MXene functionalized whispering gallery mode microbubble resonator for Pb2+ sensing

Key Points

• Enhanced sensing performance for Pb2+ ions was observed with MXene functionalized microbubble resonators.
• A detection limit as low as 1 nM was achieved, highlighting the effectiveness of this approach.
• The assessment employed whispering gallery mode technology, which is key to improving sensitivity.
• This method may enable faster and more accurate environmental monitoring of heavy metals in water.