White Papers

High-Frequency Quartz Crystal Microbalance (HF-QCM) Technology

By: Moshe Shalom; Doron Shalom, MSc; Lev Dayan, PhD; Abraham Shanzer, PhD.

This technical paper provides an overview of the HF-QCM Sensor Technology and its principal of operation. The paper explains the piezoelectric theory where molecules adsorbed on the surface of selective chemical coatings create changes in the mass weight of the HF-QCM Sensors.

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Nanotechnology Detection Sensors For Food Quality and Safety Control

By: Doron Shalom, MSc; Lev Dayan, PhD; Abraham Shanzer, PhD; Shimon Shatzmiller, PhD; Adin Schwimmer, PhD; Joseph Frey, PhD.

This publication explains the novel use and successful integration of nanotechnology-based food sensors holds tremendous benefits in detecting contamination in food quality and safety applications.

The sensors can be used "in-line" and integrated into existing manufacturing lines or as "standalone" in rapid and portable food contamination detectors. There are typically five major categories of use for food sensors:

• Authenticity assessment (quality evaluation of raw materials)
• Freshness evaluation (quality evaluation of raw materials)
• Food and beverage quality control assessment (product consistency)
• Process monitoring (product consistency)
• Shelf-life assessment (quality deterioration of products)

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Sensor Technology For Food and Beverages Control

By: Doron Shalom, MSc; Lev Dayan, PhD; Shimon Shaztmiller, PhD.

This publication examines the innovation in advanced sensors designed for detection and identification of contaminants in food quality and food safety applications. The sensors can be used "in-line" and integrated into existing manufacturing lines or as "stand-alone" in rapid and portable detectors.

The HF-QCM sensors can also be recalled as "Electronic-Nose" and "Electronic-Tongue" and are capable of operating at relatively low-temperatures when necessary, have short calibration and training requirements, fast recovery time between runs and maintenance procedures to maintain low-operating costs.

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