ENGINEERING THE
QUANTUM
FUTURE
Upcoming Events and Visitors
Join our seminars and meet the QNS visitors!
https://www.traditionrolex.com/13
october
01aprallday31marJinhyoung LeeSungkyunkwan University (SKKU)(All Day) KST
Event Details
Jinhyoung Lee Affiliation: Sungkyunkwan University (SKKU) Research Interests: Atomic Force Microscopy, Scanning Tunneling Microscopy, Twistronicsvan der Waals
Event Details
Jinhyoung Lee
Affiliation: Sungkyunkwan University (SKKU)
Research Interests: Atomic Force Microscopy, Scanning Tunneling Microscopy, Twistronicsvan der Waals Materials
Time
April 1 (Monday) - March 31 (Monday)
01sepallday31augYou-Shin NoKonkuk University(All Day) KST
Event Details
You-Shin No Affiliation: Konkuk University, Seoul Research Interests: Low-dimensional optical nanomaterials and nanostructures and nanodevices
Event Details
You-Shin No
Affiliation: Konkuk University, Seoul
Research Interests: Low-dimensional optical nanomaterials and nanostructures and nanodevices
Time
September 1 (Sunday) - August 31 (Sunday)
31octalldayHuijun HanUlsan National Institute of Science & Technology (UNIST)(All Day: thursday) KST
Event Details
Huijun Han Affiliation: Ulsan National Institute of Science & Technology (UNIST) Research Interests: Atomic scale investigation
Event Details
Huijun Han
Affiliation: Ulsan National Institute of Science & Technology (UNIST)
Research Interests: Atomic scale investigation on ion-water interaction, Charge-dependent properties of atoms and molecules
Time
All Day (Thursday)
Event Details
Huijun Han Affiliation: Ulsan National Institute of Science & Technology (UNIST) Research Interests: Atomic scale investigation
Event Details
Huijun Han
Affiliation: Ulsan National Institute of Science & Technology (UNIST)
Research Interests: Atomic scale investigation on ion-water interaction, Charge-dependent properties of atoms and molecules
Title: Salt dissolution at atomic scale
Abstract: Ion-water interactions are fundamental to electrochemistry, catalysis, battery, and biology. However, conventional experiments in aqueous solutions at the macroscopic level averages out hydration numbers, structures, and effective charges of ions. Recent studies using scanning tunneling microscopy present an atomic view of the hydration and transport of Na+ ion [1] as well as the specific ion effect on hydration structures [2,3]. Despite these advances, the microscopic understanding of salt dissolution in water–one of the simplest and well-established reactions–has remained elusive due to the statistical ensemble of aqueous solutions. In this talk, I will discuss the atomic-scale investigation on the salt dissolution, by controlling a single water molecule (H2O) at an under-coordinated site of a sodium chloride (NaCl) [4]. Precise manipulation of H2O molecules on NaCl surface provides the insight into ion-water interactions and the surface dynamics of the molecules, which are responsible for the selective dissolution of anions in real space. Our results indicate that the polarizability difference between Na+ and Cl− ions contributes to the bond characteristic and cleavage of the ionic bonds by one H2O molecule. The water dipole attracts an electron cloud of Cl− ion engaging in the ionic bonds, weakening the bond strength and facilitating the dissolution of the Cl− ion. This study provides the microscopic mechanism of the salt dissolution.
Time
(Thursday) 11:00 am - 12:00 pm
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The Center for
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Drawing on director Andreas Heinrich's scientific leadership, our Center has filled its world-class facility with ground-breaking tools and inquisitive minds immersed in a culture of exploration.
We are laying the foundation for future technology by exploring the use of quantum behavior atom by atom on surfaces with highest precision.
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