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Open research questions in Advanced biosensing and bioanalysis techniques

191 gap statements mined from Advanced biosensing and bioanalysis techniques papers in our 4.5M-paper local library, which holds 4,341 papers on the topic — drawn mostly from each paper's own stated research gap, future-work, challenge and limitation notes, and its abstract. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one.

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What the literature leaves open

  • The lack of rapid and ultrasensitive detection methods for P. aeruginosa. The need for a sensing strategy with high selectivity against other bacterial species. The requirement for a platform with potential for point-of-care diagnostics and real-time infection monitoring.

    Dual-mode electrochemical and colorimetric biosensing platform using MOF-stabilized iron nanoclusters for ultrasensitive detection of Pseudomonas aeruginosa · 2026 · DOI

  • Intracellular studies of zinc finger proteins are scarce. The effect of toxic metal ions on DNA binding of zinc finger proteins is not well understood. A novel method for studying zinc finger proteins inside E. coli cells is needed.

    DNA recognition, cleavage, and toxic metal ion interaction of an artificial zinc finger protein inside E. coli cells · 2026 · DOI

  • Testing de novo alenomer discovery using much larger, naive libraries and targets lacking known aptamers. Further improving alenomer affinity by focusing on aromatic amino acids.

    Unlocking chemical diversity in aptamers with DNA orthogonal barcodes · 2026 · DOI

  • The lack of a robust and reliable platform for real-time UA monitoring. The limited stability and selectivity of conventional sensors for bioanalyte detection.

    Non-enzymatic dual-mode plasmonic framework for robust bioanalyte detection · 2026 · DOI

  • Although the proposed Ce-UiO-66-based fluorescent apta-sensor shows clear advantages in detection sensitivity and cost, a key limitation is that the current system has only been validated in diluted artificial serum.

    A sensitive and cost-effective “turn-on” aptasensor for carcinoembryonic antigen using Ce-UiO-66 as an ultraefficient nanoquencher · 2026 · DOI

  • Conventional quality control tests for Diphtheria vaccines have limitations. There is a need for a more sensitive and specific method for Diphtheria toxoid detection.

    Development of a quality control test for diphtheria vaccine based on an electrochemical aptamer-based biosensor · 2026 · DOI

  • Conventional methods for cancer diagnosis have limitations. Liquid biopsy offers a non-invasive alternative, but requires sensitive and specific detection of ctDNA.

    Development of an ligase chain reaction–fluorescence–SERS multimodal biosensing workflow for ultrasensitive detection and single-base discrimination of KRAS ctDNA · 2026 · DOI

  • Future research will focus on integrating a multiplexed array to detect multiple allergens simultaneously and enhancing the sensitivity through secondary nanomaterial modifications.

    A truncated aptamer-based electrochemical sensor for sensitive Ara h 1 determination on gold nanoparticle-modified screen-printed electrodes · 2026 · DOI

  • The need for alternative approaches to silica-coated surfaces in molecular diagnostics. The lack of cost-effective and simplified methods for DNA capture and purification.

    Plastic surface-immobilized primers for integrated DNA capture and purification in simplified molecular diagnostics - a proof-of-concept study · 2026 · DOI

  • The lack of standardized methods and reference materials for the assessment of nanotherapeutics. The need for traceable measurement methods for nanotherapeutics.

    Protocols for sample preparation and measurement of nanoparticle stability and their biotransformation in biological matrices. · 2026 · DOI

  • This study is subject to several limitations that should be considered when interpreting its findings. Fourth, the present analysis assumes ideal bioreceptor immobilization and does not account for biofouling, non-specific binding, or matrix effects that would arise when the sensor is exposed to complex biological fluids such as serum or plasma in a real diagnostic setting.

    Dielectric interlayer-enhanced surface plasmon resonance biosensor with 1D convolutional neural network surrogate modelling for cancer biomarker, glucose, and low refractive index analyte detection · 2026 · DOI

  • Because they exhibit extreme toxicity at minute doses and are frequently encountered within highly complex biological matrices, their rapid and precise identification remains a paramount challenge in forensic and analytical toxicology.

    Specific Binding Agents for the Molecular Recognition of Biotoxins: Recent Advances and Applications in Forensic Toxicology · 2026 · DOI

  • Lack of a versatile platform for specific imaging of diverse enzymes within extracellular environments characterized by pH dysregulation. Limited spatial selectivity and detection sensitivity of current protease detection methods.

    Spatially Controlled Imaging of Proteases in Acidic Extracellular Milieu of Lesions Using DNA‐Peptide‐PNA Hybrid Probes · 2026 · DOI

  • The study focuses primarily on Co2+ coordination; broader investigation of other divalent metal ions under magnetic fields could strengthen generalizability.

    Aptamers with magnetically tunable affinity for divalent cobalt ions · 2026 · DOI

  • Some experiments were performed only in duplicate rather than in triplicate (Fig. 2c, d; Fig. 3d, e; Fig. 6c, d; and Supplementary Figs. 2, 12-17, 18, 20, 21), which may limit statistical robustness.

    Aptamers with magnetically tunable affinity for divalent cobalt ions · 2026 · DOI

  • The study used commercial human blood serum samples, which may not fully represent real-world scenarios. The immunosensor was evaluated for a limited period of 24 weeks.

    Portable electrochemical immunosensor for point-of-care testing of ovarian cancer biomarker HE4 in commercial human blood serum samples · 2026 · DOI

  • Limited stability of conventional sensors. Difficulty in measuring uric acid due to interference.

    Non-enzymatic dual-mode plasmonic framework for robust bioanalyte detection · 2026 · DOI

  • Limited real-time capabilities of traditional rapid analysis methods. Cost control and large-scale manufacturing capabilities of electrochemical immunosensors.

    Research progress on electrochemical immunosensors for the detection of cardiovascular biomarkers · 2026 · DOI

  • Limited channel modulation efficiency near the semiconductor interface in traditional FET sensors. Interfering components in complex matrices that may affect target capture and signal transduction.

    Micromotor-assisted graphene field-effect transistor for label-free and ultrasensitive detection of SARS-CoV-2 in complex matrices · 2026 · DOI

  • Chemometrics is increasingly evolving from an auxiliary data-processing step into an integral component of biosensing architecture.

    Chemometrics reshapes the role of biosensors: from signal transducers to intelligent analytical systems · 2026 · DOI

  • Further evaluation of the immunosensor in real-world scenarios. Investigation of the use of other nanomaterials for enhancing the performance of the immunosensor. Development of multiplexed immunosensors for the detection of multiple biomarkers.

    Portable electrochemical immunosensor for point-of-care testing of ovarian cancer biomarker HE4 in commercial human blood serum samples · 2026 · DOI

  • Reducing energy consumption is crucial for achieving long-term continuous monitoring, flexible miniaturization, and self-powered operation - Researchers have optimized more intelligent algorithms that reduce computational power, memory, and data transmission consumption while maintaining detection…

    AI-Assisted Molecular Biosensors: Design Strategies for Wearable and Real-Time Monitoring · 2026 · DOI

  • Further optimization of the assay conditions to improve sensitivity and selectivity. Application of the method to other types of samples. Development of new technologies for OTA detection.

    Highly sensitive detection of ochratoxin A by fluorescence polarization assay based on rolling circle amplification · 2026 · DOI

  • The development of sensing methods that integrate operational simplicity, low cost, and high detection performance. The exploration of new biomarkers for the early diagnosis and prevention of CVDs. The improvement of the cost-effectiveness and large-scale manufacturing capabilities of electrochemical immunosensors.

    Research progress on electrochemical immunosensors for the detection of cardiovascular biomarkers · 2026 · DOI

  • Future device optimization before translation toward routine or point-of-care applications, - Evaluation of long-term sensor stability, including storage-stability, long-term signal drift or reusability over days, weeks or months, - Training machine learning models to accelerate generation of novel sequences and predictive modeling of binding…

    Single-sequence based gFET-aptasensors for the discrimination of apo- and holo-RBP4 in human serum · 2026 · DOI

Most-cited papers in Advanced biosensing and bioanalysis techniques

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Open questions raised by papers listed on this page include: (1) The lack of rapid and ultrasensitive detection methods for P. aeruginosa (“Dual-mode electrochemical and colorimetric biosensing platform using…”, 2026); (2) The effect of toxic metal ions on DNA binding of zinc finger proteins is not well understood (“DNA recognition, cleavage, and toxic metal ion interaction of an artificial…”, 2026); (3) The lack of a robust and reliable platform for real-time UA monitoring (“Non-enzymatic dual-mode plasmonic framework for robust bioanalyte detection”, 2026); (4) There is a need for a more sensitive and specific method for Diphtheria toxoid detection (“Development of a quality control test for diphtheria vaccine based on an…”, 2026); (5) Future research will focus on integrating a multiplexed array to detect multiple allergens simultaneously and enhancing the sensitivity through secondary nanomaterial modifications (“A truncated aptamer-based electrochemical sensor for sensitive Ara h 1…”, 2026). 191 gap statements have been mined from Advanced biosensing and bioanalysis techniques papers in our 4.5M-paper local library, which holds 4,341 papers on the topic; the gaps come from whichever of those papers state one. They are mostly the research gaps the authors state and the papers' abstracts, plus future-work, limitations and challenges passages. The ones listed below are a selection still marked open; each names the study that raised it, with a DOI link where the paper has one, so you can read the original claim in context.

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