Speaker:Che Ting ChanVenue: Lecture Hall 201, Haina Complex Building 4, Zijingang CampusAbstract: Topologically protected boundary states enable unidirectional wave propagation, offering a novel approach for photonic/phononic devices that resist backscattering caused by structural defects or disorder. However, wave propagation in such systems is confined to the boundaries between topologically distinct phases. Since the boundary state channels for energy/signal transmission must be flanked by topological insulator materials characterized by band gaps defined by topological invariants, their effective transmission area is significantly smaller than the overall device area. Consequently, achieving robust unidirectional transmission comes at the cost of spatial efficiency, as the bulk material regions merely function as cladding structures. To overcome this limitation, we attempt to achieve 100% spatial utilization by constructing topological waveguides. Furthermore, we will demonstrate that certain special waveguide networks exhibit unique wave propagation characteristics similar to those of topological photonic crystals, making them practically valuable for exploring topological physics.

Speaker:Prof. Eva OlssonVenue: Lecture Hall, Campus Main Library, Zijingang CampusAbstract: Professor Eva Olsson is a distinguished scholar at Chalmers University of Technology, a member of the Royal Swedish Academy of Sciences, and serves on the Nobel Committee for Physics, representing the pinnacle of scientific achievement in Sweden and beyond. She will introduce her research in physics and materials science, and discuss how research is selected and judged for the Nobel Prize in Physics.

Speaker: Prof. Alan S. GoldmanVenue: Haina Complex Building5-C100, Zijingang CampusAbstract: Professor Alan S. Goldman is a Distinguished Professor at Rutger University's Department of Chemistry. He earned his B.A. from Columbia College in 1980 (advised by Prof. Walter G. Klemperer) and his Ph.D. from Columbia University in 1985 (advised by Prof. David R. Tyler), with a thesis on Mechanistic studies of photoinduced organometallic reactions.After joining Rutgers in 1987, he advanced through the faculty ranks to become a Distinguished Professor in 2005. His research focuses on organometallic chemistry and catalytic science, with publications in top journals like Science, J. Am. Chem. Soc., Acc.Chem.Res., and ACS Catal. He has received notable honors, including the 2023 Honorary Professorship at the Indian Institute of Technology, Guwahati; the 2021 election as a Fellow of the American Association for the Advancement of Science (AAAS); and the 2019 American Chemical Society Award in Organometallic Chemistry.

Speaker: Bo TaoVenue: 2A-203, ZJE Building, Haining CampusAbstract: Understanding the intricate cellular architecture and molecular signaling within complex disease microenvironments remains a major challenge, limited by technological bottlenecks. This talk will introduce a suite of originally developed, multidimensional spatial-omics technologies that break through these barriers. These tools, including Patho-DBiT and epi-Patho-DBiT, are uniquely compatible with clinical FFPE tissue samples, enabling unprecedented analysis of genomics, epigenomics, and proteomics within a preserved spatial context. We have pioneered the application of these methods to perform in-depth dissections of both atherosclerosis and the tumor microenvironment. This presentation will demonstrate how our spatial approach can directly link molecular data to biological function.

Speaker: Nicolas GisinVenue: 4-311, Chengjun CourtAbstract: Physics is traditionally formulated using timeless, axiomatic mathematics, making it challenging to incorporate indeterminism or the concept of creative time into physical theories. An alternative approach, based on intuitionistic mathematics—rooted in time-evolving processes—offers a perspective more aligned with our experience of physical reality. Nearly a century ago, Brouwer, the father of intuitionism, introduced such processes as “choice sequences”. However, Brouwer conceived these evolving sequences as generated by a creating subject, an idealistic notion that is quite foreign to physics. In contrast, we propose a naturalistic interpretation of intuitionism, where choice sequences evolve through a form of creating time. This perspective brings intuitionistic mathematics closer to the frameworks used by physicists, bridging the gap between mathematical formalism and the dynamic nature of physical reality.

Speaker: Georg StengerVenue: 4-311, Chengjun Court, Zijingang CampusAbstract: Es geht in diesem Vortrag um grundlegende Ansätze und Erläuterungen dreier bedeutender Phänomenologen im 20. Jahrhundert. Hierzu werden die wichtigsten Wegstrecken von Husserl – „Transzendentale Phänomenologie“ und „Lebenswelt“, - Heidegger – „ontologisch grundierte Phänomenologie“ und „Seinsgeschichte“, sowie Rombach - „Strukturphänomenologie“ und „Philosophische Hermetik“ aufgezeigt und diskutiert. Dabei erweisen sich die drei philosophischen resp. phänomenologischen Ansätze bis heute als sowohl grundlegend wie inspirierend für das philosophische Selbstverständnis der Gegenwart im globalen Maßstab.

Speaker: Renaud BarbarasVenue: 4-311, Chengjun Court, Zijingang Campus

Speaker: Georg StengerVenue: 4-311, Chengjun Court, Zijingang CampusAbstract: This presentation analyzes the development of phenomenology resulting from its engagement with East Asian thought, with a specific focus on Japanese philosophy. It charts the self-reflexive progression of the discipline from Husserl's 'horizon consciousness' and Heidegger's 'being-in-the-world' to pivotal concepts introduced by thinkers like Nishida ('world turn') and Rombach ('ontological identity' of situations). The core of the analysis demonstrates how this intercultural dialogue fosters a 'new turn' in phenomenology, which pluralizes the 'world' concept and incorporates broader dimensions of 'world experience'—including artistic, religious, ethical, and social domains. This process marks a significant move beyond the discipline's original Western-European provenance and points toward its future intercultural potential.

Speaker: ZHEN XiaoyongVenue: 9-301, Chenjun Court, Zijingang Campus Abstract: This paper examines the causal impact of Berkeley’s sugar-sweetened beverage (SSB) tax on beer purchases and prices using scanner data from 2014–2015. Employing both synthetic control and difference-in-differences (DID) methods, we find that the tax led to an 11% decrease in beer purchases, with no significant change in beer prices. These results are robust across multiple specifications. Medium-run analysis shows that the decline in beer purchases intensified over time, reaching 21.4% by 2019, suggesting habit formation. These results demonstrate that SSB taxes can generate unintended spillover effects on other consumption behaviors with meaningful public health implications.