Xi Wang

Characterization of NbTiN Thin Films for Waveguide-Integrated Superconducting Nanowire Detectors

Aadit Sharma, Lan Hoang, Erika M. Sommer, Nazifa Tasnim Arony et autres

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A deep learning method for drilling condition identification based on data oversampling and automated feature extraction

Xi Wang, Siyang Li, Zhiqiang Li, Feifei Zhang

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Spectral Signatures of Suspended Sediment: Separating Concentration, Particle-Size, and Source Controls on Hyperspectral Radiance Saturation

David Bazzett, S Y Sun, Xi Wang, Ruo‐Qian Wang

Reversible Local Strain Engineering of WS 2 Using a Micromechanical Spring

Eric Herrmann, Zhixiang Huang, Sai Rahul Sitaram, Ke Ma et autres

Local strain engineering is a promising technique to tune the properties of two-dimensional materials at the nanoscale. However, many existing methods are static and limit the systematic exploration of strain-dependent material behavior. Here, we demonstrate dynamic and reversible control of local strain …

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High-quality polycrystalline vanadium dioxide thin films deposited via pulsed laser deposition with high uniformity and consistency

Zhixiang Huang, Sai Rahul Sitaram, Eric Herrmann, S M Jahadun Nobi et autres

Abstract Vanadium dioxide (VO 2 ) is a phase transition material that experiences significant shifts in electrical, optical, and mechanical properties near its transition temperature. Among various methods for depositing VO 2 thin films, pulsed laser deposition (PLD) provides precise stoichiometric control, …

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Zero-standby-power microcantilever switch for hydrogen sensing

S M Jahadun Nobi, Eric Herrmann, Zhixiang Huang, Sai Rahul Sitaram et autres

An event-driven bistable microcantilever switch with Palladium (Pd) as the active sensing layer has been developed for hydrogen detection. The microcantilever functions as a switch based on out-of-plane displacement resulting from strain generated in Pd thin films during the hydrogen adsorption and …

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Zero‐standby power hydrogen sensing using event‐driven micromechanical switches

S M Jahadun Nobi, Eric Herrmann, Zhixiang Huang, Sai Rahul Sitaram et autres

Abstract Zero‐standby power sensors are crucial for enhancing the safety and widespread adoption of hydrogen (H2) technologies in chemical processes and sustainable energy applications, given the flammability of H2 at low concentrations. Here, we report an event‐driven hydrogen sensing system utilizing palladium …

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Prediction of assembly accuracy in multilayer diffractive optical waveguides based on virtual assembly

Feng-guo Li, Peng Yao, Xiang Liu, Kai Liu et autres

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Switchable Terahertz Beam Steering with Near‐Perfect Ordinary Transmission

Zhixiang Huang, Jie Ji, Ke Ma, Eric Herrmann et autres

This study introduces a reconfigurable metasurface that achieves transmission control across a broadband terahertz (THz) frequency range by leveraging the phase transition property of vanadium dioxide (VO2) to enable precise beam steering. Designed with a single‐layer metasurface composed of VO2 split‐ring resonator …

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Design of a High-Isolation 3D Stacked HTCC Package Structure

Lei Zhang, Bin Cheng, Mingyan Jiang, Xi Wang et autres

This paper proposes a design for an ultra-wideband high-isolation three-dimensional (3D) stacked HTCC (High-Temperature Co-fired Ceramic) package structure. By optimizing the metal frame structure of the HTCC package, a gold wire fence has been formed between the top-layer circuit substrate and the …

Tailoring in‐Plane Permittivity Gradients by Shadow Mask Molecular Beam Epitaxy

Shagorika Mukherjee, Sai Rahul Sitaram, Mingyu Yu, Xi Wang et autres

Abstract Infrared (IR) gradient permittivity materials are the potential building blocks of miniature IR‐devices such as an on‐chip spectrometer. The manufacture of materials with permittivities that vary in the horizontal plane is demonstrated using shadow mask molecular beam epitaxy in Si:InAs films. …

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Hybrid Terahertz Emitter for Pulse Shaping and Chirality Control (Advanced Optical Materials 8/2025)

Weipeng Wu, Wilder Acuna, Zhixiang Huang, Xi Wang et autres

Terahertz Engineering Terahertz (THz) technology has applications in many fields. However, the full potential of these applications is often hindered by the need for external THz modulators. The article 2402374, Matthew F. Doty, Joshua M. O. Zide, M. Benjamin Jungfleisch, and co-workers …

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