Collaborative Research: Head-Disk Interface for Hard-Disk Drive Areal Data Density of 1 Terabit per Square Inch

合作研究：硬盘驱动器面数据密度为每平方英寸 1 太比特的头盘接口

• 批准号: 0409772
• 负责人: Andreas Polycarpou
• 金额: $ 6万
• 依托单位: University of Illinois at Urbana-Champaign
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2004
• 资助国家: 美国
• 起止时间: 2004-06-15 至 2006-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0409772&HistoricalAwards=false
• 关键词: Collaborative; Research; Head; Disk; Interface

Collaborative Research: Head-Disk Interface for Hard-Disk Drive Areal Data Density of 1 Terabit per Square Inch Andreas A. Polycarpou (UIUC), David B. Bogy (UCB), Frank E. Talke (UCSD)In magnetic recording hard-disk drives the read/write transducer known as head must be very closely separated from the rotating disk that carries the magnetic media in order to achieve extremely high areal data densities. Modern state-of-the art hard-disk drives are capable of storing 80 Gbits per square inch (1 Gbit is 80 billions bits) and it is projected that the magnetic spacing for 1 Tbit (trillion) per square inch will be 5-6 nanometers. The success of magnetic recording to such high areal densities depends on the successful design and implementation of low flying and pseudo-contacting head-disk interfaces. For reliability reasons, such interfaces will also require protective layers of carbon overcoat and lubricant, thus the physical spacing or flying-height will be of the order of only few nanometers. In such ultra-low flying-height regimes, the mechanical integrity and stability of the head-disk interface is a main concern, since high-speed head-disk contact and flying-height modulations are unavoidable. Recent experimental and simulation results support the presence of attractive adhesive forces in ultra-low flying HDIs and the possibility of head-disk interface instabilities occurring when the flying-height is only few nanometers. In this collaborative research the investigator and his colleagues will undertake a systematic study to investigate the head-disk interface instability, develop models to predict it, design head-disk interfaces based on these models, and fabricate then and test them, in collaboration with the Information Storage Industry Consortium and its industrial partners.The impact of this research will be to advance the state-of-the-art of nanotechnology related to magnetic storage hard-disk drives and to enable extremely high recording densities of Tbytes capacities. This will be accomplished by specifically designing, building and testing magnetic heads that will fly over a magnetic disk at only few nanometers distance. Specific technological sectors that will directly benefit are magnetic storage industries and other companies that heavily rely on high areal density data recordings such as information technology, civil infrastructure and others. The broader impacts of this research will be accomplished via integrated research and education programs. The research plan will advance the knowledge of nanotechnology and nanotribomechanics, dynamics and friction, while the education plan will disseminate it outside the research groups and beyond the Universities.

合作研究：硬盘驱动器面数据密度达到每平方英寸 1 太比特的头盘接口 Andreas A. Polycarpou (UIUC)、David B. Bogy (UCB)、Frank E. Talke (UCSD) 在磁记录硬盘驱动器中，称为磁头的读/写传感器必须与承载磁性介质的旋转磁盘非常紧密地分开，才能实现极高的面数据密度。 现代最先进的硬盘驱动器能够存储每平方英寸 80 Gbit（1 Gbit 相当于 800 亿位），预计每平方英寸 1 Tbit（万亿）的磁间距将为 5-6 纳米。 磁记录如此高的面密度的成功取决于低空飞行和伪接触磁头-磁盘接口的成功设计和实现。 出于可靠性原因，此类界面还需要碳涂层和润滑剂的保护层，因此物理间距或飞行高度将仅为几纳米量级。 在这种超低飞行高度状态下，头盘接口的机械完整性和稳定性是主要问题，因为高速头盘接触和飞行高度调制是不可避免的。 最近的实验和模拟结果支持超低飞行 HDI 中存在吸引力粘附力，以及当飞行高度仅为几纳米时可能会出现头盘界面不稳定。 在这项合作研究中，研究人员和他的同事将与信息存储产业联盟及其工业合作伙伴合作，进行一项系统研究，以调查磁头磁盘接口的不稳定性，开发模型来预测它，根据这些模型设计磁头磁盘接口，然后制造和测试它们。这项研究的影响将是推进与磁存储硬盘驱动器相关的纳米技术的最先进水平，并实现极高的记录 TB 容量的密度。 这将通过专门设计、构建和测试磁头来实现，这些磁头将以几纳米的距离飞越磁盘。 将直接受益的具体技术部门是磁存储行业和其他严重依赖高面密度数据记录的公司，例如信息技术、民用基础设施等。 这项研究的更广泛影响将通过综合研究和教育计划来实现。 该研究计划将推进纳米技术和纳米摩擦力学、动力学和摩擦学的知识，而教育计划将在研究小组和大学之外传播这些知识。