Terahertz Applications Group Cambridge
Terahertz Applications Group Cambridge
  • Видео 17
  • Просмотров 38 973
Research in the Terahertz Applications Group
As part of the internal CEB@11 series that has started in the Department of Chemical Engineering and Biotechnology during the pandemic to explain our research activities to our colleagues, Professor Axel Zeitler gives a short overview of recent research interests in his group for a non-specialist audience.
Просмотров: 763

Видео

OVSI Ventilator Update and Open Source Release
Просмотров 813 года назад
Presentation by the group of first year students from the EPSRC CDT in Sensor Technologies for a Healthy and Sustainable Future (cdt.sensors.cam.ac.uk) who worked over the summer to improve the design of the OVSI ventilator (www.ovsi.org) and get the documentation ready for the public release on Gitlab. The students describe the present state of the development and future perspectives for the v...
Understanding the metastability of theophylline form III by low-frequency vibrational spectroscopy
Просмотров 1553 года назад
Final year PhD student Qi Li provides a summery of recent research in collaboration with colleagues in Brazil on how to use terahertz spectroscopy, low frequency Raman spectroscopy and computational methods to better understand the fascinating solid state chemistry of the organic molecular crystal of theophylline and its hydrate form. While theophylline has been extensively studied with multipl...
Crystallographic disorder in polymorphs of aspirin analysed by low-frequency vibrational analysis
Просмотров 1253 года назад
Qi Li, a forth year PhD student from the group, is presenting some as yet unpublished results on using terahertz spectroscopy and solid state computational analysis into better understanding the fundaments behind the structures that the small organic drug molecule aspirin can form when it crystallises and how the molecular structure, its flexibility and the motion of the molecules relative to o...
Visualising liquid transport through coated pharmaceutical tablets using terahertz pulsed imaging
Просмотров 5463 года назад
Runqiao Dong, a third year PhD student from the group, is presenting the first results of what happens to the film coating that is on most pharmaceutical tablets when it gets in contact with water and how the coating layer affects how the tablet subsequently breaks apart compared to uncoated tablets. Based on his abstract the talk was selected as a keynote presentation at the 46th International...
In-situ Observation of the Structure of Crystallising Magnesium Sulfate by Terahertz Spectroscopy
Просмотров 3453 года назад
Qi Li, a forth year PhD student from the group, is presenting the first results of our recent work into the crystallisation process from an aqueous solution in a temperature controlled transmission liquid cell. Qi has developed these measurements with fellow PhD student Johanna Kölbel and we designed the experiments in collaboration with Dr Terry Threlfall from the University of Southampton. Th...
How does the tableting process affect the quality of pharmaceutical tablets?
Просмотров 8383 года назад
Presentation by Dr Prince Bawuah at the IFPAC 2021 virtual meeting (www.ifpacglobal.org/). Insight into the impact of process variations in tablet processing on tablet disintegration by non-destructive at-line terahertz porosity sensing Tablet porosity is a fundamental quality attribute which controls key mass transport mechanisms that govern disintegration behaviour and ultimately drug release...
Investigating liquid transport kinetics of ceramic powder compacts using terahertz pulsed imaging
Просмотров 5713 года назад
Mohammed Al-Sharabi, a forth year PhD student from the group, is presenting a short summery of his research work which was just published as a research paper in the journal Chemical Engineering Research and Design. Mohammed designed and commissioned a new liquid flow cell for terahertz imaging for this work. This new cell allowed him to make highly accurate and reproducible measurements of a la...
Conformational jamming of protein molecules in the solid state measured by terahertz dynamics
Просмотров 9044 года назад
Johanna Kölbel, a third year PhD student from the group, is presenting a talk for the 45th International Conference on Infrared, Millimeter, and Terahertz Waves - a virtual event this year due to the coronavirus pandemic. She shows how terahertz spectroscopy can be used as a new tool to optimise the protein stability in biopharmaceutical formulations. Johanna is a student with the EPSRC Sensor ...
Making a difference during the COVID-19 pandemic
Просмотров 1904 года назад
Developing chemical engineering and biotechnology technologies - the department’s core strength of translating ideas from concept to exploitation is helping address global challenges, in particular in low- and middle-income countries Speakers: Professor Axel Zeitler, Dr David Fairen-Jimenez, Dr Jenny Molloy, Dr Lara Allen and Professor Lisa Hall CBE This is the recording of an event part of the...
Introduction to Terahertz Spectroscopy of Amorphous Molecular Materials
Просмотров 16 тыс.4 года назад
In this video Professor Axel Zeitler gives a tutorial on the basic principles of using terahertz time-domain spectroscopy (THz-TDS) to explore the materials properties of organic molecular materials in their disordered, amorphous state. The talk outlines the link between the spectra of organic molecular crystals, which exhibit sharp vibrational modes in the far-infrared at terahertz frequencies...
Tour of the CEB video recording studio
Просмотров 4814 года назад
To prepare for our lectures and outreach activities through remote teaching and blended learning in the coming year during the coronavirus pandemic we have setup a studio video recording space in our department to record lectures. The studio is open for anybody within the Department of Chemical Engineering and Biotechnology and can be booked through the Booker website (booker.eventmapsolutions....
Launch of the Cambridge Open Ventilator System Initiative (OVSI)
Просмотров 2 тыс.4 года назад
Engineers and scientists at the University of Cambridge together with partners in academia and industry across the UK and Africa (www.ovsi.org) have developed an open source, robust, easy to manufacture ventilator that can be made by in-country engineering companies around the world. This design is specifically aimed to help lower and middle income countries (LMIC). We are responding effectivel...
TeraSolve - a new tool to measure tablet porosity and predict dissolution using THz spectroscopy
Просмотров 1,3 тыс.4 года назад
Together with TeraView (teraview.com/), Huxley Bertram (huxleybertram.com/) and Daniel Markl from the University of Strathclyde we have developed a completely new terahertz spectroscopy sensor that can be used for at-line measurements for the development and quality testing of immediate release tablets in the pharmaceutical industry. The instrument is capable of measuring the total porosity of ...
Non-destructive Porosity Testing Method for Pharmaceutical Tablets Based on Terahertz Spectroscopy
Просмотров 1,3 тыс.5 лет назад
Non-destructive Porosity Testing Method for Pharmaceutical Tablets Based on Terahertz Spectroscopy
Terahertz Applications Group at The University of Cambridge
Просмотров 11 тыс.6 лет назад
Terahertz Applications Group at The University of Cambridge

Комментарии

  • @mikesanders8621
    @mikesanders8621 3 месяца назад

    I have no idea what any of this meant, but I certainly feel more brainier now that I've seen it.

  • @tobiaswolfelsperger
    @tobiaswolfelsperger 9 месяцев назад

    Could two electrolysis units mechanically connected generate a vacuum, with one of them producing a vacuum for stabilizing a plasma field in conjunction with piezoelectric charge reversals? If these electrolysis units have been previously modified by CO2 and calcite crystals, as well as high-energy ions and hydroxyl radicals. If the absorption of photon radiation or indirect photon radiation can be improved with it. The electrolyte is liquid and consists of salt. It could be divided, and a portion of it could be used to form salt crystals. When the salt crystals are exposed to high ultraviolet radiation without a filter, could it promote photoelectric fields, static fields, in connection with the same electrolyte fluid, either attraction or plasma formation? Perhaps even unusually high proportional energy gains? Da die Farbstrucktur der Salz eingefärbt sein könnte, eventurell?

  • @tobiaswolfelsperger
    @tobiaswolfelsperger 9 месяцев назад

    Just as well, one could form salt crystals into a stable plasma through aerosol evaporation in conjunction with ultraviolet light and hydrogen bonding, if one alters, breaks, or rearranges the crystals, right? Hasn't this happened before? High-energy ions and hydrogen peroxides could be generated in a highly concentrated amount through a natural double-electrolyte vacuum chamber. (The size corresponded to limestone structures with sediment deposits in connection with strong Earth frequency fields, as found in places along a 6000 km-long freshwater stream from near the equator to a saltwater sea, such as the Mediterranean. But that's another story.)"

  • @PurwatiSambit
    @PurwatiSambit 9 месяцев назад

    Gmn cr pesennya mksh❤

  • @gordonderouyan9980
    @gordonderouyan9980 9 месяцев назад

    As others have mentioned here, there is a device out there called IteraCare. There are multiple versions of this "blow dryer" that range in price from $430US for the classic to over $4,000US for the Pro version. I would REALLY appreciate your opinion on these devices. Such as... are these devices just a scam? (a blue light for aiming, a blow dryer for heat, and I have to assume some other part of the device responsible for producing the terahertz beam.) These devices range in power from 600 watts to 1500 watts, are hand held, and plug into a normal wall outlet.

    • @hza7531
      @hza7531 7 месяцев назад

      I heard positive results from testimonies. I am also interested to know if its a scam.

  • @Trismhmm
    @Trismhmm 10 месяцев назад

    Dangerously Powerful Tech applications on this

  • @VRtechman
    @VRtechman 11 месяцев назад

    We could use an update by now. 🤔

  • @delmarphotonics
    @delmarphotonics Год назад

    Hello, we have substantial stock of GaP, ZnTe, GaAs, CdTe and MgO:LN for THz applications. Also available THz HRFZ Silicon windows, beamsplitters, lenses, and vacuum viewports Photoconductive antennas PCA for terahertz waves For example here is the current GaP stock list Mounted and unmounted GaP crystals for THz ruclips.net/video/feWaF0WeGpcH/видео.htmlere for example current GaP stock: GaP stock (H - in a standard mount diam 1", AR - AR coated both sides) 5x5x0.03 2 5x5x0.05 1 5x5x0.05H 1 5x5x0.1 5 - (unmounted, shipped in 3D printed container) Unmounted GaP crystals and assemblies are shipped inside 3D printed container ruclips.net/video/kowAxhM9tuY/видео.html 5x5x0.1AR800 1 5x5x5 2 10x10x0.1 4 - (unmounted, shipped in 3D printed container) 10x10x0.1H 3 10x10x0.2 2 10x10x0.2H 3 10x10x0.3H 7 10x10x0.3AR800 2 10x10x0.5H 6 10x10x1H 2 10x10x1AR800 1 10x10x2.5 1 10x10x0.3_3 1 - assembly 300micron GaP 110 on 3mm GaP 100 GaP assembly 300micron GaP 110 optically contacted on 3mm GaP 100 for THz applications ruclips.net/video/powRoTYP30o/видео.html Terahertz vacuum viewports: ruclips.net/video/NfXrs5qOf60/видео.html Let us know if you need anything else - I attached a brief product portfolio for your reference. Best regards, Sergey Egorov Egorov Scientific Del Mar Photonics 4119 Twilight Ridge San Diego, CA 92130 www.dmphotonics.com sales@dmphotonics.com

  • @Deltakitty32780
    @Deltakitty32780 Год назад

    ❤❤😊❤❤

  • @DrRavin
    @DrRavin 2 года назад

    Hi ...could u please let us know abt the thz tds of single crystal

  • @chreinisch
    @chreinisch 2 года назад

    thanks for this video, I was introduced to the THZ science around 30 Years ago. There are endless possibilities :-)

  • @aliceimhof1082
    @aliceimhof1082 2 года назад

    Sir, can you take apart a THz health device I possess and tell me exactly how it works so that I can learn in a simple way to explain to those of us who have this device. As well, understanding THz is one thing. Knowing that my device truly captures the 3 core technology that it says it does is yet another . Looking for truth here. Skeptics are looking for verification and viability. I don’t want to share something that is a fake.

    • @chimerekanu2412
      @chimerekanu2412 2 года назад

      Does your device work? Someone suggested it to recently but I don't have any reviews on it.

  • @kmrdevansh
    @kmrdevansh 2 года назад

    Very less content in RUclips about terahertz , thank you sir

  • @CMark50
    @CMark50 2 года назад

    Very interesting information. What kind of a device delivered the results you showed in this video? Thanks.

    • @terahertzapplicationsgroup3532
      @terahertzapplicationsgroup3532 2 года назад

      We use a TeraView spectra 4000 for our experiments shown in this video. More information is probably best found of the website by the company (www.teraview.com). If there is interest in seeing more of the equipment we can definitively make a video in due course walking through the equipment.

  • @eugenedelacerna6886
    @eugenedelacerna6886 2 года назад

    Are there photos of this device?

    • @terahertzapplicationsgroup3532
      @terahertzapplicationsgroup3532 2 года назад

      We use a TeraView spectra 4000 for our experiments shown in this video. More information is probably best found of the website by the company (www.teraview.com).

  • @fouadmas5413
    @fouadmas5413 3 года назад

    Can this technology be used for evil ? Given many people now have Nanoparticles in them via Graphene Oxide

  • @keirmurphy3142
    @keirmurphy3142 3 года назад

    Great presentation very informative.

  • @asanvigyan9275
    @asanvigyan9275 3 года назад

    can the same be used for polymeric ion exchange resins ?

  • @stephenahenkorah8525
    @stephenahenkorah8525 3 года назад

    Quantum my boss

  • @lindaampong4295
    @lindaampong4295 3 года назад

    Very very deep👌🙏🏻🙏🏻🙏🏻

  • @lindaampong4295
    @lindaampong4295 3 года назад

    Great work bro.... More grease into ur elbow

  • @markschnittker4770
    @markschnittker4770 3 года назад

    Can back scattered, low frequency Raman (10-2000cm-1, 0.3-60THz) give the full Vibrational Density of States curve and thus be a viable method to study materials? Perhaps the excessive laser power of the Raman method, or possibly the optical properties of the sample in the Vis/NIR range exclude Raman for these types of experiments?

    • @terahertzapplicationsgroup3532
      @terahertzapplicationsgroup3532 3 года назад

      That's a very good point. Raman, THz and other methods, such as neutron scattering, are absolutely complementary at this frequency range just like they are at higher energies. There have been a number of excellent studies such as the ones from Copenhagen in the late 1970s and 1980s, for example see P.A. Lund et al., Chem. Phys. 28, 167 (1978), but also many others since who have used low frequency Raman scattering methods to study these phenomena in organic molecular materials. Each method has their own challenges and, as you noted already, fluorescence and laser induced heat transfer are additional difficulties that need to be taken into account but they can be controlled. Other aspects to consider are that the Raman signal typically is scattered from a surface and hence surface properties of a sample may dominate compared to the molecular properties from the bulk of the sample. For the same reason it can be a little difficult to make quantitative measurements with the Raman methods compared to terahertz spectroscopy, which can be acquired from films of well-defined thickness in transmission. In addition, given that the beam diameter in terahertz spectroscopy is typically a few mm, compared to the laser excitation in Raman spectroscopy which is normally focused to much smaller spots, it helps measuring the average response of a material which may have tiny cracks or minute density fluctuations over length-scales of micrometres. There is a very good book that summarises the interesting physics of liquids and amorphous solids in a rigorous fashion: W. Schirmacher, Theory of Liquids and Other Disordered Media (Springer, 2014). Lots of methods are useful to understand these materials and terahertz spectroscopy is one of them - it may prove to become a very powerful tool for this field of research but it certainly won't give all the answers.

    • @markschnittker4770
      @markschnittker4770 3 года назад

      @@terahertzapplicationsgroup3532 Thanks for the excellent response. This range of the spectrum seems under-explored and ripe for new discoveries. Its great work and I thank you for spending the time to share it with the world. After some reading and understanding what is required just to generate photons in the THz range really made me appreciate the investment that you and the team must have done. It will be exciting to see what material mysteries you may uncover in your journey. Thanks for sharing

  • @alexmalisa5941
    @alexmalisa5941 4 года назад

    hello Team, it's Alex Here, watching a video all the way from Tanzania, we as a group of student from the University of Dar es Salaam, teamed up to develop a low cost, noninvasive vent, we would love to partner with you and share the development experiences, here is my email: alexgabrielmalisa@gmail.com

    • @terahertzapplicationsgroup3532
      @terahertzapplicationsgroup3532 4 года назад

      Hi Alex, thanks for getting in touch and great to hear about your group. We are very close to releasing the designs open source at GitLab and very happy to share all the knowledge we have. Right now we are a bit limited in our resources but the best way is to get in touch with us on hello@ovsi.org and we’ll be in touch!

  • @markuskuhn9375
    @markuskuhn9375 4 года назад

    Very impressive!