Robotic pendant drop:containerless liquid for μs-resolved,AI-executable XPCS  

作　　者：Doga Yamac Ozgulbas Don Jensen Jr. Rory Butler Rafael Vescovi Ian T.Foster Michael Irvin Yasukazu Nakaye Miaoqi Chu Eric M.Dufresne Soenke Seifert Gyorgy Babnigg Arvind Ramanathan Qingteng Zhang 

机构地区：[1]Data Science and Learning Division,Argonne National Laboratory,Lemont,IL 60439,USA [2]X-ray Science Division,Argonne National Laboratory,Lemont,IL 60439,USA [3]Departement of Computer Science,University of Chicago,5801 S Ellis Ave,Chicago,IL 60637,USA [4]XRD Design and Engineering Department,Rigaku Corporation 3-9-12 Matsubara-cho,Akishima-shi,Tokyo 196-8666,Japan [5]Bioscience Division,Argonne National Laboratory,Lemont,IL 60439,USA

出　　处：《Light(Science & Applications)》2023年第9期1857-1866,共10页光（科学与应用)（英文版）

基　　金：supported by Laboratory Directed Research and Development funding(LDRD 2021-0138)from Argonne National Laboratory,provided by the Director,Office of Science,of the US Department of Energy under Contract No.DE-AC02-06CH11357。

摘　　要：The dynamics and structure of mixed phases in a complex fluid can significantly impact its material properties,such as viscoelasticity.Small-angle X-ray Photon Correlation Spectroscopy(SA-XPCS)can probe the spontaneous spatial fluctuations of the mixed phases under various in situ environments over wide spatiotemporal ranges(10−6–103 s/10−10–10−6 m).Tailored material design,however,requires searching through a massive number of sample compositions and experimental parameters,which is beyond the bandwidth of the current coherent X-ray beamline.Using 3.7-μs-resolved XPCS synchronized with the clock frequency at the Advanced Photon Source,we demonstrated the consistency between the Brownian dynamics of~100 nm diameter colloidal silica nanoparticles measured from an enclosed pendant drop and a sealed capillary.The electronic pipette can also be mounted on a robotic arm to access different stock solutions and create complex fluids with highly-repeatable and precisely controlled composition profiles.This closed-loop,AI-executable protocol is applicable to light scattering techniques regardless of the light wavelength and optical coherence,and is a first step towards high-throughput,autonomous material discovery.

关 键 词：RESOLVED sealed mounted 

分 类 号：O43[机械工程—光学工程]