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Princeton University
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Video
The lecture commenced with a warm welcome and introduction of the speaker by Prof. CHEN Qingyan, Director of PAIR. Prof. McCulloch kickstarted his presentation by giving a brief overview of the current molecular designs of organic semiconductor polymers for charge transport. He explained how they enable organic thin film transistors to achieve high charge carrier mobility and their applications in flexible screens and other electronic devices. He then elaborated on the molecular characteristics of the indacenodithiophene-co-benzothiadiazole copolymer, a semiconductor polymer that exhibits high carrier mobility and is commonly used in organic transistors.
Prof. McCulloch also emphasised the importance of “conformational coplanarity” and “side chain assisted self-assembly”. These features help enhance one-dimensional transport along the “conjugated polymer backbone” and form sterically free “crossing points”, allowing charges to hop between chains. He further highlighted that current research has shown that the molecular conformation and film microstructure are influenced by the design and processing conditions of organic semiconductor polymers, and these significant findings can help achieve optimal charge transport properties.
Following the presentation was a question-and-answer session moderated by Prof. YAN Feng, Associate Director of the Research Institute for Intelligent Wearable Systems (RI-IWEAR) and Chair Professor of Organic Electronics in the Department of Applied Physics. The audience engaged in a productive discussion with Prof. McCulloch.
Event date: 14/01/2025
Speaker: Prof. Iain McCULLOCH (Princeton University)
Hosted by: PolyU Academy for Interdisciplinary Research
- Subjects:
- Chemistry
- Keywords:
- Organic semiconductors Polymers Charge transfer
- Resource Type:
- Video
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e-book
Suppose you want to build a computer network, one that has the potential to grow to global proportions and to support applications as diverse as teleconferencing, video on demand, electronic commerce, distributed computing, and digital libraries. What available technologies would serve as the underlying building blocks, and what kind of software architecture would you design to integrate these building blocks into an effective communication service? Answering this question is the overriding goal of this book—to describe the available building materials and then to show how they can be used to construct a network from the ground up.
- Subjects:
- Computing, Data Science and Artificial Intelligence
- Keywords:
- Textbooks Computer networks
- Resource Type:
- e-book
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MOOC
In this engineering course you will learn how to analyze vaults (long-span roofs) from three perspectives: 1. Efficiency = calculations of forces/stresses 2. Economy = evaluation of societal context and cost 3. Elegance = form/appearance based on engineering principles, not decoration We explore iconic vaults like the Pantheon, but our main focus is on contemporary vaults built after the industrial revolution. The vaults we examine are made of different materials, such as tile, reinforced concrete, steel and glass, and were created by masterful engineers/builders like Rafael Guastavino, Anton Tedesko, Pier Luigi Nervi, Eduardo Torroja, Félix Candela, and Heinz Isler. This course illustrates: - how engineering is a creative discipline and can become art - the influence of the economic and social context in vault design - the interplay between forces and form The course has been created for a general audience—no advanced math or engineering prerequisites are needed. This is the second of three courses on the Art of Structural Engineering, each of which are independent of each other. The course on bridges was launched in 2016, and another course will be developed on buildings/towers.
- Subjects:
- Structural Engineering
- Keywords:
- Roofs Suspension -- Design construction Structural analysis (Engineering)
- Resource Type:
- MOOC
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MOOC
In this engineering course you will learn how to analyze bridges from three perspectives: Efficiency = calculations of forces/stresses Economy = evaluation of societal context and cost Elegance = form/appearance based on engineering principles, not decoration With a focus on some significant bridges built since the industrial revolution, the course illustrates how engineering is a creative discipline and can become art. We also show the influence of the economic and social context in bridge design and the interplay between forces and form.
- Subjects:
- Structural Engineering
- Keywords:
- Structural analysis (Engineering) Bridges -- Design construction
- Resource Type:
- MOOC