Goh Dirong

6 Questions 3 Answers 0 Followers

Questions related from Goh Dirong

Compulsory pretreatment of thiolated ssDNA aptamers before immobilization of on Gold/Silver nanoparticles?

Thiol-modified oligos are commonly supplied in the oxidized disulfide form by vendors. Is reducing the dithiolated oligos with TCEP or DTT to -SH compulsory before immobilizing them on Gold or...

25 May 2023 2,436 1 View

How to calculate conductivity using resistance obtained from EIS measurement by fitting into equation of σ=A/Lxρ if thickness is unknown?

I'm working on screen-printed electrode modification using nanoparticles to improve conductivity. Based on the data obtained from EIS, we can get the resistance of the modified electrode, but the...

24 January 2022 5,931 2 View

Calculation of active area of modified electrode by using Randles-Sevcik equation

I am going to calculate the active area of the modified screen-printed carbon electrode by using the Randles-Sevcik equation using 5 mM K[Fe(CN)6]3-/4- in 0.1 M KCl redox probe system. However,...

01 January 1970 3,460 1 View

How to know EDC (1-ethyl-3-(3-dimethylaminopropyl)-carbodiimide) powder is still usable through its appearance?

EDC is a chemical widely used to couple amine and carboxylated compounds to form an amide linkage. However, this chemical is moist sensitive and easily hydrolyzed when in contact with water,...

01 January 1970 950 1 View

Detection of small molecule in impedimetric aptasensor

I have fabricated an impedimetric aptasensor for small molecule detection. The black line in the attached Nyquist plot is the EIS measurement before incubation with the target. After incubating...

01 January 1970 1,114 1 View

Strange scanning mode fluorescent spctra at different excitation wavelength

I have performed scanning mode of fluorescence measurement at different excitation wavelengths from 310 nm to 410 nm and collected the emission wavelength of each excitation wavelength from 350 nm...

01 January 1970 9,058 3 View