Photonic Materials

Photo-responsive Materials

We focus on the development of advanced photonic materials with tailored properties to meet specific application needs. Our research integrates chemistry, physics, and engineering to design materials that respond to photo stimuli, enhance performance, and enable new technologies.

Applications include soft photonic materials, biomedical devices, and sensors. Our team uses cutting-edge synthesis techniques and characterization tools to push the boundaries of material science.

Effect of Photoinitiators Doped in PDMS for Femtosecond-Laser Writing:Characterization and Outcomes

🔬 Research Problem
  • Femtosecond laser writing on PDMS film resulted in surface burning instead of clean patterning.
  • The excessive energy from the laser caused thermal damage, compromising the integrity of the PDMS surface.
  • A reliable method was needed to prevent burning and enable precise laser inscription.
✅ Proposed Solution
  • Photoinitiators were doped into the PDMS matrix.
  • These additives absorbed excess laser energy, reducing thermal stress.
  • Enhanced curing efficiency led to clean, controlled laser writing without surface degradation.
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ACS Omega Article Page

Photosensitization agents for fs laser writing in PDMS

🔬 Research Problem
  • The initial solution using photoinitiators in PDMS showed promise, but optimization was needed.
  • It was unclear how different photoinitiators would affect the optical properties, especially the refractive index of the PDMS matrix.
  • A systematic study was required to evaluate multiple photoinitiators and their impact on laser writing precision and material behavior.
✅ Proposed Solution
  • Several photoinitiators were tested within the PDMS matrix.
  • Their influence on the refractive index was carefully measured and analyzed.
  • The study identified specific photoinitiators that enhanced optical clarity and improved laser inscription quality, paving the way for more refined microfabrication techniques.
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Scientific Reports Article Page

Synthesis and Characterization of Gadolinium-Based Nanocrystals for their Potential Application as Trimodal Imaging Contrast Agents

🔬 Research Problem
  • Lanthanide-doped gadolinium nanomaterials are highly promising for biological imaging, but require precise structural control for optimal performance.
  • Sodium gadolinium fluoride (β-NaGdFâ‚„) is an ideal host for luminescent lanthanide ions, yet its full potential in dual-modality imaging (CT and MRI) needed to be explored.
  • A challenge remained in engineering a multifunctional nanostructure that could combine X-ray absorption, magnetic resonance enhancement, and luminescent properties.
✅ Proposed Solution
  • Developed core-shell nanocrystals: β-NaGdFâ‚„ doped with Yb/Er as the core, coated with β-NaGdFâ‚„ doped with Nd as the shell.
  • The core (Yb/Er) enabled upconversion luminescence, while the shell (Nd) enhanced near-infrared emission and added functionality.
  • Gadolinium’s heavy atomic nature allowed strong X-ray absorption for CT imaging.
  • Its seven unpaired electrons and long electronic relaxation time contributed to MRI contrast enhancement.
  • XRD analysis confirmed the successful synthesis of host, core, and core-shell structures with high crystallinity.
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Contrast Agent Article Page