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Through this ICMM space slack account you will be able to navigate the funk, padel, soccer, dance, articles-icmm, scientic-questions channel and many other things such as helping the new icmm-nautas. You can also open your own #channel to find people who share your interests. Join us! Read more



The Instituto de Ciencia de Materiales de Madrid (ICMM) is an institute of the Consejo Superior de Investigaciones Cientificas (CSIC) (Spanish National Research Council) founded in December 1986, that belongs to the Area of Science and Technology of Materials, one of the eight Areas in which the CSIC divides its research activities.


Our mission is to create new fundamental and applied knowledge in materials of high technological impact, their processing and their transfer to the productive sectors at local, national and European scales (the true value of materials is in their use), the training of new professionals, and the dissemination of the scientific knowledge.

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ICMM Congress

Forthcoming Events



Cold Sintering of Functional Materials
IEEE Distinguished Lecture

Clive Randall  read more



Nanoestructuras y Superficies
Nanostructures and Surfaces

  read more

Kerker-Type Intensity-Gradient Force of Light

Xiaohao Xu, M. Nieto-Vesperinas, Cheng-Wei Qiu, Xiaoshuai Liu, Dongliang Gao,Yao Zhang, and Baojun Li

The intensity gradient of light represents the most important property for optical tweezers to manipulate small particles, which is known to produce a conservative optical force that is either attractive or repulsive. Here, it is shown that Kerker interference, the interplay between electric and magnetic dipoles induced in nanoparticles, permits the intensity gradient to exert a nonconservative optical force, in the case of a standard optical trap created with linearly or elliptically polarized Gaussian beams. The Kerker‐type intensity‐gradient force has an “anisotropic” directionality, and it tends to repel particles away from the beam axis. Such repulsive effects can greatly sensitize the particle trapping behavior of optical tweezers to the particle size. Utilizing these peculiar properties, all‐optical sorting of Si nanoparticles is theoretically demonstrated, with tunable size‐selection criterion and accuracy.

Laser Photonics Rev.2020

a) Schematic for different radial (intensity‐gradient) forces on a particle located on the focus plane of a Gaussian beam. b,c) Analytically calculated transverse distribution of the Kerker‐type intensity‐gradient force (violet arrows) and its curl (grey arrows), for a Gaussian beam linearly polarized along the x‐direction.

ICMM-2020 - Sor Juana Inés de la Cruz, 3, Cantoblanco, 28049 Madrid, Spain. Tel: +34 91 334 9000.