Electronic Biosensors Based on DNA Self-Assembled Monolayer on Gold Electrodes
Bibliographic record
Abstract
Information concerning the immobilization and hybridization of DNA on a surface is paramount to the development of DNA-based electronic biosensors. This study looks at recent investigations of DNA immobilized on gold surfaces using standard electrochemical techniques such as cyclic voltammetry (CV), potential step chronocoulometry and electrochemical impedance electrochemical impedance spectroscopy (EIS). The thiol-gold linkage is exploited for the immobilization of single- and double-stranded DNA onto gold electrodes. Two redox markers of opposite charge, ferricyanide and ruthenium hexaammine, respectively, are used to probe the environment in the vicinity of thiol-derivatized DNA electrodes. M-DNA is a form of DNA which allows the specific incorporation of certain metal ions into its helical structure under stringent conditions (i.e. low ionic strength and pH of 8.5). Single-stranded DNA monolayer and double strands DNA monolayer resistances were evaluated using EIS, respectively, and CV response were compared each other. The addition of Zn 2+ , under M-DNA formation conditions, led to a dramatic enhancement of electrochemical response compared to B-DNA.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.001 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.003 | 0.002 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".