What does a negative real part of impedance indicate in a Nyquist plot?

I am trying to quantify Parylene C's hermetic encapsulation quality using EIS with a 2 electrode configuration (WE/WS and RE/CE). I am simply using two patterned gold layers on glass as my...

12 January 2021 7,399 14 View

How to clean LEDs (InGaN on SiC) and Ti/Au electrode chips?

I need perfect cleanliness for further processes but I am not sure which cleaning method would be sufficient yet letting the layers intact.

01 December 2020 1,099 2 View

What is the difference between the near field and the far field effects in optics?

A simple definition might help to understand the diffraction pattern in an aperiodic nano-micro structured surface.

19 July 2018 3,865 6 View

Is there a way to attach a nano particle to the cell membrane and prevent it from entering the cell?

01 June 2016 5,159 3 View

Will RGD coated nanoparticles be internalised by cells?

24 December 2015 6,303 4 View

Do we have "mesenchymal" breast cancer cell lines?

24 November 2015 8,669 6 View

What is the difference between various breast cancer cell lines?

24 November 2015 8,487 5 View

Is there any correlation between substrate stiffness and substrate roughness?

Can tuning roughness leads to different stiffness of a material?

18 October 2015 3,286 8 View

Is flow cytometry capable of calculating the viability rate of a low viscous cell solution?

As trypan blue fails to calculate the accurate viability rate of my [cell+alginate 1.2%] suspension, I was thinking about using dual florescent dye (PI & AO). However, I am concerned about whether...

22 February 2013 5,130 2 View

Dual-fluorescence viability VS Trypan blue, which one is more accurate and why am I observing such a distinctive difference?

While encapsulating ADMSCs in sodium alginate, providing a 3D environment for the cells, I come across different viability rates. Trypan blue shows a lower viability rate, as low as 50%. On the...

19 February 2013 6,200 5 View

Any resist stripper which can remove thick metal based polymer residue and which is compatible with doped silicon ?

I am looking some resist strippers which can easily remove metal based polymer residue after post dry etch process. I have some candidates below but not sure if they are compatible with doped...

21 January 2021 3,008 3 View

What is the maximum time duration allowed between photoresist coating and exposure?

I have coated the Silicon wafer with photoresist (AZ1518) but until the exposure (Laser Writer) I had to wait for more than a week (Laser Writer was not operative) - would the photoresist still be...

03 January 2021 9,640 4 View

How to compare two fMRI sessions using SPM12 (inter-sessions differences) ?

I'm performing an fMRI analysis for my master thesis using SPM and I've never worked with fMRI data before. I've succesuffy perform first level analysis but came to an obstacle. Study design...

05 December 2020 6,956 2 View

Cracked MEMS cantilevers despite wet release and critical point drying?

I have successfully released MEMS cantilevers with a photoresist sacrificial layer, using a dry plasma ashing technique. However, this process tends to damage the metal contact pads and result in...

15 November 2020 8,963 6 View

Has anyone observed delamination of pyrolysed SU-8 on SiO2 coated Silica substrates when the pyrolysis is performed outside cleanroom?

We have a quartz tube furnace (diameter 80 mm) outside the cleanroom and when tried to pyrolyse the SU-8 on SiO2 coated Si substrates at 900 C in nitrogen atmosphere, the electrodes looks fine....

08 November 2020 4,357 2 View

How can i fill zinc oxide or titanium oxide into etched pattern on glass substrate?

Hi! I need zinc oxide or titanium oxide to be filled into etched area on glass sbstrate. Etched are is being photolithography processed and being dry etched. Material must not present around the...

25 October 2020 152 7 View

How do you clean chrome/sodalime photomasks?

Hello! A colleague recently used a photomask for standard negative photolithography and some liquid photoresist solidified on the mask. Does anybody have recommended cleaning techniques? Would you...

15 October 2020 896 2 View

How to calculate element percentage from XRD analysis for mineral identification?

I have carried out a XRD analysis to determine mineral identification. I used Origin 8 program in phase identification. I couldn't carry out XRF. Is it possible and reliable to obtain different...

13 October 2020 9,228 8 View

How to increase AZ 40XT adhesion on conductive metal?

05 October 2020 2,899 3 View

SU-8 air bubble problem?

23 August 2020 9,193 7 View