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Main board of a temperature controll
Electronic amplification stability analysis and improvement
High precision optical temperature sensor
Electronic & PCB design for custom application
Raspberry Pi based remote ECG processing system
Fizeau interferometer for high resolution length measuring
Microscope thermostated stage
Thermostated work surface
5 Channel temp logger
UV 255nm Optical Source
Simple PCB module
“Julian is very experienced freelancer, helped me design what I wanted. He delivers on time, really a great freelancer.”Ilya S. 3 weeks ago
High Pass Filter - Vibration Signal
“Excellent work! Julian has good technical skills and also provided an excellent support for me.”Jose Guilherme B. 1 month ago
Project for Julian A.
“did a good working. will hire him again”Viktoriia K. 1 month ago
Schematic and PCB design On Eagle
“Excellent Freelancer. Highly Recommend to all clients.”Viktoriia K. 1 month ago
Project for Julian A.
“He was fantastic and I really enjoyed working with him. I plan on using him again soon!”Steve B. 2 months ago
Project for Julian A. -- 2
“Julian was very professional and delivered first class work”Gianluca G. 4 months ago
Design engineerApr 2015
Product and electronic design of laboratory thermal instruments.
Research in the Laser laboratory of Physics department. Dedicated to optical fiber based polymer sensors (POF)
University TeachingAug 2008
I have worked in the chairs of Physics I, II and III in addition to the chairs of Electronic Circuits I and II
Electronic Engineer2005 - 2012 (7 years)
Double domain wavelength multiplexed Fizeau interferometer...
In this work, we present a simple photonic instrument that can measure positions, distances and vibrations with the very high resolution using two Fizeau interferometers, both using the same optical fiber end as a probe tip itself. Combination of both sensors results in a new one which allows the correct knowledge of an object or surfaces under test, i.e., a high resolution of displacement data plus its absolute position and the true sense of movement.
Improved spectral resolution in time-varying interferometry
In this work, we present a procedure that allows increasing the resolution of dynamic length measurements made by spectral interferometry. The proposed scheme leads to obtaining a compact photonic instrument with the ability to measure distances, variations on positions and vibrations with a very high resolution. This procedure works by detecting changes in the optical path below those that can be detected by spectral analysis.
Preferred Freelancer Program SLA89%
Analog Electronics Level 187%
US English Level 175%
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