TY - JOUR AU - Rebecca Montange AU - Matthew Bull AU - Elisabeth Shanblatt AU - Thomas Perkins BT - Optics Express DA - 2013-01 DO - 10.1364/OE.21.000039 PY - 2013 EP - 39 T2 - Optics Express TI - Optimizing bead size reduces errors in force measurements in optical traps VL - 21 ER -