SKU: 80202663515

Fe3O4@SiO2 nanoparticle dispersion

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Description

Fe3O4@SiO2 nanoparticle dispersionProduct Name Fe3O4@SiO2 nanoparticle Product Overview Silica coated magnetic nanoparticles are a composite material consisting of a core of the magnetic material tri iron tetraoxide (Fe3O4) and a shell of silicon dioxide (SiO2). The silica coated magnetic nanoparticles are biocompatible and protect the biological activity of biological enzymes, DNA, and other biologically active substances, and can be used as a carrier for the controlled release of

Product Name

Fe3O4@SiO2 nanoparticle

Product Overview

Silica-coated magnetic nanoparticles are a composite material consisting of a core of the magnetic material tri-iron tetraoxide (Fe3O4) and a shell of silicon dioxide (SiO2). The silica-coated magnetic nanoparticles are biocompatible and protect the biological activity of biological enzymes, DNA, and other biologically active substances, and can be used as a carrier for the controlled release of these substances to enable targeted therapy of drugs. Due to their many unique physical and chemical properties, core-shell structured nanomaterials have potential applications in superhydrophobic surface coatings, chemistry, magnetism, electricity, optics, biomedicine and other fields. In addition to this, CDF can also provide core-shell structures such as magnetic iron tetraoxide encapsulated in mesoporous silicon, gold-in-silicon, silver-in-silicon, gold-in-magnetism, and gold-in-silver.

Technical Parameter 

 

Inner core diameter:-15nm

Particle diameter:0-20 nm

Appearance:Brown powder

Concentration:1-10 mg/ml

Solvent:ETOH

Product Features

Biocompatibility: The silica shell provides good biocompatibility, reducing the potential toxicity of the particles to the organism. 

Stability: The silica shell protects the inner core from oxidation and corrosion, increasing the stability of the particles in the organism. 

Easy functionalisation: the abundance of silica hydroxyl groups (Si-OH) on the surface of silica provides easy surface modification of the particles, which can be chemically linked to drugs, fluorescent markers, targeting ligands, etc. 

Good dispersibility: the silica shell helps to improve the dispersibility of the particles in aqueous and organic solvents and reduce agglomeration. 

Multifunctionality: different functional molecules can be combined to achieve a variety of biomedical functions, such as drug delivery, imaging, and therapy.

Application Fields

 

Targeted drug delivery: the silicon-coated magnetic nanoparticles can be used as a drug carrier, through the positioning of the external magnetic field, the drug will be delivered directly to the lesion site, to achieve targeted drug delivery, especially suitable for the diagnosis and treatment of specific types of cancer . 

Magnetothermal therapy: Using the heat generated by the silicon-coated magnetic nanoparticles inside the tumour cells, the heat generated by the external magnetic field can kill the tumour cells, which is a method of treating cancer in addition to surgery, chemotherapy and radiotherapy.

Magnetic Resonance Imaging (MRI) contrast agent: Due to their superparamagnetic properties, Si-encapsulated magnetic nanoparticles can be used as contrast enhancers for MRI, improving the clarity and contrast of the image.

Separation and enrichment of biomolecules: Si-encapsulated magnetic nanoparticles can be used for rapid separation and enrichment of specific molecules in biological samples, such as in proteomics research.

Biosensing: The magnetic properties of Si-encapsulated magnetic nanoparticles allow the development of novel biosensors for the detection of biomolecular interactions. 

Tissue engineering: Si-encapsulated magnetic nanoparticles can be used as bone tissue regeneration materials to promote osteogenic differentiation for tissue engineering research.

 

Related Information

Sealed, avoid light, and keep at 4¡ãC Expiry date: Six months.Please e-mail for the detailed characterizationdata.

Email:[email protected]

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SKU: 80202663515

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Matthew
Draper, US
★★★★★ 5
Top quality tool that improves espresso extraction
Color: Gray
Fantastic and easy to use. Stand sits on top of espresso machine and the WDT tool is always ready, no unscrewing. Upgraded from a screw-shut version and couldn't be happier. Comes with extra needles which I hope to never need. Easy to recommend
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Reviewed in the United States on May 24, 2026
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Verified Purchase
E. A. Baptist
Belleville, US
★★★★★ 4
Makes a difference but maybe only to caffeine addled coffee snobs
Color: Black
I won't say that everyone urgently needs one of these. This is helped me up my game. Perhaps not absolutely necessary, but it noticeably reduces canalization and improves extraction. And it appears to have improved not only my espresso, but my pour-overs and my Mokapot (especially the Mokapot!). It's a little fiddley to assemble - there's sets of springs and needles - but once you get it all locked down, its very tight. There's a set of spares - I can't imagine needing them. The tool kinda sits in the weighted base, but it appears to stay put in my cabinet.
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Reviewed in the United States on May 24, 2026
D
Verified Purchase
David J.
Pawtucket, US
★★★★★ 5
Excellent espresso tool
Color: Black
Very nicely made and works as intended. Also comes with extra needles. Highly recommend.
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Reviewed in the United States on May 17, 2026
J
Verified Purchase
JP Richardson
Houston, US
★★★★★ 5
WDT Tool: The Needle in My Espresso Haystack
Color: Black, Color: Black
I kind of went down a deep dive researching these WDT (Weiss Distribution Technique) tools, and I have to say, this one hits the sweet spot! The needle size is just right, and the shape is spot on for what I need. Plus, it’s a nice perk that you can remove and replace the needles. I’ve tried using needles and bobby pins in the past, but they were too thick and just ended up creating their own channels—talk about a brewing disaster! Now, here’s the twist: even though it comes with seven needles installed (and more replacements), I find it a bit overkill. With all those needles, it just traps the grinds in the center, pushing stuff around like it’s playing a game of “don’t let the coffee escape.” So, I stick with just three needles in a triangle formation for optimal distribution. Pro tip: don’t forget to adjust the depth as you use it to ensure you’re getting the best coverage of your coffee grounds! The build quality is actually pretty impressive. It feels like well-constructed metal components that could survive a small espresso war. Plus, it's more affordable than some of those fancy options out there—because who needs a second mortgage for great coffee? It looks quite nice on my counter, and the little stand is a handy extra touch. Overall, if you’re looking to up your espresso game and avoid the chaos of uneven distribution, this WDT tool is worth considering. Just remember: less is sometimes more when it comes to needles!
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Reviewed in the United States on October 20, 2024
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Verified Purchase
Victoria Hawkins
Natrona Heights, US
★★★★★ 5
Love this thing!!!
Color: Black, Color: Black
Hey, coffee lovers! ☕️ I recently got my hands on the WDT Espresso Distribution Tool Espresso Stirrer Tools for Barista, and let me tell you, it's a game-changer! 🙌 I'm absolutely thrilled with this amazing tool and can't recommend it enough to fellow coffee enthusiasts and professional baristas alike. First things first, the build quality of this espresso stirrer is top-notch! 💪 The aluminum alloy handle not only adds durability but also gives it a sleek and professional look, especially in the matte black finish. Holding this tool feels great, and the ergonomic design ensures a comfortable grip even during those long brewing sessions. The 0.35mm 7 needles are perfectly spaced, allowing for precise and consistent distribution of coffee grounds in the portafilter. This means a more even extraction and an enhanced flavor profile in every sip. And guess what? You get 7 extra replaceable needles as a bonus! 🎉 This ensures the longevity of the tool and easy replacement when needed. But wait, there's more! The included stand is a fantastic addition to this package. 🎁 It not only serves as a convenient storage solution but also adds a touch of elegance to my coffee setup. No more rolling around and cluttered workspace. Everything stays in place, thanks to the stand! Using the WDT Espresso Distribution Tool is a breeze! ⚡️ The precisely engineered needles and ergonomic design make it effortless to distribute the coffee grounds evenly. Whether you're a pro barista or a home brewing enthusiast, this tool will take your espresso game to new heights. Trust me on this one! In conclusion, the WDT Espresso Distribution Tool Espresso Stirrer is an absolute must-have for any coffee lover out there. 💯 Its top-notch build quality, precision, and thoughtful design will bring joy to your coffee routine. So, don't wait any longer! Treat yourself and elevate your espresso-making experience with this amazing tool. Cheers! 🥳☕️
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Reviewed in the United States on June 12, 2023

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