When it comes to surface science, there’s no room for guesswork. Our instruments don’t just claim accuracy; they’re peer-reviewed and customer-cited (40+ publications) so you can trust every measurement in R&D, QA, and teaching
Smartphone instrument with two calculation methods (Young–Laplace, polynomial); validated on 2,049 synthetic drops and benchmarked against KRÜSS DSA100E for static and dynamic angles.
Automatic contact-point detection; Young–Laplace & polynomial fitting.
Liquid: distilled water.
Substrates: glass, PMMA, PS, Teflon AF, superhydrophobic (span hydrophilic → superhydrophobic range).
Protocol: 50 µL drop; injection/suction 3 µL/s; three measurements per surface; simultaneous imaging of the same drop from perpendicular axes (smartphone + KRÜSS).
Repeatability: synthetic-drop repeats were identical (three per drop).
Accuracy: avg error 0.01% across 2,049 synthetic drops (10°–162°).
Agreement: smartphone ≈ KRÜSS on static and advancing/receding angles across 5 surfaces.
On-phone pendant-drop ADSA (capture + analysis + display). Accuracy 0.001% on 750 synthetic drops; near-identical agreement with KRÜSS across liquids; method independent of phone model.
Pendant-drop ADSA-P on phone; Otsu edge detection; accelerometer-based tilt correction.
Liquids: dodecane, ethylene glycol, distilled water (24 °C).
Needle: 1.83 mm flat tip; injection: 0.1 mL/min.
Replicates: 3 pendant drops per liquid; simultaneous imaging (smartphone ⟂ KRÜSS).
Phones: LG-G4 & Nexus-5.
Repeatability & accuracy: ideal profiles avg error 0.001 ± 0.006% (max 0.141%) over 750 cases; robust to 0.5° tilt and ±5–50 µm edge shifts.
Agreement: smartphone ≈ KRÜSS across all three liquids; ~353 ms / 705 ms analysis times (LG-G4 / Nexus-5).
Doubtful? Curious? Maybe a bit of both. We get it—data > claims. Send us up to five samples and we’ll run measurements using the same validated workflows.