Computer Mechanics Laboratory 26 th Annual Sponsors Meeting January - PDF document

Computer Mechanics Laboratory 26 th Annual Sponsors’ Meeting January 27 th , 2014 Annual Report and Proposals Sutardja Dai Hall and Etcheverry Hall University of California, Berkeley

Table of Contents Technical Session Program ....................................................................3 Annual Report Overview ....................................................................................7 Industry Membership .................................................................9 Faculty Participants ..................................................................10 Research Facilities ...................................................................11 2013 Publication Review .........................................................12 2013 Graduates ........................................................................14 2014 Research Proposals Proposal Evaluation Forum (tear out and return) ....................15 Research Proposals ..................................................................17 Faculty..................................................................................................37 Students ................................................................................................47 Attendees ............................................................................................77 1

2

Computer Mechanics Laboratory 26 th Annual Sponsors’ Meeting January 27, 2014 University of California, Berkeley Preliminary Program Monday, January 27, 2014 7:30 – 8:00 Coffee and Rolls 8:00 – 8:15 Director David Bogy  WELCOME AND 2013 ANNUAL REPORT Session I Servos and Actuators 8:15 – 9:30 Professor Tomizuka  Feedback shaping of the waterbed effect and transient improvement in Xu (Max) Chen feedforward control allocation  Frequency shaping for performance enhancement of sliding mode control Minghui Zheng for hard disk drives  Wide-band audio vibration suppression using pass band adaptation in Liting Sun disturbance observer  Preliminary study on enhanced decoupled control for dual-stage HDDs Shiying Zhou  2014 RESEARCH PROPOSALS 9:30 – 9:45 Break Session II Servos and Actuators 9:45 – 11:00 Professor Horowitz  Probabilistic Approach for Design of Robust Control with application on Ehsan Keikha HDD  Observer Design for Servo Writers with Non-uniform Sampling of PES Behrooz Shahzavari  H ∞ Control Design for Systems with Periodic Irregular Sampling Using Omid Bagherieh Optimal H2 Reference Controllers  Adaptive Feedforward Repetitive Run-Out Following in Bit Patterned Behrooz Shahzavari Recording (BPR)  2014 RESEARCH PROPOSALS 3

Session III Head/Media Tribology 11:00 – 12:15 Professor Komvopoulos  Deposition of Ultra-thin Amorphous Carbon Films by Filtered Cathodic Jun Xie Vacuum Arc for the Head-Disk Interface  Surface Treatment with a Few Atomic Carbon Layers to Improve the Ehsan Rismani Tribological Properties of Magnetic Hard-Disk Media  Nanomechanical and Nanotribological Properties of Ultra-thin Josef Matlak Amorphous Carbon Films for Magnetic Recording  Peridynamics Analysis of the Wear Process of Thin Films of Hard-Disk Sayna Ebrahimi Drives 2014 RESEARCH PROPOSALS  12:15– 1:15 Lunch catered to Banatao Auditorium (CITRIS Building) Head/Media Tribology Testing and Numerical Session IV Simulation I Professor Bogy 1:15 – 2:30  Lubricant dewetting under the slider's air bearing surface Alejandro Rodriguez  Static and Dynamic Slider Air Bearing Behavior in Heat Assisted Dr. Joanna Dahl Magnetic Recording under Thermal Flying Height Control and Laser System Induced Protrusion  A study on performance of different lubricants in Heat Assisted Soroush Sarabi Magnetic Recording  New features added to GPU Quick code v5.1, introduction to GPU TFC Tholfaqar (Dolf) Mardan code v2.0  2014 RESEARCH PROPOSALS Break 2:30 – 2:45 4

Head/Media Tribology Testing and Numerical Session V Simulation II 2:45 – 4:30 Professor Bogy  Experimental and simulation investigations on TFC slider instability at Yung-Kan Chen disk proximity  Investigation of High-Speed Solid Contact Induced Demagnetization on Yuliang Liu & Yuan Ma Perpendicular Magnetic Recording Discs  Shaomin Xiong & Haoyu Wu Carbon Film and Lubricant Layer Damage under Free Space Laser and NFT Heating Shaomin Xiong  A Two-stage Heating Scheme for Heat Assisted Magnetic Recording  A Rotatory Scanning Plasmonic Nanolithography System for Bit Shaomin Xiong Patterned Media  Operational Shock Failure Mechanisms in Hard Disk Drives Dr. Liping Li  Continuous transition of heat transport across a closing vacuum gap from thermal radiation to thermal conduction Dr. Bair Budaev  2014 RESEARCH PROPOSALS Open Forum Discussion and Industry Feedback ( Banatao 4:30 – 5:00 Auditorium ) Posters session and Buffet reception ( Banatao Auditorium ) 5:00 – 6:30 Advisory Council Meeting FANUC Room – 6 th Floor, Etcheverry Hall 6:00 – 6:30 6:30 – 7:30 Lab Tours and Discussions 9, 5121, 5147, 5149 & 5151 Etcheverry Hall 5

6

Overview The Computer Mechanics Laboratory (CML) of the Department of Mechanical Engineering at the University of California, Berkeley, was formed in January 1989 after several years of close collaborative research between the department's faculty members and the computer industry. Professor David Bogy is the founder and Director of CML. CML funding of faculty participant research topics is decided by the Director with the advice of the Advisory Council. The Advisory Council has both university and industry members. Goals The goals of CML are to conduct research in mechanical aspects of computer technology in close cooperation with - and funded primarily by - the computer industry. The primary objectives are: the education of graduate students in this field, research in topics of direct relevance to the computer industry, and fast transfer of research results to the supporting companies. Funding Industrial member companies provide discretionary funds to support CML's administrative and technical staff, purchase equipment, and fund faculty-directed research. CML also encourages and assists faculty participants in securing overhead- bearing project contracts directly from industrial members. Membership Fees Membership requires an unrestricted annual grant to CML at the following levels: Member $50,000 Advisor Member $75,000 Participant Member $100,000 A company becomes a member by virtue of sending a check with a letter stating that the funds are an unrestricted grant to support the research of CML and by signing the appropriate agreement. 7

Membership Benefits The Member may send five representatives to CML's scheduled technical meetings and receive all CML Technical Reports. The Advisor Member receives the benefits of the Member, but may send ten representatives to the meetings, has a seat on the Advisory Council, may participate in one joint research project of interest to a CML faculty member, and may receive software developed by CML. The Participant Member receives the benefits of the Advisor Member, but may send fifteen representatives to the meetings, and in addition may place a Visiting Industrial Fellow in residence at CML. The membership agreements are for a period of one year. The level of membership can be changed or terminated by either party on a yearly basis. Publications Technical reports are generated as soon as significant research results are obtained. They are published and distributed via the CML website to all members. Two series of reports are published. The Blue Series consists of research technical reports, which are manuscripts of the type submitted to journals. The Gold Series consists of Master's Theses and Doctoral Dissertations issued as soon as they are filed. A list of Blue and Gold Series reports is available on the CML website. Access to the CML website is restricted to CML members and their employees. To request access to the CML website please send an email to info@cml.me.berkeley.edu. Conferences An Annual Sponsor's Meeting is held at CML on the last Monday and Tuesday of January. It includes presentations of research progress primarily by graduate students and faculty participants, as well as a meeting of the Advisory Council. Additionally, laboratory tours and research posters are highlighted. Correspondence Mr. Tholfaqar A. Mardan Computer Mechanics Laboratory Department of Mechanical Engineering University of California 5150 Etcheverry Hall #1740 Berkeley, CA 94720-1740 phone: 510-642-7642 fax: 510-643-9786 email: tmardan@cml.me.berkeley.edu www: http://cml.me.berkeley.edu 8

Current Industry Membership As of the 26 th Annual Sponsors’ Meeting, the following companies comprise the membership of CML: Advisor Members (4): HGST, a Western Digital Company SAE Magnetics Seagate Technology Western Digital Corporation Affiliate Members (1): Hysitron Technologies 9