1.  Formulation of self-administered microneedle patches for influenza vaccines (2008)  IBC Formulation strategies for Protein Therapeutics conference (Anaheim, CA, USA)
   2.  Microneedle patches for improved influenza vaccination (2009) Medical materials and technologies conference (Greenville, SC, USA)
   3.  DNA delivery using coated microneedle patch (2009) IPCC (International Pachyonychia Congenita Consortium) symposium  (Montreal, CANADA)
   4.  Self-administratable influenza vaccination using coated microneedles (2009) Korea Research Institute for Bioscience & Biotechnology (KRIBB, Daejeon, KOREA) Seminar
   5.  Self-administratable influenza vaccination using coated microneedles (2009) Korea Advanced Institute of Science and Technology (KAIST,Daejeon, KOREA) Young Investigator Seminar
   6.  Delivery system design and formulation of microneedles (2010) Short Course, 1st International Conference on Microneedles (Atlanta, GA, USA)
   7.  Transdermal delivery by microneedle (2010) Handok  pharmaceuticals  co.(Seoul, KOREA)   Invited Seminar
   8.  Self-administratable influenza vaccination using coated microneedles (2011) Polymer Society of Korea (Kwangju, KOREA)   Society's Fall Meeting
   9.  Self-administered influenza vaccination using coated microneedles (2011)  Korea Basic Science Institute  (Deajeon, KOREA)  Invited Seminar
 10.  Self-administered influenza vaccination using coated microneedles (2011) Chungnam National University, Department of Biochemistry (Deajeon, KOREA)  Invited Seminar
 11.  Microneedle Patches for Improved Influenza Vaccination (2011)  School of Medicine, Chungnam National University (Deajeon , KOREA)   Invited Seminar
 12.  Microneedle Patches for Improved Influenza Vaccination (2011) Yonsei University, Department of Biotechnology (Seoul, KOREA)   Invited Seminar
 13.  Microneedle Patches for Improved Influenza Vaccination (2011)  Korean Society for Biomaterials (Seould, KOREA) Presentation in Young Scientists Forum of Biomaterial Research
 14.  Microneedle Patches for Improved Influenza Vaccination (2011) College of Veterinary Medicine, Konkuk University (Seoul, KOREA) Invited Seminar
 15.  Microneedle Patches for Improved Influenza Vaccination (2011)  MOGAM Biotechnology Research Institute (Gyeonggi, KOREA)   Invited Seminar
 16.  Microneedle Patches for Improved Influenza Vaccination (2011)  Korea Institute of Science and Technology (KIST, Seoul, KOREA)  Invited Seminar
 17.  Microneedle Patches for Improved Influenza Vaccination (2011)  Department of Electronic Engineering, College of Electronics and Information Engineering, Kwangwoon University (Seoul, KOREA)  Invited Seminar

 18.  Microneedle Patches for Improved Influenza Vaccination (2012) International Vaccine Institute (Seoul, KOREA)  Invited Seminar

 19.  Microneedle Patches for Improved Influenza Vaccination (2012)  Animal, Plant, Fisheries Quarantine and Inspection Agency Seminar (Anyang, Kyungki, KOREA) Invited Seminar
 20.  Microneedle Patches for Improved Influenza Vaccination (2012) College of Medicine, Yonsei University (Seoul, Korea) Invited Seminar 
 21.  Microneedle Patches for Improved Influenza Vaccination (2012) College of BioNano, Gachon University (Sungnam, Kyungki, KOREA) Invited Seminar
 22.  Microneedle Patches for Improved Vaccination (2012)  Korea Institute of Chemical Engineers (KIChE) (Jeju, KOREA) Symposium for Young Scientists
 23.  Microneedle Patches for Improved Influenza Vaccination (2012) Department of Chemical and Biomolecular Engineering, Yonsei University (Seoul, Korea) Invited Seminar 
 24.  Microneedle Patches for Improved Influenza Vaccination (2012) Center for Intelligent NanoBio Materials (CINBM), Department of Chemistry and Nano Science, Ewha Womans University (Seoul, Korea) Invited Seminar 
 25.  Microneedle Patches for Improved Influenza Vaccination (2012)  Korea Controlled Release Society (KCRS) (Jeju, KOREA) Symposium for Young Scientists
 26.  Microneedle Patches for Improved Influenza Vaccination (2012) College of Pharmacy Workshop, Chungnam National University (Deajeon, KOREA)  Invited Seminar
 27.  DNA vaccination against influenza using a coated microneedle patch (2012) Nanosystems in Engineering+Medicine (Songdo, Korea) Invited Presentation
 28. Microneedle Patches for Improved Influenza Vaccination (2012) Department of Bioengineering, Hanyang University (Seoul, KOREA) Invited Seminar
 29. Microneedle Patches for Improved Influenza Vaccination (2013) Department of Chemistry, POSTECH (Pohang, KOREA) Invited Seminar
 30. Microneedle Patches for Improved Influenza Vaccination (2013) The Korean Vaccine Society (KVS) (Seoul, KOREA) Spring meeting, Invited Speaking
 31.  Microneedle Patches for Improved Influenza Vaccination (2013) TheKorea Society for Biotechnology and Bioenineering (Kwangju, KOREA) Spring meeting
 32.  Microneedle Patches for Improved Influenza Vaccination (2013) The Korean Society of Pharmaceutical Sciences and Technology (Seoul, KOREA) Invited Seminar
 33.  Microneedle Patches for Improved Influenza Vaccination (2013) Department of Mechanical Engineering, Yonsei University (Seoul, Korea) Invited Semina
 34. Microneedle Patches for Improved Influenza Vaccination (2013) The Korean Society of Skin Barrier Research (Seoul, Korea) Invited Seminar
 35.  Immunization with influenza DNA vaccine using coated microneedles (2013) Korean Society for Biomaterials (Seoul, KOREA) Invited Speaking
 36. Immunization with influenza DNA vaccine using coated microneedles (2013) Polymer Society of Korea (Changwon, KOREA)   Society's Fall Meeting
 37. Microneedle Patches for Improved Influenza Vaccination (2013) Department of Polymer Nanoscience and Technology, Chonbuk National University (Jeonju, Korea) Invited Semina  
 38. Microneedle Patches for Improved Influenza Vaccination (2013) Department of Chemical and Biomolecular Engineering, Pusan National University (Pusan, Korea) Invited Semina