CQM - Centro de Química da Madeira

Conteúdo

CQM

 

Member



|

CQM Scanning Electron Microscope (SEM)

The Scanning Electron Microscopy of the Centro de Química da Madeira (CQM, University of Madeira) main objective is to support research at the Centre, being used as a routine tool for surface characterization of samples by researchers of CQM from the following national R&D projects; Post-Doc, PhD and Biochemistry (BSc and MSc) and Nanochemistry and Nanomaterials (MSc) students. Furthermore, the CQM SEM is open to external service (private or other public institutions).


Scanning Electron Microscopy Technique

In the SEM technique, a focused electron beam causes electron emissions that are measured and spatially imaged. It is commonly used in materials, chemistry, and biochemistry for the structural characterization of surfaces; topography and/or quantification of chemical compounds.


Analytical services

  • Secondary electron imaging
  • Backscattered electron imaging
  • Elemental analysis including X-ray mapping
  • Particle counting and sizing
  • Fiber analysis
  • 3D roughness reconstruction
  • Specialized sample preparation


Applications

The possibility of direct observation of structures through scanning electron microscopy allows an important correlation between processing and properties of materials. The study of the nature of material’s surfaces is relevant for natural products, nanomaterials and many scientific disciplines such as medicine, environment, microelectronics, or mechanical engineering because many properties of materials are determined precisely by their surfaces and interfaces.

The SEM is routinely used to generate high-resolution images of object’s shapes and to show spatial variations in chemical compositions.

If you are not affiliated with CQM/UMa and would like to perform SEM characterization, please contact us ( This e-mail address is being protected from spambots. You need JavaScript enabled to view it ) and check the pricing.


SEM equipment

The equipment is installed in CQM/UMa under its strategic funding - Project reference: UID/QUI/00674/2013.

Unit Manager (UM): João Rodrigues

Unit Technician (UT): Carla Miguel


Type of equipment

Bench SEM Microscope Phenom - Pro X

Scanning electron Microscope with qualitative and quantitative analysis of the sample chemical composition by EDS (Energy dispersive X-ray spectroscopy).

EDS specifications

Range of detected elements: from Boron (Z=5) to Americium (Z=95)

Detector:

- Silicon Drift Detector (SDD)
- Cooled by Peltier effect


Lenses

Optical - magnification: 20-135x

Electronic - Magnification: 80-135 000x


Lighting

Optical - LEDs

Electronic - CeB6 thermionic source ("Gun"). Voltage: 5, 10 and 15 KV adjustable from 4.8 KV in steps of 1 KV. Resolution=<10nm at 10 KV.


Detectors of image

Optical

Electronic:

  • BSD (high sensitivity backscattered electrons detector)
  • SED (secondary electron detector)


Accessories

  • Rotary knob
  • Sample holders
    • standard [Máximum sample size: 25mm (Ø) x 30mm (height)]
    • with charge reduction [ Máximum sample size: 25mm (Ø) x 30mm (height)]
    • with temperature control [Máximum sample size: 25mm (Ø) x 5mm (height)]
  • Keypad controller


Software

  • Windows 7 PRO LCP
  • ProSuite image acquisition, processing, and analysis


Infrastructure Requirements

  • Power Supply
  • Pre-Vacuum pump
  • Chiller Unit







- SEM of Centro de Química da Madeira.


Price List

Scanning Electron Microscopy Service

The price of services provided is divided into three classes, namely:

  1. National Centers FCT
  2. Regional and National Public Laboratories
  3. Companies and Laboratories or private Research Centers

The user fees are intended to cover CQM SEM expenses (consumables, parts, maintenance...). Minimum time 1 hour.

Choose the class that are best suited to your case or consult us using the address: This e-mail address is being protected from spambots. You need JavaScript enabled to view it .


Class 1

Class 2

Class 3

Analytical services (€/h)

35

50

90

Specialized sample preparation

5

6

8

(prices: VAT not included)

Submit Sample


Regulation of access and use of the SEM equipment / Users' Rights and Duties

- The right to use the equipment, complying with the established rules, in accordance with the terms approved by the Center;

- The user is responsible for damages and/or malfunctions in the equipment that is affected by it, if not covered by the warranty and insurance;

- The user needs to provide the guarantees, when required, to safeguard the damages and/or faults in the equipment;

-The user should keep the equipment in good working order.


Management of the equipment and organization

Unit Technician (member of the center designated by public tender) - UT

Responsibilities - responsible for equipment management.

  • Make semiannual reports on the functioning of the Unit. Send to UM.
  • Responsible for the preparation of the hours of use of the equipment according to the norms of operation of the center
  • Make recommendations to UM about updating or purchasing material in order to ensure an efficient service.

Unit User - UU

Definition - any researcher, Research or Entity group that requires time to use SEM.

Incumbencies:

  • Complete the sample user/registration form and the equipment logbook in accordance with the Center's operating rules.


General Guidelines

These Guidelines are intended to be fair to everyone that uses CQM SEM equipment and as such must be followed by all.

Users that violate these guidelines will be banned from using the microscope.

 
Copyright © 2017 Centro de Química da Madeira. All Rights Reserved. - FCT ref. CHEM-Madeira-Funchal-674 | Projeto UID/QUI/00674/2013