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We discuss the engineering of the spatial and temporal properties of both the electric permittivity and the refractive index of materials is at the core of photonics. When vanishing to zero, those two variables provide efficient knobs to control light–matter interactions. This Perspective aims at...

The innovative metal-silicide–based coatings, selected for the front cover of Advanced Optical Materials, promise to revolutionize heat management in extreme environments. Image caption: The image illustrates the concept of Thermal Dual-Barrier Coatings (TDBCs), where metal-silicide metamaterials...

Graduate student Farid Kahlor gave a talk on "Quantum Sensing of Photonic Spin Density Using a Single Spin Qubit" at the 2021 OSA Imaging and Applied Optics Congress. You can read more about it in this Arxiv version of the paper.

Researchers have detected the rolling movement of a nano-acoustic wave predicted by the famous physicist and Nobel prize winner Lord Rayleigh in 1885. This phenomenon can find applications in acoustic quantum technologies or in so-called “phononic” components, which are used to control the...

Purdue researchers have made a breakthrough demonstration of controlling energy transfer mediated by vacuum fluctuations. They have proposed and demonstrated a non-reciprocal, diode-like Casimir device. Their results were published in Nature Nanotechnology. A striking prediction of quantum mechanics...

Graphene has been hailed a “wonder material,” given its potential in a growing pool of applications and industries, from quantum computing (also see “Getting edgy with graphene”) to healthcare. But it’s also a bit unassuming. While it’s the thinnest material in the world at just one-atom-thick...

In this talk, the Prof discussed some of the past and ongoing research in the application of machine learning methods to efficiently guide materials design and discovery efforts. The overarching theme is efficient navigation of the vast search space, which is especially critical when brute-force...

Our recent work on 'Heat-assisted detection and ranging' has been published in Nature. We discuss how Machine perception uses advanced sensors to collect information about the surrounding scene for situational awareness . State-of-the-art machine perception using active sonar, radar and LiDAR to...

Our group members, Shoaib Mahmud and Daien He, have been awarded the Bilsland Dissertation Fellowship by Purdue Graduate School. The fellowship is awarded by departments and colleges to PhD students who will enter their final year of their program in 2024. Recipients are expected to devote full-time...

Congratulations to Dr. Xueji Wang and Ziyi Yang for the feature of their recent paper on thermal imaging among the top downloads in Optica for the month of January. In this paper titled "Spinning metasurface stack for spectro-polarimetric thermal imaging", we introduce an approach for spectro...