Product Description
The BioDeviceLab 100 nm Gold NanoUrchins are precision-synthesized anisotropic gold nanostructures characterized by a central core surrounded by multiple nanoscale protrusions. This “urchin-like” morphology dramatically increases effective surface area and generates localized plasmonic hot spots, resulting in significantly enhanced light–matter interactions compared to spherical gold nanoparticles of similar size.
At an effective diameter of approximately 100 nm, these nano-urchins exhibit strong localized surface plasmon resonance (LSPR) with broadened spectral features and heightened sensitivity to changes in the surrounding dielectric environment. These properties make them particularly well suited for refractive index sensing, plasmonic transduction, and signal amplification in optical and electrochemical biosensors.
The particles are supplied as a stable aqueous colloidal suspension in a distinctive deep ruby-red solution, reflecting their enhanced plasmonic response. The large-volume (500 mL) format supports scalable assay development, probe conjugation, and repeated use in microfluidic, lab-on-chip, and biodevice validation studies.
Intended Use
This product is intended for research applications including:
• Plasmon-enhanced biosensor development
• Refractive index and LSPR-based sensing
• Surface-enhanced Raman spectroscopy (SERS)
• Optical and colorimetric assay amplification
• Protein, antibody, and ligand conjugation
• Microfluidic and lab-on-chip integration
• Biodevice calibration and benchmarking
Principle of Operation
Gold NanoUrchins exhibit localized surface plasmon resonance driven by collective oscillation of conduction electrons across their branched geometry.
• The sharp tips and protrusions create intense electromagnetic hot spots.
• LSPR peak position and magnitude are highly sensitive to local refractive index changes.
• Binding of biomolecules amplifies plasmonic shifts relative to spherical nanoparticles.
• Increased surface area enhances probe loading and interaction efficiency.
Optical & Physical Characteristics
Nanostructure type: Gold NanoUrchin
Effective diameter: ~100 nm
Plasmonic response: Broad visible-range LSPR (~530–620 nm, morphology dependent)
Particle concentration: ~5 × 10¹¹ structures/mL
Weight concentration: ~1.5 mg/mL
Size dispersity: <20% (effective diameter)
Surface area: Significantly enhanced versus spherical AuNPs
Surface chemistry: Compatible with passive adsorption and covalent functionalization
Supplied volume: 500 mL
Selectivity & Compatibility
Gold NanoUrchins are chemically inert and compatible with proteins, nucleic acids, polymers, and common biological buffers. Their morphology supports high-density probe immobilization while maintaining colloidal stability in biodevice and microfluidic environments.
Package Contents
Each unit contains:
• 500 mL of 100 nm gold NanoUrchin colloidal suspension
• Optical and morphological quality control documentation
Required Materials (Not Provided)
• UV–Vis spectrophotometer
• Optional Raman spectrometer (for SERS applications)
• Standard laboratory pipettes and containers
• Buffers compatible with downstream conjugation
Sample Handling & Use
• Gently swirl before use to ensure uniform dispersion.
• Avoid vigorous shaking or sonication that may disrupt branched morphology.
• Dilute using compatible aqueous buffers if required.
• Use clean laboratory practices to maintain colloidal integrity.
Quality Control
• Each production lot is evaluated for plasmonic response, optical consistency, and morphological uniformity.
• Batch-to-batch reproducibility supports reliable biosensor and assay development.
Storage & Stability
• Store at 4–25 °C.
• Do not freeze.
• Protect from prolonged exposure to light.
• Proper storage preserves optical performance and colloidal stability.
Limitations
• For research use only.
• Not intended for diagnostic or therapeutic applications.
• Optical response may vary depending on buffer composition and functionalization strategy.
Applications
• High-sensitivity plasmonic biosensors
• LSPR-based refractive index sensing
• SERS and enhanced optical assays
• Advanced biodevice and microfluidic systems
• Translational biosensing research
