Why are the silver used with a little ruthenium or gold for a metallic mirror?

More Junggyu Nam's questions See All

Does CD31 indicate cell viability?

Hi, I am wondering if the immunofluorescent staining of CD31 antibodies can both mark endothelial cells and indicating their viability. In other words, if I perform immunofluorescent staining for...

23 December 2020 5,815 4 View

Efficient preps for chunky human adipose tissue?

Hi all, I aim to isolate SVF from the tissue. However, we sometimes receive big chunks of tissue that is not through liposuction. I've been wondering is there a ingenious way to efficiently prep...

24 February 2020 6,104 1 View

What is the difference Knee joint Cryo section vs Paraffin section?

I have a tissue that causes arthritis with MIA. Usually everyone uses Cryo or Paraffin section for knee joint. What's the difference?

23 December 2019 8,103 5 View

Coculture of T cells and Osteoclast precursors?

Hi, I am trying to set a co-culture system of T cells from immunenized mice and mcsf treated mouse bone marrow. However, it is not successful to induce osteoclasts. I read that we can fix...

24 July 2019 7,157 5 View

How to visualise the trace of a atom from an AIMD calculation (Vasp + Quantum Espresso) ?

Dear All, As mentioned in the title I want to trace the dynamic of an atom from an AIMD trajectory. Is there any tool to visualise it ?. I want something like the attached figure. Regards Nam Tran

20 March 2019 8,976 2 View

Chain rule on Caputo fractional derivative?

In formula 16 of the paper called "Fractional-order gradient descent learning of BP neural networks with Caputo derivative". (I attached the paper below) The single variable chain rule for the...

30 January 2019 5,518 1 View

Genomic DNA requirement for genotyping using SNPType assays (Fluidigm)?

Hello, I am working with pumpkin genotyping using SNPType assays (Fluidigm). My gDNA samples have 260/280 ratio in a range of 1.7 - 2.0 and 260/230 ratio in a range of 1.0 - 1.8. I am wondering...

08 July 2018 4,427 2 View

What further information is needed inside the Abaqus to match the experimental load-deflection curve?

I'm trying to simulate the tensile test of corroded tensile specimen and compare the results from the experiment which is already done. I tried to extract the reaction force at the reference...

22 May 2018 2,317 4 View

Does the abundance of a mature miRNA always positively correlate with that of its pri/pre miRNA?

Hi there, I am working on plant miRNAs using Next-Generation-Sequencing data. I have found in literature that some studies indicate a high correlation between expression of mature miRNA and its...

10 April 2018 8,312 4 View

How to choose POTIM in VAPS ?

Dear all, I am trying to optimize a structure which is close to groundstate because I get it from my previous Quantum Espresso output. My vasp's log say that I should increase POTIM. However, it...

02 December 2017 5,519 1 View

Why can't make aluminum nitride film successfully by use sputter?

We use reactive sputtering process to make aluminum nitride film, and want to make c-axis aluminum nitride film on a silicon substrate, but the crystal orientation cannot be seen with...

03 March 2021 7,975 3 View

Which is the most efficient etching solution for nickel based alloys?

Which solution reveals the microstructure and features of nickel-based alloys?

02 March 2021 2,221 3 View

How to compare different concentrations of nanoparticles for characterization from ICP-MS?

I took measurements of different concentrations of 15 nm and 5 nm Au nano particle solutions. I'm trying to determine which concentration I measured gives the best reading overall. I also...

02 March 2021 7,626 1 View

Which fluorescent dye to use for measuring total ROS production?

Is DCFDA appropriate for measuring total ROS production, or can it only detect certain types of ROS? If I want to measure total ROS production, which dye should I use?

01 March 2021 9,447 3 View

What are the new 2D nanomaterials were used for Silver nanoparticles stabilization?

In the stabilization of AgNPs are vital in current research interest. However, some of the 2D nano-materials like graphene oxide, MoS2, etc... previously used to stabilize it. But still they shown...

01 March 2021 2,207 3 View

Why there are two peaks while using the mie plot of Silver nanoparticle?

Hi, I am trying to learn the theoretical modelling of silver nanoparticle using the Mie scattering theory. After that, I discovered a software named Mieplot developed by Philip Laven, where it...

25 February 2021 7,493 6 View

How to determine solutionizing time for cast Al alloys?

For wrought alloys soaking time at solutionizing temperature is determined by thickness .Do we have such standards for cast Al alloys

23 February 2021 8,839 3 View

Which thermal conductivity test recommended for Ag-Cu nanofluid?

I have prepared Ag-Cu alloy with polymer coating upon it.... how can I measure thermal conductivity of it ?

22 February 2021 5,915 3 View

How to generate AA6061 alloy or any aluminium alloy crystal in material studio?

I need to carry out molecular dynamics simulation on Aluminium alloy. For this i need the crystal structure that which could be further replicated to form a structure.

22 February 2021 1,410 1 View

What is the best etching method for Mg-Ca alloy?

I have used Picral etchant (4.2 g Picric acid, 10 mL Acetic acid, 70 mL Ethanol, 10 mL distilled water) but it didn't work. Is there any alternative?

21 February 2021 2,558 5 View

Mahmood H. M.

dear Junggyu Nam ;

standard metallic mirror coatings consist of Protected Aluminum, Enhanced Aluminum, UV Enhanced Aluminum, DUV Enhanced Aluminum, Bare Gold, Protected Gold, and Protected Silver. Protected Aluminum and Enhanced Aluminum are typically used for visible applications. UV and DUV Enhanced Aluminum can be used for UV and visible applications. Bare or Protected Gold offers high reflectance for nearInfrared (NIR) and Infrared wavelengths. Protected Silver provides the highest reflectance between 500 – 800nm and also performs well in near-Infrared and Infrared applications.

for more details can go through

Metallic Mirror Coatings

https://www.edmundoptics.com/resources/application-notes/optics/metallic-mirror-coatings/

Rüdiger Mitdank

Hello Junggyu,

from our experiments I know, that silver strongly reacts with sulfur from air. This destroys the surface and reduces therefore the reflectivity. Acid rain attacks silver surfaces. Ruthenium coatings reduce the interaction with SO2 in air and protect the silver surface.

Regards

R. Mitdank