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Browsing by Author "Hofkens, Johan"

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    • Morphology control of dynamic optical matter of gold nanoparticles fabricated by optical trapping in printed microchannels 

      Huang, Pin-Hsun; Mu-En, Li; Lu, Chi-Shan; Huang, Chih-Hao; Wu, Hsin-Ni; Tsai, Peng-Chin; Jui-Kai Chen, Jim; Lous, Boris; Bresolí-Obach, Roger; Rocha, Suzana; Hofkens, Johan; Witek, Henryk; Li, Ming-Chia; Masuhara, Hiroshi (Photochemical & Photobiological Sciences 2025, 24, 751–764, 2025-05)
      Optical trapping at interfaces has emerged as a valuable research topic in the study of colloidal particles and soft matter. Objects are drawn from the irradiated cone-like region toward the laser focus, ...

    • NIR Luminescence from Deep-Level Traps in CsPbBr3 Microcrystals 

      Vandenwijngaerden, Jonathan; Pradhan, Bapi; Van Hout, Bob; Fron, Eduard; Araki, Yasuyuki; Zhang, Xianjun; Shibata, Yutaka; Santantonio, Dario; Bresolí-Obach, Roger; Nonell, Santi; Yuan, Haifeng; Xu, Jialiang; Van der Auweraer, Mark; Roeffaers, Maarten; Hofkens, Johan; Fukumura, Hiroshi; Debroye, Elke (The Journal of Physical Chemistry Letters 2025, 16 (14), 2025-04-10)
      In this study, we report the first observation of a near-infrared (NIR) emission band from all-inorganic CsPbBr3 and CsPb(Br/Cl)3 perovskite microcrystals. By means of temperature- and power-dependent ...

    • Surface plasmon resonance effect on laser trapping and swarming of gold nanoparticles at an interface 

      Huang, Chih-Hao; Kudo, Tetsuhiro; Bresolí-Obach, Roger; Hofkens, Johan; Sugiyama, Teruki; Masuhara, Hiroshi (Optical Express 2020, 28 (19), 27727, 2020-09-14)
      Laser trapping at an interface is a unique platform for aligning and assembling nanomaterials outside the focal spot. In our previous studies, Au nanoparticles form a dynamically evolved assembly outside ...