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The conventional idea of experimental physical chemistry has been to interrogate molecules under well-defined, usually pristine conditions. An interesting direction to advance experimental physical chemistry is to be able to study chemical dynamics in situ—complex systems that are highly heterogeneous both in space and time. The active feedback-based 3D single-particle μs tracking technique was developed in order to achieve this overarching goal.

Explore physics and quantum-related research throug

CU Chemistry Professor Wei Zhang and his team consisting of chemistry, mechanical engineering and industry (RockyTech) collaborators will present an all new show that highlights the past, present and future of plastics. During this show students will learn more about pros and cons of plastics in our daily life, as well as the innovation that fosters sustainability and recyclability of plastics!

Time-domain astronomy is entering a new era. With JWST, we can now discover and study supernovae in the early universe, while the Rubin Observatory and the Nancy Grace Roman Space Telescope will find rare transients across wide areas and in unprecedented numbers. These complementary facilities are transforming the transient sky into a laboratory for precision astrophysics and cosmology. In this talk, I will show how these observations are opening new ways to study cosmic expansion and probe the physics of the early universe.

Cloud microphysics—the processes governing droplets, ice, and aerosols at microscopic scales—remains a leading source of uncertainty in weather and climate predictions. These processes shape cloud structure, precipitation, and radiative feedbacks, yet they are neither resolvable in large-scale models nor directly constrained by most observing systems. Bridging the scale gap between observations, microphysical processes, and predictive models is a central challenge in atmospheric science.

As exoplanet science moves towards bigger, noisier datasets, smaller signals, and more complicated physical models, statistical inference is becoming more and more essential.

The first year of a Ph.D.

This century is witnessing a second quantum revolution, and quantum sensing represents an area in which chemists can make significant contributions. Achieving quantum sensing requires more than precise control of quantum states at the molecular level; it is also crucial to organize molecular qubits so that they function effectively in complex environments. In this seminar, I will discuss materials chemistry approaches to molecular quantum sensors, focusing on their extension from biological systems to engineered materials.

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The Will Lab studies quantum systems of ultracold atoms and molecules. The lab cools atoms and molecules to temperatures less than a millionth of a degree above absolute zero, where atomic behavior is fully governed by quantum mechanics. Under these conditions, the lab controls individual quantum particles and their interactions with high precision using atomic physics tools, enabling novel platforms for many-body quantum physics, quantum simulation, quantum computing, and quantum optics.

We will have ~125 high school students from 4 different schools presenting projects they have completed this semester under the guidance of PISEC mentors. In addition to the poster session, we will offer lab tours for the students (12:15-1:15pm). This visit to CU and JILA will be an impactful experience for these students as they explore their interests and opportunities in STEM.

Condensed matter physics aims to explore and underst

I will discuss the standards of time and frequency and how these standards have evolved over the centuries. I will present the current definitions of time and frequency and how these definitions are likely to evolve in the coming years.

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