Books and Book Chapters

1. Dmitry Rychkov an Ruy Alberto Pisani Altafim "Polymer Electrets and Ferroelectrets as EAPs: Models" Book chapter in "Electromechanically Active Polymers, Polymers and Polymeric Composites: A Reference Series", Editor: Federico Carpi, pp 1-15, Springer International Publishing Switzerland 2016 , DOI: 10.1007/978-3-319-31767-0_28-1; ISBN: 978-3-319-31767-0 (2016)
2. Xunlin Qiu, Dmitry Rychkov, and Werner Wirges "Properties and Applications of Ferroelectrets" The Nano-Micro Interface: Bridging the Mirco and Nano Worlds, Second Edition Volume 1 (Edited by Marcel Van de Voorde, Matthias Werner, and Hans-Jörg Fecht) (WILEY-VCH, Weinheim, 2015), pp. 271-285; ISBN: 978-3-527-33633-3 (2015)
3. Rychkov D.A., Kuznetsov A.E., Rychkov A.A. “Charge stabilization in polymer electrets” (RGPU Publishing, St-Petersburg, 2013), 159 p., ISBN: 978-5-8064-1938-6 (in Russian, a textbook for Engineering or Physics bachelor/master students)
4. Rychkov A.A., Rychkov D.A., Trifonov S.A. “Polymer dielectrics” (Knijniy Dom Publishing, St-Petersburg, 2005), 156 p. ISBN 5-94777-041-5 (in Russian, a textbook for Engineering or Physics bachelor/master students)

Peer reviewed journal publications

5. K. Abdugafarova, D. Berillo, S. Zulyarov, M. K. Saba, D. Tastanbekov and D. Rychkov, “Solvent-Free Cold Plasma Deposition of PVA-Antibiotic Films: Influence of Process Parameters on Coating Structure and Drug Release”, Polymers (ISSN 2073-4360), 28 April 2026, accepted for publication.
6. A. Guliakova, A. Henderyckx, N. Shishkin, B. Buffel, F. Desplentere and D. Rychkov, "Influence of Crystallinity and Isotacticity on Charge Decay of Polypropylene Homopolymer Blends," in IEEE Transactions on Dielectrics and Electrical Insulation, vol. 31, no. 5, pp. 2358-2364, Oct. 2024, doi: 10.1109/TDEI.2024.3417953.
7. X. Qiu, P. Fang, A. Mellinger, R. A. P Altafim, W. Wirges, G. Gidion, D.Rychkov, “Ferroelectrets: Heterogenous polymer electrets with highpiezoelectric sensitivity for transducers”, Journal of Advanced Dielectrics, 2341009 (2023)
8. X. Qiu, X. Zhang, F. Wang, D. Rychkov, "Guest Editorial: Polymer Electrets and Ferroelectrets" IET Nanodielectrics, 6: 33-35, (2023)
9. R. Altafim, Y. Assagra, R. Altafim, J. Carmo, T. Palitó, A. Santos, D. Rychkov “Piezoelectric-magnetic behavior of ferroelectrets coated with magnetic layer” Applied Physics Letters 119, 241901 (2021)
10. A. Rychkov, A. Kuznetsov, A. Gulyakova, D. Rychkov “Surface Potential Decay of Corona Charged Polyethylene Films: Influence of Deep Surface Traps” IEEE Transactions on Dielectrics and Electrical Insulation 28, 1933-1937 (2021)
11. J. Wang, D. Rychkov, R. Gerhard “Space–charge electret properties of polypropylene films with transcrystalline or spherulitic structures—A comparison of functionalities at interfaces” Journal of Applied Physics 129, 064101 (2021)
12. Y.A.O. Assagra, Altafim, R.A.P., J. do Carmo, R.A.C. Altafim, D. Rychkov, W. Wirges, R. Gerhard “A new route to piezo-polymer transducers: 3D printing of polypropylene ferroelectrets” IEEE Transactions on Dielectrics and Electrical Insulation 27, 1668-1674 (2020)
13. J. Wang, D. Rychkov, Q. Nguyen, R. Gerhard “Unexpected bipolar space-charge polarization across transcrystalline interfaces in polypropylene electret films” Journal of Applied Physics 128, 134103 (2020)
14. J. Wang, D. Rychkov, Q. Nguyen, R. Gerhard “The influence of orthophosphoric-acid surface modification on charge-storage enhancement in polypropylene electrets” Journal of Applied Physics 128, 034102 (2020)                                                                                                                             15. D. Rychkov, R.A.P. Altafim “Template-based fluoroethylenepropylene ferroelectrets with enhanced thermal stability of piezoelectricity” Journal of Applied Physics 124, 174105 (2018)
16. D. Rychkov, R. Gerhard, A. Kuznetsov and A. Rychkov “Influence of Charge Density on the Trap-Energy Spectrum in Fluoroethylenepropylene Copolymer Films with Chemically Modified Surfaces” IEEE Transactions on Dielectrics and Electrical Insulation, 25(3), pp. 840-844 (2018)
17. E Cheilakou, N Tsopelas, A Anastasopoulos, D Kourousis, D Rychkov, R Gerhard, B Frankenstein, A Amditis, Y Damigos, C Bouklas "Strain monitoring system for steel and concrete structures" Procedia Structural Integrity,2018/1/1, 10, 25-32, Elsevier (2018)
18. Konstantinos Loupos, Yannis Damigos, Angelos Amditis, Reimund Gerhard, Dmitry Rychkov, Werner Wirges, Manuel Schulze, Sotiris-Angelos Lenas, Christos Chatziandreoglou, Christina M Malliou, Vassilis Tsaoussidis, Ken Brady, Bernd Frankenstein "Structural health monitoring system for bridges based on skin-like sensor" IOP Conference Series: Materials Science and Engineering 236 (1), 012100 (2017)
19. J. Wang, D. Rychkov, R. Gerhard “Chemical Modication with Orthophosphoric Acid Enhances Surface-ChargeStability on Polypropylene Electrets” Applied Physics Letters, 110(19), 192901 (2017)
20. D. Rychkov, A. Rychkov, N. Efimov, A. Malygin, R. Gerhard "Higher stabilities of positive and negative charge on tetrafluoroethylene-hexafluoropropylene copolymer (FEP) electrets treated with titanium-tetrachloride vapor." Applied Physics A, 112(2), 283-287 (2013)
21. Rychkov D., Kuznetsov A., Rychkov A. “Thermally Stimulated Electret Surface Potential Recovery in Polyethylene Films Modified in Phosphorus Trichloride Vapor” Izvestiya RGPU: Scientific Journal, 157, pp. 113-118 (2013) (in Russian)
22. R.A.P. Altafim, D. Rychkov, W. Wirges, R. Gerhard, H. C. Basso, R.A.C. Altafim, M. Melzer "Laminated tubular-channel ferroelectret systems from low-density polyethylene films and from fluoroethylene-propylene copolymer films-A comparison" IEEE Transactions on Dielectrics and Electrical Insulation 19 (4), 1116-1123 (2012)
23. D. Rychkov, M. Yablokov und A. Rychkov "Chemical and physical surface modification of PTFE films--an approach to produce stable electrets" Applied Physics A, 107, 589–596 (2012)
24. D. Rychkov, R. Gerhard, V. Ivanov, A. Rychkov "Enhanced electret charge stability on polyethylene films treated with titanium-tetrachloride vapor" IEEE Transactions on Dielectrics and Electrical Insulation 19 (4), 1305-1311 (2012)
25. D. Rychkov, R.A.P. Altafim, X. Qiu, and R. Gerhard "Treatment with orthophosphoric acid enhances the thermal stability of the piezoelectricity in low-density polyethylene ferroelectrets" Journal of Applied Physics 111, 124105 (2012)
26. D.N. McCarthy, H. Stoyanov, D. Rychkov, H. Ragusch, M. Melzer, G. Kofod “Increased permittivity nanocomposite dielectrics by controlled interfacial interactions” Composites Science and Technology 72 (6), 731-736 (2012)
27. D. Rychkov and R. Gerhard "Stabilization of positive charge on polytetrafluoroethylene electret films treated with titanium-tetrachloride vapor" Applied Physics Letters 98, 122901 (2011)
28. D. Rychkov, A. Kuznetsov and A. Rychkov "Electret Properties of Polyethylene and Polytetrafluoroethylene Films with Chemically Modified Surface" IEEE Transactions on Dielectrics and Electrical Insulation 18, 8-14 (2011)
29. Rychkov A., Rychkov D. “Mechanisms and models of electret phenomenon in non-polar polymers” Izvestiya RGPU: Scientific Journal, 95, pp. 47-62 (2009) (in Russian)
30. Rychkov A., Rychkov D., Dergachev V. “Homocharge transport in non-polar polymers with a gas-phase modified surface” Izvestiya RGPU: Scientific Journal, 48, pp. 75-82 (2008) (in Russian)

31. Rychkov A., Rychkov D., Trifonov S. “Electret charge stability in film and fibrous polyethylene modified by phosphorus trichloride vapors” Izvestiya RGPU: Scientific Journal, 8(38), pp. 89-97 (2007) (in Russian)
32. Rychkov A.A., Trifonov S.A., Kuznetsov A.E., Sosnov E.A., Rychkov D.A., Malygin A.A. “Influence of Chemical Modification of the Surface of Low-Density Polyethylene on Its Electret Properties” Russian Journal of Applied Chemistry, 80(3), pp. 461-465 (2007)
33. Rychkov A.A., Pak V.N., Kuznetsov A.E., Rychkov D.A., Benberya R.V. “Phenomenon of electret charge stabilization in polytetraflouroethylene films with chemically modified surface” Izvestiya RGPU: Scientific Journal, 7(26) pp.137-142 (2007)(in Russian)
34. Rychkov A.A., Gorokhovatsky Y.A., Rychkov D.A., Kuznetsov A.E. “Electret materials based on non-polar polymers with surface phosphorus-containing nanostructures” Journal of advanced materials, 2, pp. 19-25 (2006) (in Russian)
35. Rychkov A.A., Rychkov D.A. “Energy spectrum determination method for localized states on the surface of charged dielectrics” Izvestiya RGPU: Scientific Journal, 6(15), pp.170-177 (2006) (in Russian)
36. Rychkov A.A., Rychkov D.A., Kuznetsov A.E., Gerashenko Y.S., Kojevnikova N.O., Kujelnaya O.V. “New electret materials based on polymers with modified surface and melt-blown polymers” Izvestiya RGPU: Scientific Journal, 5(13), pp.204-219 (2005) (in Russian)
37. Rychkov A.A., Gorokhovatskiy Y.A., Rychkov D.A., Kuznetsov A.E. “Electret phenomenon in non-polar fluoropolymers with phosphorus-containing nanostructures on the surface” Materials Technologies Instruments, 10(3), pp. 74-78 (2005) (in Russian)
38. Rychkov A.A., Rychkov D.A., Trifonov S.A. “Electret state stability in polymers with modified surface” Izvestiya RGPU: Scientific Journal, 4(8), p.122-134 (2004) (in Russian)
39. Rychkov A.A., Malygin A.A., Trifonov S.A., Rychkov D.A. “Influence of Chemical Modification of the Surface on the Electret Properties of Polytetrafluoroethylene”, Russian Journal of Applied Chemistry, 77(2), pp. 276-280 (2004)
40. Boitzov V.G., Rychkov D.A. “Polymeric electrets in innovative technologies” Izvestiya RGPU: Scientific Journal, 2(4), pp.118-133 (2002) (in Russian)
41. Boitzov V.G., Rychkov D.A. “Novel polymeric materials for electret and piezoelectric transducers” J. Materials. Sci., 12, pp. 46-48 (2001) (in Russian)

Peer reviewed conference publications

42. A. Guliakova, A. Henderyckx, M. Galikhanov and D. Rychkov, " Effect of Processing and Annealing Conditions on Electret Charge Decay for Polypropylene – Poly(ethylene-methyl acrylate) Copolymer Blends," 2026 IEEE 6th International Conference on Dielectrics (ICD), 21st - 25th June 2026, Southampton, United Kingdom, 2026, accepted for publication.
43. G. Rocetti, D. Fabiani and D. Rychkov, " Thermal Stability of Piezoelectricity in Melt-Blown Polypropylene Ferroelectrets," 2026 IEEE 6th International Conference on Dielectrics (ICD), 21st - 25th June 2026, Southampton, United Kingdom, 2026, accepted for publication.
44. D. Rychkov, A. Guliakova, F. Ertl, A. Baderschneider and A. Seeberger, “Charge stabilization in meltblown polypropylene for filter applications” Conf. Proc. 20th International Symposium on Electrets, September 1 – 5, Matsue, Japan, p. 96 (2025)
45. A. Guliakova, A. Henderyckx, P. Fang, F. Desplentere and D. Rychkov, “Electret charge stability of polypropylene homopolymer blends with polar polyethylene copolymers at low comonomer content” Conf. Proc. 20th International Symposium on Electrets, September 1 – 5, Matsue, Japan, p. 132 (2025)

46. A. Henderyckx, A. Guliakova, F. Desplentere and D. Rychkov, “Comparison of electret charge stability for polypropylene electret films with different classes of charge enhancing additives” Conf. Proc. 20th International Symposium on Electrets, September 1 – 5, Matsue, Japan, p. 138 (2025)
47. M-A. Boca, D. Rychkov, “Preliminary Theoretical Research on the Development of a New Plastic Heat Exchanger Concept for Geothermal Heat Pumps,” Proceedings of the 11th World Congress on Mechanical, Chemical, and Material Engineering (MCM'25) Paris, France - August, 2025, Paper No. HTFF 153, DOI: 10.11159/htff25.153.
48. D. Rychkov, A. Guliakova, F. Ertl, A. Baderschneider and A. Seeberger, "Electret Charge Stability in Meltblown Polypropylene Fibers," 2024 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP), Auburn, AL, USA, 2024, pp. 1-4, doi: 10.1109/CEIDP61745.2024.10907715.
49. A. Guliakova, A. Henderyckx, N. Shishkin, B. Buffel, F. Desplentere and D. Rychkov, "Electret Charge Stability and Thermomechanical Properties of Polypropylene Blends with Ethylene-Methyl Acrylate Copolymer," 2024 IEEE 5th International Conference on Dielectrics (ICD), Toulouse, France, 2024, pp. 1-4, doi: 10.1109/ICD59037.2024.10613318.
50. A. Henderyckx, A. Guliakova and D. Rychkov, "Polymer Composition and Film Morphology Affecting Polypropylene Electret Charge Stability," 2024 IEEE 5th International Conference on Dielectrics (ICD), Toulouse, France, 2024, pp. 1-4, doi: 10.1109/ICD59037.2024.10613179.
51. D. Rychkov, F. Corrêa, A. Guliakova “Isothermal charge decay in solid and 3D-printed polypropylene films” Conf. Proc. 19th International Symposium on Electrets, September 18 – 22, Linz, Austria, p. 30 (2023)
52. A. Guliakova, A. Henderyckx, A. Rychkov, N. Shishkin, D. Rychkov “The influence of crystallinity and isotacticity on charge decay in polypropylene blends” Conf. Proc. 19th International Symposium on Electrets, September 18 – 22, Linz, Austria, p. 89 (2023)
53. A. Rychkov, A. Kuznetsov, A. Gulyakova and D. Rychkov, "Electret Properties of Layered Structures Based on Low Density Polyethylene Films," 2022 IEEE 4th International Conference on Dielectrics (ICD), July 3-7, Palermo, Italy pp. 565-568 (2022)
54. A. Rychkov, A. Kuznetsov, A. Gulyakova, D. Rychkov “Surface potential decay of corona charged polyethylene films: Influence of poling time” Conf. Proc.18th International Symposium on Electrets, 24-28 September, Shanghai, China p.51 (2021)
55. D. Rychkov “Controlling Trapping Parameters via Polymer Structure and Composition?” (Keynote) Conf. Proc. of 17th International Symposium on Electrets, September 02-06, Limerick, Ireland, p. 22 (2019)
56. Q. D. Nguyen, J. Wang, D. Rychkov and R. Gerhard, "Depth Profile and Transport of Positive and Negative Charge in Surface (2-D) and Bulk (3-D) Nanocomposite Films," 2019 2nd International Conference on Electrical Materials and Power Equipment (ICEMPE), Guangzhou, China, pp. 298-300 (2019)
57. D. Rychkov, F. He, J. Wang, M. Schulze, G. Gidion, W. Wirges and R. Gerhard “Soft Stretchable All-Silicone Sensor for Transport-Infrastructure Monitoring” Sensoren und Messsysteme 2018 19. ITG-/GMA-Fachtagung, June 26-27, VDE Verlag, Nuremberg, Germany (2018)
58. F. He, J. Wang, D. Rychkov, M. Schulze, W. Wirges and R. Gerhard “Senskin deformable silicone-elastomer sensors for structural health monitoring: assessment of strain sensitivity and correction for thermal expansion” Proc. 8th International conference on Electromechanically Active Polymer (EAP) transducers & artificial muscles, June 05-06, EuroEAP society, Valpré Ecully- Lyon, France (2018)
59. J. Wang, D. Rychkov and R. Gerhard “Influence of Charge Density on Charge Decay in
Chemically Modified Polypropylene Films” Proc. 2nd International conference on dielectrics, July 1-5, Budapest, Hungary, ISBN: 978-1-5386-6389-9 (2018)

60. A. Rychkov, V. Stojharov, A. Kuznetsov and D. Rychkov “The Influence of Recrystallization Regimes on Electret Charge Stability in Low-Density Polyethylene Films” Proc. 2nd International conference on dielectrics, July 1-5, Budapest, Hungary, ISBN: 978-1-5386-6389-9 (2018)
61. D. Rychkov, R. Gerhard, A. Kuznetsov, and A. Rychkov "Trap-energy spectrum in corona-charged polytetrafluoroethylene (PTFE) electret films with modified surfaces" Conf. Proc. of 16th International Symposium on Electrets, September 04-08, Leuven, Belgium, ISBN: 978-90-8649-798-0 (2017)
62. J. Wang, D. Rychkov, and R. Gerhard "Influence of foreign chemical structures from nitric acid treatment on electret and electrical-insulation properties of polypropylene" Conf. Proc. of 16th International Symposium on Electrets, September 04-08, Leuven, Belgium, ISBN: 978-90-8649-798-0 (2017)
63. Q.D. Nguyen, J. Wang, D. Rychkov, and R. Gerhard "Piezoelectrically generated Pressure Steps (PPS) for studying charge distributions on corona-charged Polypropylene (PP) films" Conf. Proc. of 16th International Symposium on Electrets, September 04-08, Leuven, Belgium, ISBN: 978-90-8649-798-0 (2017)
64. W. Wirges, X. Qiu, D. Rychkov, and R. Gerhard "Pressure dependence of the piezoelectric d33 coefficient and the cellular-foam structure in polypropylene ferro- and piezoelectrets" Conf. Proc. of 16th International Symposium on Electrets, September 04-08, Leuven, Belgium, ISBN: 978-90-8649-798-0 (2017)
65. B. Frankenstein K. Loupos, Y. Damigos, A. Amditis, R. Gerhard, D. Rychkov, W. Wirges, M. Schulze, S.A. Lenas, C. Chatziandreoglou, C. M. Malliou, V. Tsaoussidis, K. Brady "Structural health monitoring system for bridges based on skin-like sensor" Building up Efficient and Sustainable Transport Infrastructure 1 Czech Technical University (2017)
66. D. Rychkov, M. Schulze, R. Gerhard "Soft Capacitive Sensors for Structural Health Monitoring" Proc. 14 Int. Conf. “Dielectrics 2017”, St-Petersburg, Russia 29.05-02.06.2017, Herzen University Publishing. , pp: 311-313 (2017)
67. D. Rychkov. R. Gerhard, A. Kuznetsov, and A. Rychkov "Modelling the Isothermal Charge Decay of Modified PTFE Electrets from their Thermally Stimulated Discharge" IEEE, 2016 Annual Report Conference on Electrical Insulation and Dielectric Phenomena., pp: 105-108 (2016)
68. J. Wang, D. Rychkov, and R. Gerhard "Influence of surface modifications with orthophosphoric acid on the charge stability of polypropylene electrets" IEEE, 2016 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, pp: 78-80 (2016)
69. K. Loupos, A. Amditis, A. Tsertou, Y. Damigos, R. Gerhard, D. Rychkov, W. Wirges, V. Kalidromitis, S. Camarinopoulos, S.A. Lenas, V. Tsaoussidisa, Anastasopoulos, K. Lenz, S. Schneider, M. Hill, A. Adesiyun, B. Frankenstein "Skin-like Sensor Enabled Bridge Structural Health Monitoring System" 8th European Workshop On Structural Health Monitoring (EWSHM 2016), 5-8 July 2016, Spain, Bilbao(2016).
70. D. Rychkov, R. Gerhard, A. Kuznetsov, and A. Rychkov "Energy Spectrum of Surface Traps on Teflon-FEP Films Modified with Titanium-Tetrachloride Vapor" International Conference on Dielectrics, Montpellier, France, July 3-7, pp. 169-171 (2016)
71. D. Rychkov, W. Wirges, R. Gerhard, and R. A. P. Altafim "Unipolar Teflon -FEP Ferroelectrets – Choice of Negative Electret Charge Enhances Stability" IEEE, 2015 Annual Report Conference on Electrical Insulation and Dielectric Phenomena., pp: 84-86 (2015)
72. D. Rychkov, R. Gerhard, V. Ivanov, A. Kuznetsov, and A. Rychkov "Rubbing Treatment before Chemical Surface Modification Enhances Deep Trapping of Positive Charge on Polytetrafluoroethylene (PTFE) Electrets" IEEE, 2015 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, pp: 87-89 (2015)                                                                                                                                                  73. D. Rychkov, R.A.P. Altafim, N.Efimov, R. Gerhard " Improved thermal stability of FEP ferroelectrets through inner voids surface modification" Conf. Proc. of XIII Int. conf. "Physics of Dielectrics", St. Petersburg, 2-6 June, v2, pp. 160-162 ; (2014)
74. D. Rychkov, V. Ivanov, A. Rychkov R. Gerhard " Enhanced Stability of Negative Charge on FEP-Copolymer Electrets Treated with TiCl4 Vapor: Voltage-Recovery Experiment" Conf. Proc. of 15th International Symposium on Electrets, August 10-13, Baltimore, MD, USA ; (2014)
75. D. Rychkov,M.G.Z. Khorasani, M. Kollosche, W. Wirges, R. Gerhard "The Influence of Carbon-Nanotube Electrodes on the Charge Decay in Silicone-Elastomer Films for Electro-Electret Applications" Conf. Proc. of 15th International Symposium on Electrets, August 10-13, Baltimore, MD, USA ; (2014)
76. D. Rychkov "Stabilization of Electric Charges on Self-Organized Nano-Islands" Conf. Proc. of 15th International Symposium on Electrets, August 10-13, Baltimore, MD, USA ; (2014)
77. D. Rychkov, R.A.P. Altafim, R. Gerhard "Unipolar ferroelectrets - Following the example of the electret microphone more closely" IEEE, 2014 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, pp: 860-862 (2014)
78. A. Rychkov, A. Kuznetsov, D. Rychkov, V. Ivanov "Thermal stability of negative homocharge in tatrafluoroethylene-hexafluoropropylene copolymer films" Conf. Proc. of XIII Int. conf. "Physics of Dielectrics", St. Petersburg, 2-6 June, v2, pp. 193-195 (2014) (in Russian)
79. D. Rychkov, W. Wirges, R. Gerhard, A. Rychkov, A. Malygin, N. Efimov "Stabilization of Positive Charge on FEP Electret Films Modified with Titanium-Tetrachloride Vapor: Formation of a Two-Dimensional Nanodielectric?" 2013 IEEE International Conference on Solid Dielectrics, Bologna, Italy, June 30 - July 4, pp. 374376 , (2013)
80. Dmitry Rychkov, Werner Wirges, Reimund Gerhard and Andrey Rychkov "Triboelectrification and Thermal Stability of Positive Charge on Polytetrafluoroethylene Electret Films" IEEE, 2012 Annual Report Conference on Electrical Insulation and Dielectric Phenomena, pp: 658-660 (2012)
81. G. Kofod, H. Stoyanov, M. Kollosche, S. Risse, H. Ragusch, D. N. McCarthy, R. Wache, D. Rychkov, and M. Dansachmuller "Molecular level materials design for improvements of actuation properties of dielectric elastomer actuators" Proc. SPIE 7976, 79760J (2011)
82. D.A. Rychkov, A.E. Kuznetsov, A.A. Rychkov, and V.A. Goldade "Electret Properties of Polyethylene Films Modified with Titanium Tetrachloride Vapor" Proceedings: 14th International Symposium on Electrets, (IEEE Service Center, Piscataway, New Jersey, USA 2011), pp: 113-114 (2011)
83. G. Kofod, D. N. McCarthy, H. Stoyanov, M. Kollosche, S. Risse, H. Ragusch, D. Rychkov, M. Dansachmuller, and R. Wache "Materials science on the nano-scale for improvements in actuation properties of dielectric elastomer actuators" Proc. SPIE 7642, 76420J (2010) (2010).
84. D. Rychkov, M. Dansachmüller, H. Ragusch, A. Becker, G. Kofod "Force Relaxation in Charged Dielectric Elastomer Actuators" 2010 International Conference on Solid Dielectrics, Potsdam, Germany, July 4-9, (2010)
85. G. Kofod, H. Stoyanov, M. Kollosche, S. Risse, H. Ragusch, D. Rychkov, M. Dansachmüller, D. McCarthy "Nano-scale Materials Science for Soft Dielectrics: Composites for Dielectric Elastomer Actuators" 2010 International Conference on Solid Dielectrics, Potsdam, Germany, July 4-9, (2010)
86. V. A. Golade, A. A. Rychkov, D. Rychkov "Electret Properties of Polymer Films and Fiber Materials Modified by Phosphorus Trichloride" 2010 International Conference on Solid Dielectrics, Potsdam, Germany, July 4-9, (2010)

87. McCarthy, D. N.; Rychkov, D.; Ragusch, H.; Risse, S.; Melzer, M.; Kofod, G. "Improved Dielectric Elastomer Actuator Materials Based on Ceramic-polymer Nanocomposites" ACTUATOR 10, CONFERENCE PROCEEDINGS, Book Series: Actuator-International Conference and Exhibition on New Actuators and Drive Systems , pp. 448-451 (2010)
88. Kofod, G.; Stoyanov, H.; Risse, S.; Kollosche, M.; Mc Carthy, D. N.; Kraehnert, R.; Ragusch, H.; Rychkov, D. "Improvement of Materials for Dielectric Elastomer Actuators Based on Conducting Particle Composites " ACTUATOR 10, CONFERENCE PROCEEDINGS, Book Series: Actuator-International Conference and Exhibition on New Actuators and Drive Systems , pp: 888-891 (2010)
89. Kuznetsov A.E., Rychkov D.A. “Electret phenomenon in non-polar polymers with element-containing nanokomplexes on the surface “Proc. VI Conf. “Young Scientists-2009”, St-Petersburg, RGPU, pp. 82-87 (2009) (in Russian)
90. D. Rychkov, P. Selyutin, A. Kuznetsov "The stability of electret state in polyethylene films modified with phosphorus trichloride vapor" Conf. Proc. of XI Int. conf. "Physics of Dielectrics", St. Petersburg, 3-7 June, pp. 113-116 (2008) (in Russian)
91. V. Pak, D. Rychkov, S. Trifonov, A. Rychkov "Electret phenomenon in polymers with chemically modified surface" Conf. Proc. of XI Int. conf. "Physics of Dielectrics", St. Petersburg, 3-7 June, pp. 17-20 (2008) (in Russian)
92. D. Rychkov, A. Kuznetsov, P. Selyutin “Electret phenomenon in low density polyethylene films with modified surface” Proc. Intern. Conf. “Fundamental problems of radio-electronic instrument-making”, Moscow, MIREA. v 3, pp. 74-77 (2007) (in Russian)
93. Rychkov A.A., Rychkov D.A. Trifonov S.A. “Electret phenomenon in film and fibrous LDPE modified by phosphorus trichloride vapors” Proc. Intern. Conf. “Fundamental problems of radio-electronic instrument-making”, Moscow, MIREA, v 3, pp. 7-13 (2006) (in Russian)
94. Rychkov D.A., Kuznetsov A.E., Rychkov A.A., Petrova A.A. “Energy spectrum of surface states in LDPE films modified with PCl3 vapours” Proc. 3 Intern. Conf. “Surface Chemistry and Nanotechnology”, St-Petersburg, p. 26 (2006) (in Russian)
95. Rychkov A.A., Rychkov D.A., Trifonov S.A., Dergachev V.F. “Electret charge stabilization in polymer films with element-containing nanostructures on the surface” Proc. 3 Intern. Conf. “Surface Chemistry and Nanotechnology”, St-Petersburg, p. 52-53 (2006) (in Russian)
96. Kuznetsov A.E., Rychkov D.A., Benberya R.V. “Electret phenomenon in polymers with modified surface” Proc. Intern. Conf. “Young Scientists-2006”, Moscow, MIREA, p. 23-27.(2006) (in Russian)
97. Rychkov A.A., Gorokhovatskiy Y.A., Rychkov D.A., Kuznetsov A.E. “Electret phenomenon in non-polar fluoropolymers with phosphorus-containing nanostructures on the surface” Proc.Int.Conf. “Polycomtrib-2005”, Gomel, p.45 (2005) (in Russian)
98. Rychkov D.A., Kuznetsov A.E., Rychkov A.A. “Corona-charged electrets from phosphorus chloride vapor modified non-polar polymers” Proc. Intern. Conf. "Thin films and nanostructures", Moscow, pp. 7-11. (2005)(in Russian)
99. Rychkov D.A. “Electret phenomenon in tetrafluoroethylene-hexafluoropropylene copolymer with nanostructures built into the surface” Proc. Intern. Conf. “Young Scientists-2005”, Moscow, MIREA, pp. 68-71 (2005)(in Russian)
100. Kuznetsov A.E., Rychkov D.A., Rychkov A.A. “Homocharge stability in low density polyethylene film electrets with surface phosphorus-containing nanostructures” Proc. Intern. Conf. “Young Scientists-2005”, Moscow, MIREA, pp. 112-116 (2005) (in Russian)
101. Rychkov A.A., Rychkov D.A., Trifonov S.A. “Electret properties of polytetrafluoroethylene with element-containing nanostructures on the surface” Proc. Intern. Conf. "Dielectrics-2004", St-Petersburg, pp. 308-311 (2004) (in Russian)

102. Gorokhovatsky Y.A., Rychkov D.A., Chepurnaya N.A., Rychkov A.A. “Electret phenomenon in polar partially crystalline polymers” Proc. Intern. Conf. "Dielectrics-2004", St-Petersburg, pp. 283-285 (2004) (in Russian)
103. Rychkov A.A., Rychkov D.A., Kuznetsov A.E. “The stability of polymer electrets with surface nanostructures in severe climatic conditions” Proc. Intern. Conf. "Thin films and nanostructures", Moscow, pp. 91-94 (2004) (in Russian)
104. Rychkov A.A., Rychkov D.A. “Microscopic parameters of electret charge traps in polymers with element-containing nanostructures on the surface” Proc. Intern. Conf. "Thin films and nanostructures", Moscow, pp. 7-11 (2004) (in Russian)
105. Rychkov A.A., Gorokhovatsky Y.A., Rychkov D.A. “Method for Determination of Polarization Decay in Polarized Polymer Films” Proc. Intern. Conf. “ICPADM-03”, Nagoya, Japan, pp. 805-807 (2003)
106. Boitzov V.G., Rychkov D.A., Rychkov A.A. “Test techniques for diagnostics of polar partially crystalline polymers” Proc. Intern. Conf. "INTERMATIC-2003", Moscow, pp. 349-351 (2003) (in Russian)
107. Rychkov D.A., Rychkov A.A. “The effect of injected charges on dielectric properties of copolymer of vinylidenefluoride with hexafluoropropylene” Proc. Intern. Conf. "INTERMATIC-2003", Moscow, pp. 41-43 (2003) (in Russian)
108. Rychkov A.A., Rychkov D.A., Dergachev V.F. “Fluoropolymers surface modification in technologies of thermally stable electret production” Proc. Intern. Conf. "INTERMATIC-2003", Moscow, pp. 44-48 (2003) (in Russian)
109. Rychkov A.A., Trifonov S.A., Malygin A.A., Rychkov D.A. “The nature of electret charge traps in polymers with element-containing nanostructures on the surface” Proc. Intern. Conf. "INTERMATIC-2003", Moscow, pp. 11-13 (2003) (in Russian)
110. Rychkov D.A., Rychkov A.A. “Excess charge and polarization interaction in electret structures P(VDF-HFP)-Al” Proc. Intern. Conf. “Polymeric materials-2003”, Moscow, MIREA, pp. 74-76 (2003) (in Russian)
111. Rychkov A.A., Rychkov D.A. “Electret state formation and relaxation in polymers” Proc. Intern. Conf. “Polymeric materials-2003”, Moscow, MIREA, pp. 7-11 (2003) (in Russian)
112. Rychkov A.A., Rychkov D.A. “Isothermal surface potential decay in polymer-metal structures” Proc. Intern. Conf. “Polymeric materials-2003”, Moscow, MIREA, pp. 12-15 (2003) (in Russian)
113. Rychkov D.A., Gorokhovatsky Y.A. “Polarization relaxation kinetics determination by thermally stimulated surface voltage recovery method” Proc. Intern. Conf. Physics of semiconductors, St-Petersburg, pp. 213-215 (2002) (in Russian)
114. Rychkov D.A. “The effect of corona discharge treatment on thermal stability of copolymer of vinylidenefluoride with hexafluoropropylene film electrets” Proc. Intern. Conf. “Surface Chemistry and Nanotechnology”, St-Petersburg, pp. 212-214 (2002) (in Russian)
115. Gorokhovatsky Y.A., Rychkov D.A., Semikhin Y.A. “Determination of frequency factor and activation energy distributions in copolymer of vinylidenefluoride with hexafluoropropylene” Proc. Intern. Conf. “Young Scientists-2002”, Moscow, MIREA, pp. 64-66 (2002) (in Russian)
116. Rychkov D.A. “Modeling of isothermal potential decay in polar polymer electrets” Proc. Intern. Conf. “Young Scientists-2002”, Moscow, MIREA, pp. 67-71 (2002) (in Russian)
117. Rychkov A.A., Rychkov D.A. “Modeling of thermally stimulated surface potential relaxation in film structures containing polar dielectric” Proc. Intern. Conf. “Films-2002”, Moscow, MIREA, p. 24-29 (2002) (in Russian)
118. Trifonov S.A., Rychkov D.A., Dergachev V.F. “Relaxation properties of polymers with surface modified with molecular layer formation technique” Proc. Intern. Conf. “Films-2002”, Moscow, MIREA, pp. 62-64 (2002) (in Russian)

119. Boitsov V.G., Rychkov D.A. “Technological features of industrial electrets and electret microphones production” Proc. Intern. Conf. “Films-2002”, Moscow, MIREA, pp. 309-311 (2002) (in Russian)
120. Gorokhovatsky Y., Boitzov V., Rychkov D. “Thermal stability of polarization structures in corona-charged P(VDF-HFP) copolymers films” Proc. 11th. Intern. Symp. Electrets (ISE-11), Melbourne, pp. 134-137 (2002)
121. Boitzov V.G., Rychkov D.A. “Electret phenomenon in copolymer of vinylidenefluoride with hexafluoropropylene” Proc. Intern. Conf. “Polymeric Materials-2001”, Мoscow, MIREA, pp. 86-88 (2001) (in Russian)
122. Rychkov D.A., Boitzov V.G. “Voltage recovery kinetics in electret structures (P(VDF-HFP)) after short-circuiting” Proc. Intern. Conf. “Polymeric Materials-2001”, Мoscow, MIREA, pp. 83-85 (2001) (in Russian)
123. Rychkov D.A. “Measuring complex for investigation of electret state in polar polymers” Proc. Intern. Conf. “Dielectrics-2000”, St-Petersburg, pp. 89-90 (2000) (in Russian)

Patents

124. “Electromechanical transducer device for use in e.g. actuator device, has electret material having predetermined electrical charge, which is provided between electro-active layers” Patent Number(s): EP2705549-B1, Patent Assignee: JENNINGER M, Inventor(s): GERHARD R; RYCHKOV D; WIRGES W; et al.
125. “Method of film electret production involves application of fluoropolymer layer onto metal electrode” Patent Number(s): RU2528618-C1, Patent Assignee: UNIV RUSSIAN PEDAGOGICAL, Inventor(s): EFIMOV N YU; JULENETS YU P; KUZNETSOV A E; et al.
126. “Method of film electret production, involves application of fluoropolymer layer onto metal electrode and discrete layer consisting of isolated nano-sized aggregates out of titan-containing nanostructures onto fluoropolymer surface” Patent Number(s): RU2012157405-A, Patent Assignee: UNIV RUSSIAN PEDAGOCICAL GERTSEN, Inventor(s): EFIMOV N YU; IVANOV V A; KUZNETSOV A E; et al.
127. “Method of film electret production, involves applying fluoropolymer layer on metal electrode surface with electreting and applying discrete layer on fluoropolymer surface with nanosized aggregates of titan-containing nanostructures” Patent Number(s): RU2011114060-A, Patent Assignee: UNIV RUSSIAN PEDAGOCICAL, Inventor(s): RYCHKOV A A; RYCHKOV D A; DERGACHEV V F; et al.

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