MW Measurement Techniques

Dielectric properties measurements under microwave heating (IEEE MTT, 2015)

Explore the remarkable advancement in permittivity characterization of materials featured in our paper, “Dynamic measurement of dielectric properties of materials at high temperature during microwave heating in a dual mode cylindrical cavity,” published in July 2015 in IEEE Transactions on Microwave Theory and Techniques.

This paper presents a new system developed at the ITACA-DIMAS laboratory. It consists of a new microwave cavity and heating system for microwave processing and in situ dynamic measurements of the complex permittivity of dielectric materials at high temperatures (around 1000 ºC).

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Dielectric properties measurements under microwave heating (IEEE MTT, 2015)Read More »

Dielectric properties measurements under microwave heating (IEEE MTT, 2015) Read More »

First quantitative microwave calorimeter (Energy, 2023)

We are happy to share our new research describing a novel application of microwave technology in the field of material analysis, “Microwave calorimeter for dielectric and thermal analysis of materials,” published in January 2023 in Energy (Elsevier).

Our article presents a unique method for microwave processing and measurement of dielectric and thermal properties of materials as a function of temperature.

The increasing energy demand has brought the advent of new materials with advanced properties, including the materials that generate, store and transport energy, along with new processing techniques (microwaves, solar energy, etc.). This type of material requires the development of new testing instruments and measurement methods capable of highlighting their unique properties and potential to store energy. …

First quantitative microwave calorimeter (Energy, 2023)Read More »

First quantitative microwave calorimeter (Energy, 2023) Read More »

A stand-alone instrument for permittivity characterization inside tubes (IEEE TIM, 2019)

We are happy to share our new research describing a novel device for material characterization, “A new stand-alone microwave instrument for measuring the complex permittivity of materials at microwave frequencies,” published in September 2019 in IEEE Transactions on Instrumentation and Measurement.

The paper presents a portable, user-friendly, and standalone device for complex permittivity characterization, designed for ease of use by non-specialized personnel and versatility across various scenarios. …

A stand-alone instrument for permittivity characterization inside tubes (IEEE TIM, 2019)Read More »

A stand-alone instrument for permittivity characterization inside tubes (IEEE TIM, 2019) Read More »

Optimizing heating patterns of PET preforms with microwaves (Appl. Therm. Eng, 2022)

Explore our new method for heating PET preforms with microwave energy optimized for the blow moulding process in our latest study, ” Focusing dielectric slabs for the optimization of heating patterns in single mode microwave applicators,” published in November 2021 in Applied Thermal Engineering, Elsevier.

Heating PET preforms is a crucial step in the blow moulding process, which is the predominant technique for producing containers utilized in the packaging, transportation, and storage of beverages. This procedure requires heating a cylindrical PET preform to a flexible state before the blow moulding phase, ensuring that the resulting plastic bottles possess the necessary mechanical properties. In this process, the preform temperature profile is one of the critical parameters for manufacturing a bottle with the desirable mechanical strength.

In this study, a novel approach utilizing adjustable dielectric slabs has been introduced to act as near-field focusing elements inside a single-mode microwave applicator, aiming to modify the temperature profile of PET preforms during microwave heating. …

Optimizing heating patterns of PET preforms with microwaves (Appl. Therm. Eng, 2022)Read More »

Optimizing heating patterns of PET preforms with microwaves (Appl. Therm. Eng, 2022) Read More »

Anti-Counterfeiting Marker Detection via Microwave Microscopy (Sensors, 2021)

We are happy to share our new research describing a novel application of microwave technology in the fight against counterfeiting, “Detection of Anti-Counterfeiting Markers through Permittivity Maps Using a Micrometer Scale near Field Scanning Microwave Microscope“, released in August 2021 at Sensors.

The work introduces an innovative approach to detecting anti-counterfeiting markers on banknotes using a specially designed near-field scanning microwave microscope (NSMM). This portable instrument can measure permittivity maps of heterogeneous paper specimens at the micrometre scale, employing the information of a displacement laser and the cavity perturbation technique. …

Anti-Counterfeiting Marker Detection via Microwave Microscopy (Sensors, 2021)Read More »

Anti-Counterfeiting Marker Detection via Microwave Microscopy (Sensors, 2021) Read More »

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