We studied the autonomous oscillatory processes in liquid dispersion media on the model of instant coffee, with the use of dynamic self-organizing processes in drying drops sitting on a wetted solid substrate. The width of the resulting coffee ring and dynamics of mechanical properties of drying drops, fluctuating throughout the experiment (11 hours), were measured. The analysis showed a high correlation of the dynamics of these indicators. This dynamics reflects the processes taking place in the test liquid medium. A possible mechanism of autonomous oscillations associated with the quasi-periodic processes of aggregation - disaggregation of the colloidal phase and fluctuations in the value of the interfacial tension is discussed. The practical significance of the work lies in the fact that the autonomous fluctuation processes in a liquid dispersion medium should be considered as a natural source of system "measurement error".
disperse environments, the colloidal fluid oscillatory processes, measurement errors
1. Sel'kov E.E. Kolebaniya v biohimicheskih sistemah. Eksperimental'nye dannye, gipotezy, modeli. Tr. Vsesoyuz. simp. po kolebatel'nym proc. v biol. i him. sistemah. Puschino-na-Oke, 21-26 marta 1966 g., red. G.M. Frank, M: Nauka, 1967, s. 7-22. [Selkov E.E. Oscillations in biochemical systems. Experiments, hypothesis, models. Proc. of the SU Symposium on oscillation processes in biological and chemical systems. Puschino-on Oka, March 21-26, 1966, G.M. Frank (Red.), M: Nauka, 1967, pp. 7-22. (In Russ.)]
2. Trudy Vsesoyuznogo simpoziuma po kolebatel'nym processam v biologicheskih i himicheskih sistemah. Puschino-na-Oke, 21-26 marta 1966 g., red. G.M. Frank, M: Nauka, 1967, 425 s. [Proceedings of the Soviet Union Symposium on oscillation processes in biological and chemical systems. Puschino-on Oka, March 21-26, 1966, G.M. Frank (Red.), M: Nauka, 1967, 425 p. (In Russ.)]
3. Shnol' S.E. Konformacionnye kolebaniya makromolekul. Trudy Vsesoyuznogo simpoziuma po kolebatel'nym processam v biologicheskih i himicheskih sistemah. Puschino-na-Oke, 21-26 marta 1966 g., red. G.M. Frank, M: Nauka, 1967, s. 22-41. [Shnol S.E. Conformational oscillations of macromolecules. Proceedings of the Soviet Union Symposium on oscillation processes in biological and chemical systems. Puschino-on Oka, March 21-26, 1966, G.M. Frank (Red.), M: Nauka, 1967, pp. 22-41. (In Russ.)]
4. Chernikov F.R. Kolebaniya intensivnosti svetorasseyaniya v vodnyh rastvorah belkov. Biofizika, 1986, t. 316, № 4, s. 695-699. [Chernikov F.R. Fluctuations in scattered light intensity in aqueous solutions of proteins. Biofizika, 1986, vol. 316, no. 4, pp. 695-699. (In Russ.)]
5. Chernikov F.R. Sverhmedlennye kolebaniya svetorasseyaniya v zhidkostyah raznogo tipa. Biofizika, 1990, t. 35, № 5, s. 711-715. [Chernikov F.R. Superslow fluctuations of light scattering in liquids of different types. Biofizika, 1990, vol. 35, no. 5, pp. 711-715. (In Russ.)]
6. Drozdov A.V., Nagorskaya T.P. Kvazipepiodicheckiy hapaktep mezhmolekulyapnyx vzaimodeyctviy v vode. Biofizika, 2014, t. 59, № 6, s. 1195-1208. [Drozdov A.V., Nagorskaya T.P. Quasiperiodic character of intermolecular interactions in water. Biofizika,, 2014, vol. 59, no. 6, pp.1195-1208. (In Russ.)]
7. Shatalov V.M., Filippov A.E., Noga I.V. Puzyr'kovaya priroda fluktuaciy nekotoryh svoystv vodnyh rastvorov. Biofizika, 2012, t. 57, № 4, s. 565-572. [Shatalov V.M., Filippov A.E., Noga I.V. Bubble nature of fluctuations of certain properties of aqueous solutions. Biofizika, 2012, vol. 57, no. 4, pp. 565-572. (In Russ.)]
8. Deegan R.D., Bakajin O., Dupont T.F. [et al.] Contact line deposits in an evaporating drop. Phys. Rev. E, 2000, vol. 62, pp. 756-765.
9. Yakhno T., Sanin A., Pelyushenko A. [et al.] Uncoated quartz resonator as a universal biosensor. Biosensors and Bioelectronics, 2007, vol. 22, no. 9-10, pp. 2127-2131.
10. Yahno T. Krov' kak polidispersnaya sistema. Lambert Academic Publishing GmbH & Co, Germany, 2011, 313 s. [Yakhno T. Blood as a polydisperse system. Lambert Academic Publishing GmbH & Co, Germany, 2011, 313 p. (In Russ.)]
11. Mischuk N.A. Teoreticheskie problemy ustoychivosti brounovskih dispersnyh sistem. Himiya i tehnologiya vody, 2011, t. 33, № 4, s. 353-366. [Mischuk N.A. Theoretical problems of Brownian stability of disperse systems. Chemistry and technology of water, 2011, vol. 33, no. 4, pp. 353-366. (In Russ.)]
