Browse Definitions :
Definition

atomic force microscopy (AFM)

Atomic force microscopy (AFM) is a technique for analyzing the surface of a rigid material all the way down to the level of the atom . AFM uses a mechanical probe to magnify surface features up to 100,000,000 times, and it produces 3-D images of the surface.

The technique is derived from a related technology, called scanning tunneling microscopy (STM). The difference is that AFM does not require the sample to conduct electricity, whereas STM does. AFM also works in regular room temperatures, while STM requires special temperature and other conditions.

AFM is being used to understand materials problems in many areas, including data storage, telecommunications, biomedicine, chemistry, and aerospace. In data storage, it is helping researchers to "force" a disk to have a higher capacity. Today's magnetic storage devices typically have a capacity limit of between 20 and 50 gigabits (billions of bits) per square inch of storage medium. Researchers are looking into AFM to help raise read and write densities to between 40 gigabits and 300 gigabits per square inch. No one has yet commercialized AFM technology for this purpose, but IBM and others are actively pursuing it.

This was last updated in January 2011

SearchCompliance

  • compliance risk

    Compliance risk is an organization's potential exposure to legal penalties, financial forfeiture and material loss, resulting ...

  • information governance

    Information governance is a holistic approach to managing corporate information by implementing processes, roles, controls and ...

  • enterprise document management (EDM)

    Enterprise document management (EDM) is a strategy for overseeing an organization's paper and electronic documents so they can be...

SearchSecurity

  • IPsec (Internet Protocol Security)

    IPsec (Internet Protocol Security) is a suite of protocols and algorithms for securing data transmitted over the internet or any ...

  • principle of least privilege (POLP)

    The principle of least privilege (POLP) is a concept in computer security that limits users' access rights to only what are ...

  • biometric authentication

    Biometric authentication is a security process that relies on the unique biological characteristics of individuals to verify they...

SearchHealthIT

SearchDisasterRecovery

  • risk mitigation

    Risk mitigation is a strategy to prepare for and lessen the effects of threats faced by a business.

  • call tree

    A call tree is a layered hierarchical communication model that is used to notify specific individuals of an event and coordinate ...

  • Disaster Recovery as a Service (DRaaS)

    Disaster recovery as a service (DRaaS) is the replication and hosting of physical or virtual servers by a third party to provide ...

SearchStorage

  • cloud storage

    Cloud storage is a service model in which data is transmitted and stored on remote storage systems, where it is maintained, ...

  • cloud testing

    Cloud testing is the process of using the cloud computing resources of a third-party service provider to test software ...

  • storage virtualization

    Storage virtualization is the pooling of physical storage from multiple storage devices into what appears to be a single storage ...

Close