Microemulsion flushing of petroleum hydrocarbons in porous media: Microfluidic insights into residual oil morphologies and removal mechanisms - Peng Ye; Zhibin Liu; Chenfei He; Haitao Yu; Changsong Zhang; Xueke Zang; Hang Cui; Zhengbing Li; Liangliang Lu; Shiju Cheng; Quanbin Jin (Journal of Environmental Management, 2026)