TY - JOUR PY - 2015 J2 - Mol. Cryst. Liq. Cryst. SN - 1542-1406 T2 - Molecular Crystals and Liquid Crystals VL - 619 IS - 1 DO - 10.1080/15421406.2015.1088761 TI - Observation of Beam Self-Induced Transition from Positive to Negative Optical Refraction in Nematic Liquid Crystals UR - https://www.cheric.org/research/tech/periodicals/view.php?seq=1421524 KW - nematic liquid crystals KW - negative refraction KW - optical solitons KW - nematicons KW - self-steering KW - signal routing AU - Kravets N AU - Piccardi A AU - Alberucci A AU - Buchnev O AU - Assanto G SP - 28 EP - 34 LA - Multi-Language ER -