XIth ICOPVS - 2026 will be held at Banaras Hindu University, Institute of Science, BHU Main Campus, Varanasi, UP 221005, India during 23-28 February 2026 with Prof. Jürgen Popp as conference chair. On behalf of organizing committee of ICOPVS-2026, we feel pleasure in inviting you to participate actively in this exciting conference. TOPICS COVERED IN ICOPVS 2026 Applications of Vibrational spectroscopy in: Nanomaterials, material Science, Nuclear Science, Life Science, Geoscience, Astronomy, Archaeology, Forensics, Surface Science, Thin films, Catalysis, Solar cells, Energy materials and related areas Disease diagnostics by Vibrational Spectroscopy Fourier Transform based Vibrational spectroscopy Normal, Resonance, and Non-linear Raman spectroscopy Vibrational spectroscopy under extreme conditions Ultrafast Spectroscopy (Vibronic, Raman and IR) Microscopy and Imaging by Raman techniques Terahertz Spectroscopy - Emerging techniques Acoustic Spectrocopy and Microscopy Surface- and Tip- Enhanced Raman Spectroscopy (SERS and TERS) Advances in Instrmentations in Vibrational/Vibronic Spectroscopy Theoretical and Computational methods in Vibrational/Vibronic Spectroscopy