MAPROMODE

Magnetic Properties of Molecular Deposition: low-temperature MFM and nanocalorimetry of sub-monolayers of magnetic molecules

 Coordinatore AGENCIA ESTATAL CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS 

 Organization address address: CALLE SERRANO 117
city: MADRID
postcode: 28006

contact info
Titolo: Mr.
Nome: Alberto
Cognome: Sereno Alvarez
Email: send email
Telefono: +34 91 5668852
Fax: +34 91 5668913

 Nazionalità Coordinatore Spain [ES]
 Totale costo 168˙896 €
 EC contributo 168˙896 €
 Programma FP7-PEOPLE
Specific programme "People" implementing the Seventh Framework Programme of the European Community for research, technological development and demonstration activities (2007 to 2013)
 Code Call FP7-PEOPLE-2011-IEF
 Funding Scheme MC-IEF
 Anno di inizio 2012
 Periodo (anno-mese-giorno) 2012-04-04   -   2014-04-03

 Partecipanti

# participant  country  role  EC contrib. [€] 
1    AGENCIA ESTATAL CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS

 Organization address address: CALLE SERRANO 117
city: MADRID
postcode: 28006

contact info
Titolo: Mr.
Nome: Alberto
Cognome: Sereno Alvarez
Email: send email
Telefono: +34 91 5668852
Fax: +34 91 5668913

ES (MADRID) coordinator 168˙896.40

Mappa


 Word cloud

Esplora la "nuvola delle parole (Word Cloud) per avere un'idea di massima del progetto.

molchip    scientists    signal    molecules    deposition    refrigerant       chip    materials    cooling    helium    temperatures    bulk    surface    cool    molecule    calorimeters    molecular    temperature    microscopy    grafted    silicon    refrigerants    small    mapromode    deposited    liquid    magnetic       force    nanolithography    mfm    substrate    microrefrigeration    oacute    arag    team   

 Obiettivo del progetto (Objective)

'The controlled aggregation of molecule-based materials in confined geometries has opened a new season in nanomaterials research. The present project is ultimately driven by such a fashionable contest. We propose to experimentally study submonolayers of magnetic molecules, deposited on substrates by chemical methods and dip-pen nanolithography (DPN). The ultimate goal is to detect the magnetic signal from grafted molecules, which are of interest for their potential applications in quantum information processing and magnetic microrefrigeration. We plan to use a magnetic force microscope (MFM), working in the (2.8 – 300) K temperature range and in applied magnetic fields. In addition, we will make use of highly-sensitive sub-1 K calorimeters, whose fabrication by micro- and nanolithography is an objective of the present proposal. The magnetic molecules will be directly grafted on the sensing platform of the calorimeters. The proposed activity will be conducted within the consolidated research group “MolChip” (http://molchip.unizar.es/), by making use of the outstanding scientific facilities available at the Institute of Materials Science of Aragón (ICMA) and the Institute of Nanoscience of Aragón (INA).'

Introduzione (Teaser)

On-chip microrefrigeration devices could soon cool electronics for a major reduction in refrigerant use, cost and system volume. In pioneering work, EU-funded scientists have demonstrated deposition of functional refrigerant molecules on silicon.

Descrizione progetto (Article)

Utilising magnetic molecules, the on-chip microrefrigeration systems could be expected to cool below the temperature of liquid helium, i.e., around 4 Kelvin or -269 degrees Celsius. Cooling of such materials via the magnetocaloric effect is achieved with a small change in applied magnetic field in the order of a few tesla.

Most studies of magnetic molecule-based coolers have been done on bulk materials. Extending the work to molecules deposited on a substrate is quite challenging both due to the low temperatures required and the weak magnetic signal of such small amounts of magnetic material. EU-funded researchers significantly advanced the state of the art for both bulk and substrate-deposited forms in the project MAPROMODE.

Two years of research into the physical characterisation at very low temperatures of certain molecule-based refrigerants in bulk form led to 10 publications in highly esteemed peer-reviewed journals.

In parallel, the team successfully deposited a molecular refrigerant on a silicon substrate. Researchers then characterised the grafted molecular refrigerants using advanced magnetic force microscopy (MFM). MFM is similar to atomic force microscopy (AFM) except it senses the magnetic surface properties through a magnetic force generated between the tip and surface.

Exploiting MFM at near-liquid helium temperature, scientists showed that the molecules maintain their magnetic properties and thus their cooling ability after deposition. The seminal work was published in a paper featured on the journal front cover and heralded in a university press release and the regional and national media. It is the first step toward realisation of cooling microchips on silicon operating at very low temperatures such as required by state of the art X-ray and infrared sensors.

The team continues to investigate ways to reduce the size of the refrigerators to the smallest scales to accommodate high-tech niche markets. The ground-breaking molecule-based microrefrigerator technology developed within MAPROMODE is set to be a hot commodity.

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