So, I'm from the University of Akron.

A little bit history.

So here we are.

Akron, a small city near Cleveland in the state of Ohio.

So for more than 100 years, Akron is the city, the rubber capital of the world, because the

major rubber or tire companies are based on the city of Akron.

So if you don't care about polymers at all, the most likely Akron person you know may

be this guy.

So for Akron, many years they made polymers, rubbers, from the natural rubbers.

So the situation changed when, someday, the war occurred.

During the world war, the natural rubber supply was down.

So if we couldn't get it, we had to make it.

So at that time, United States started the synthetic rubber program, and we treated that

at that time.

Finally, people seriously thought about polymer chemistry and polymer synthesis, how to make

them, how to characterize them.

So the old building was down, of course, too old, but at the same location, that is where

the new building of the Department of Polymer Science.

So today, of course, we care less about rubbers or tires, old science.

However, our scope has been expanded to many fields supported by an extremely large number

of local companies in this field.

So research in polymer at University of Akron is still extremely active.

Okay, so this is about the location, about myself.

I'm also new to this community.

I was trained purely as a scattering guy.

My advisor, Ben Chu, now is already 92 years old, was considered the pioneer of photo correlation

spectroscopy.

Today, it has the name of dynamic light scattering.

So he learned scattering from his mentor, Peter Debye, who regulated the rule for the

static light scattering.

So overall, for many years, I stayed in the comfort zone of scattering techniques, SLS,

DLS, small-angle X-ray scattering, and so on.

Until someday, I realized that all the techniques, along with TEM and ITC, couldn't answer some

of our fundamental questions in polymer physics.

So a few months ago, I bought an AUC Optima.

So that is the first one, I think, in that area, northeast Ohio.

And my students and I have to learn from the very beginning.

So I need to show my appreciation that in a very short period of time, I already received

huge support from many of you from this community.

So today, I would like to introduce some of the basic science we're doing and why we need

AUC and some preliminary results.

So science is like this.

About 20 years ago, I started seeing this question.

We all know this.

Simple ions, colloids, they are different fields.

Simple ions, sodium chloride, sodium ions, chlorine ions.

Colloids, I think people talk about a lot here today.

One of our forces against electrostatic interaction.

So compare them.

Stable and stable, different series, solution versus dispersion.