Extended Data Fig. 3: Cyclability of single (4% Tm3+) pre-ANP to ANP transitions.
From: Infrared nanosensors of piconewton to micronewton forces

a-b. Recurring compression cycles on a single pre-ANP excited at 52 kW cm−2 (a) and 41 kW cm−2 (b). For each cycle, once the particle reaches its maximal emission (at the same force value, within the measurement error), its emission decreases with force following an ANP response to force. Cycle number and fitted graph equations (where P is emission intensity and F is force) for each compression cycle are depicted within the legend. c-d. Excitation power dependent compression cycles for single pre-ANPs at the low-power regime (c) and at the high-power regime (d). Excitation intensities and fitted graph equations (where P is emission intensity and F is force) for each compression cycle are depicted within the legend. For each cycle, once the particle reaches its maximal emission (at the same force value, within the measurement error), its emission decreases with force following an ANP response to force. e. Emission increase force range of compression cycles #9, #10, and #11, of a pre-ANP measured at ~1,800 kW cm−2. a-e. Integration time per unit force was 3 s for all compression cycles.