BEGIN:VCALENDAR VERSION:2.0 PRODID:-//Memento EPFL// BEGIN:VEVENT SUMMARY:Nanotribology\, Nanomechanics and Materials Characterization Studi es and Applications to Bio/Nanotechnology and Biomimetics DTSTART:20220623T140000 DTEND:20220623T150000 DTSTAMP:20260504T090608Z UID:0b169a95c06892c3235a128af528385bee37ab797e488b9217da3804 CATEGORIES:Conferences - Seminars DESCRIPTION:Prof. Bharat Bhushan\, Academy Professor\, The Ohio State Univ ersity\, Columbus\, OH (USA)\nBIOENGINEERING SEMINAR\n\n(Talk 1/3 in a mi ni-series: talk 2 taking place on June 24\, talk 3 on June 28\, 2022)\n\nA bstract:\nAt most solid-solid interfaces of technological relevance\, cont act occurs at numerous asperities. A sharp atomic/friction force microscop e (AFM/FFM) tip sliding on a surface simulates just one such contact. Howe ver\, asperities come in all shapes and sizes that can be simulated using tips of different shapes and sizes. AFM/FFM techniques are commonly used f or tribological studies of engineering surfaces at scales ranging from ato mic- to microscales. Studies include surface characterization\, adhesion\, friction\, scratching/wear\, boundary lubrication\, electrical resistance \, surface potential\, and capacitance mapping1-4. AFMs and their modifica tions are also used for nanomechanical characterization\, which includes m easurement and analysis of hardness\, elastic modulus and viscoelastic pro perties\, and in-situ localized deformation studies. The experimental data exhibit scale effects in adhesion\, friction\, wear\, and mechanical prop erties. Generally\, coefficients of friction and wear rates on micro- and nanoscales are smaller\, whereas hardness is greater. Therefore\, micro/na notribological studies may help define the regimes for ultra-low friction and near-zero wear. New lubrication strategies such as the use of self-ass embled monolayers promise to be very versatile and effective at these scal es.\nNanotribology and Nanomechanics of various MEMS/NEMS and BioMEMS/BioN EMS devices which require relative motion is of importance4. The scale of operation and large surface-to-volume ratio of the devices result in very high retarding forces such as friction and adhesion that seriously undermi ne the performance and reliability of the devices. Carbon nanotubes are be ing used for various nanotechnology applications. The mechanical strength and reliability of many of these devices critically relies on the nanotrib ology and nanomechanics of the CNTs5. There are bioadhesion issues in bios ensors and other BioMEMS/BioNEMS which need to be addressed4.\nBiologicall y inspired design\, adaptation\, or derivation from nature is referred to as biomimetics6. The understanding of the functions provided by objects an d processes found in nature can guide us to imitate and produce nanomateri als\, nanodevices\, and processes6-7. \nThese fundamental nanotribologica l studies provide insight to the molecular origins of interfacial phenomen a including adhesion\, friction\, wear\, and lubrication. Friction and wea r of lightly loaded micro/nano components are highly dependent on surface interactions within a few atomic layers. Nanotribological and nanomechanic s studies are also valuable in the fundamental understanding of interfacia l phenomena in macrostructures to provide a bridge between science and eng ineering. This talk will present an overview of nanotribological and nanom echanics studies and their applications to bio/nanotechnology and biomimet ics3\,4\,6.\n\n1 Bhushan\, B.\, Israelachvili\, J. N.\, and Landman\, U.\, “Nanotribology: Friction\, Wear and Lubrication at the Atomic Scale\, ” Nature 374\, 607-616 (1995).  \n2 Bhushan\, B.\, Handbook of Micro/N anotribology\, 2nd ed.\, CRC Press\, 1999.\n3Bhushan\, B.\, Nanotribology and Nanomechanics: An Introduction\, 4th ed.\, Springer\, 2017.\n4 Bhushan \, B.\, Springer Handbook of Nanotechnology\, 4th ed.\, Springer\, 2017.\n 5 Bhushan\, B. “Nanotribology of Carbon Nanotubes”\, J. Phys.: Condens . Matter 20\, 365214 (2008).\n6Bhushan\, B.\, Biomimetics-Inspired Hierarc hical-Structured Surfaces for Green Science and Technology\, 3rd ed.\, Spr inger\, 2018.\n7Bhushan\, B.\, “Lessons from Nature for Green Science an d Technology: An Overview and Superliquiphoboc/philic Surfaces\,” Phil. Trans. R. Soc. A 377\, 20180274 (2019).\n8Bhushan\, B.\, “Frontiers in N anotribology: Magnetic Storage\, Bio/Nanotechnology\, Cosmetics\, and Bioi nspiration\,” J. Colloid Interface Sci. 577\, 127-162 (2020)\n\n\nBio:\n Dr. Bharat Bhushan received an M.S. in mechanical engineering from the Mas sachusetts Institute of Technology in 1971\, an M.S. in mechanics and a Ph .D. in mechanical engineering from the University of Colorado at Boulder i n 1973 and 1976\, respectively\, an MBA from Rensselaer Polytechnic Instit ute at Troy\, NY in 1980\, Doctor Technicae from the University of Trondhe im at Trondheim\, Norway in 1990\, a Doctor of Technical Sciences from the Warsaw University of Technology at Warsaw\, Poland in 1996\, Honorary Doc tor of Science from the National Academy of Sciences at Gomel\, Belarus in 2000\, University of Kragujevac\, Serbia in 2011\, and Honorary Doctorate from University of Tyumen\, Russia. He is a registered professional engin eer. He is presently an Ohio Eminent Scholar and The Howard D. Winbigler P rofessor in the College of Engineering\, Director of the Nanoprobe Laborat ory for Bio- & Nanotechnology and Biomimetics (NLB2)\, and affiliated facu lty in John Glenn College of Public Affairs at the Ohio State University\, Columbus\, Ohio. In 2013-14\, he served as ASME/AAAS Science & Technology Policy Fellow\, House Committee on Science\, Space & Technology\, United States Congress\, Washington\, DC. He has served as Expert Investigator on IP related issues in the U.S. and International Courts. His research inte rests include fundamental studies with a focus on scanning probe technique s in the interdisciplinary areas of bio/nanotribology\, bio/nanomechanics and bio/nanomaterials characterization and applications to bio/nanotechnol ogy\, and biomimetics. He is an internationally recognized expert of bio/n anotribology and bio/nanomechanics using scanning probe microscopy\, and b iomimetics. He is considered by some one of the pioneers of the tribology and mechanics of magnetic storage devices\, nanotribology\, and biomimetic s. He is one of the most prolific authors. He has authored 10 scientific b ooks\, 100+ handbook chapters\, 900+ scientific papers (One of Google Scho lar’s 1494 Highly Cited Researchers in All Fields (h>100)\, h-index - 13 0+ with 80k+ citations\, i10-index - 780+\; Fourth Highly Cited Researcher in Mechanical Eng.\; Web of Science h-index - 98+\; Scopus h-index - 105+ \; ISI Highly Cited Researcher in Materials Science since 2007 and in Biol ogy and Biochemistry\, 2013\; ISI Top 5% Cited Authors for Journals in Che mistry\, 2011\; Clarivate Analytics Highly Cited Researcher in Cross-field Category\, 2018)\, and 60+ technical reports. His research was listed as the Top Ten Science Stories of 2015. He has also edited 50+ books and hold s more than 25 U.S. and foreign patents. He is co-editor of Springer NanoS cience and Technology Series and co-editor of Microsystem Technologies. He has given more than 400 invited presentations on six continents and more than 400 keynote/plenary addresses at major international conferences. He delivered a TEDx 2019 lecture on Lessons from Nature.\n\nYOUR ATTENTION PL EASE: MIND THE LAST-MINUTE CHANGE IN VENUE (seminar moved to BM 5 202 due to an unforeseen collision in SV1717).\n\nZoom link for attending remotely : https://epfl.zoom.us/j/64085517231\n\n  LOCATION:BM 5202 https://plan.epfl.ch/?room==BM%205202 https://epfl.zoom.u s/j/64085517231 STATUS:CONFIRMED END:VEVENT END:VCALENDAR