Lambda News

Spark ablation in gas (SAG) technology has the characteristics of being green, fast quenching, fast dynamics and specializes in producing metallic nanoparticles with a clean surface, small size, and abundant defects. In this study, Ag nanoparticles were prepared via SAG and in situ loaded on a carbon fibre through nitrogen flow. The effect of the carrier gas flow rate and...

Researchers have reported the observation of long-lived Floquet prethermal states in a bulk solid composed of dipolar-coupled 13C nuclei in diamond at room temperature. For precessing nuclear spins prepared in an initial transverse state, we demonstrate pulsed spin-lock Floquet control that prevents their decay over multiple-minute long periods. Researchers observed Floquet prethermal lifetimes 𝑇’2 ≈90.9s, extended >60,000-fold over the nuclear...

Video below shows some hints & tips - even a real-life problem solved by the Check Standard! It’s all well and good performing the calibration even if you are a seasoned user of VNA’s. But it is good practice to check your calibration afterwards. https://www.youtube.com/embed/dlMYyY37TCI To speak with one of our Sales & Applications Engineers please call 01582 764334 or click here to email. Lambda Photometrics...

Introducing basic VNA measurements and considerations when testing RF Devices: How do I test my device if the connectors are different genders or if my RF test leads have different genders? Do I need to add an adapter into my calibration set-up? Can I get around this problem? How about when I’ve made my calibration, can I check that is...

Creating and analyzing signals with Proteus and MATLAB takes a few simple steps. In this application note we show how to generate and receive a WLAN beacon signal at 2.4GHz in the instruments’ first Nyquist Zone. The code can easily be modified to create a signal in the second Nyquist zone, all the way up to the WiFi-6 frequency extension...

BackgroundRADAR (“Radio Detection And Ranging”) is a system that uses electromagnetic waves to identify an object, its direction, relative speed, or even for 2D & 3D imaging. Radars help identify both fixed & moving objects such as aircraft, ships, vehicles, weather formations, and terrain. Radars use transmitters that emit electromagnetic waves that are reflected by a target (“Echoes”) and detected...

Electromagnetic Radiation, RF Pulses and RadarA radar transmitter generates multiple forms of electromagnetic energy. This energy is amplified and transmitted and ultimately is reflected off a target, received and the difference in time and frequency of the transmit signal verses the received signal is used to determine the distance and velocity of a target.Referring to figure 1; a pulse of...

Authors: James Skinner & Nick Ridler, National Physical LaboratoryNils Nazoa, LA Techniques LtdMark Ashcroft, Pico Technology AbstractThese days, many instrument calibrations are performed automatically – for example, using electronic calibration units. This includes calibration of vector network analysers (VNAs) where the calibration standards are generated electronically rather than using mechanical devices. However, verifying performance – particularly accuracy – of these...

This document describes how to implement a Radar Target Simulator/Generator using the Tabor Electronics’ Proteus AWT (Arbitrary Waveform Transceiver). The Proteus AWT RTS system is a configuration of the Proteus AWT that is design to receives a signal from the Radar under test and performs real time calculations in its internal FPGA to simulate a moving target. High level FPGA...

The Ultrafast THz and Optical Spectroscopy Lab at Worcester Polytechnic Institute makes vibration concerns irrelevant with TMC's custom product. CleanTop Optical Table Click here to see how TMC solved this vibration problem. For further information, application support, demo or quotation requests please contact us on 01582 764334 or click here