Fast Batch Quantification of the Cellulose-Cellulose Adhesion Using a Cantilevered Microgripper

This paper presents a novel method for the fast batch characterization of the adhesion between the cellulose-cellulose using a cantilevered microgripper (CMG) sensor. This sensor consists of a magnetically controlled microgripper and a force sensing cantilever. It can perform the task of a colloidal probe (CP) by stably gripping a spherical sample. This method not only avoids the complicated preparation process of the CP but also can realize the task of multiple CPs by quickly replacing the gripped micro-sphere. The ability of this sensor to fast measure adhesion is demonstrated by measuring the adhesion between the cellulose spheres (CSs) of different diameters and cellulose membrane (CM). In the experiment, the CMG had achieved a stable gripping on CSs of different diameters, while recording the adhesion between CSs and the CM by atomic force microscopy measurement based on the force-displacement curve. The experimental results show that the adhesion between the CS and the CM is not only related to the size of the CS but also depende on the surface geometry of the CM. The CMG sensor with high-precision, flexibility, and convenience, which can make up for the complexity of the CP preparation and glue pollution in traditional CP technology, makes the measurement process smoother and obtain superior reliability, as well as can improve greatly the measurement speed, thereby saving time and improving efficiency.