §Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States.
authors.forename: Jaejun
authors.initials: J
authors.lastname: Lee
authors.affiliation: Department of Materials Science and Engineering, ‡Department of Chemistry, and §Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States.
authors.forename: Nancy R
authors.initials: NR
authors.lastname: Sottos
authors.affiliation: Department of Materials Science and Engineering, ‡Department of Chemistry, and §Beckman Institute for Advanced Science and Technology, University of Illinois at Urbana-Champaign , Urbana, Illinois 61801, United States.
authors.forename: Jeffrey S
authors.initials: JS
authors.lastname: Moore