Using optical tweezers to simultaneously trap, charge, and measure the charge of a microparticle in air
A. Stöllner, I.C. Lenton, A. Volosniev, J. Millen, R. Shibuya, H. Ishii, D. Rak, Z. Alpichshev, G. David, R. Signorell, C.J. Muller, S.R. Waitukaitis, Physical Review Letters 135 (2025).