We experimentally demonstrate a transverse magnetic (TM) mode laser in photonic crystal (PhC) slab structure at room temperature. This study proposes PhC nanobeam (NB) cavity to support high-quality-factor ($Q$-factor) TM mode. For large and complete band gap, the NB structures consist of air holes thick dielectric slab. The is optimized numerically for high-$Q$-factor over 1 000 by reducing ra...

This study presents a newly developed size-dependent beam-substrate medium model for bending, buckling, and free-vibration analyses of nanobeams resting on elastic substrate media. The Euler-Bernoulli beam theory describes the beam-section kinematics Winkler-foundation represents interaction between its underlying medium. reformulated strain-gradient elasticity possessing three non-classical ma...