Interdigitated Electrodes (IDE)

Advanced Interdigitated Electrodes & Electrochemical Sensors — Precision Meets Possibility

We specialize in the design and fabrication of high-performance Interdigitated Electrodes (IDEs) and Electrochemical Sensors, engineered for cutting-edge applications in biosensing, environmental monitoring, microfluidics, and industrial diagnostics. Our products are built to deliver exceptional sensitivity, reliability, and scalability—whether you’re prototyping in the lab or deploying in the field.

Interdigitated Electrodes (IDEs): Structure, Principle & Performance

IDEs feature a comb-like pattern of alternating conductive fingers, maximizing surface area and enhancing capacitive response. When a target analyte interacts with the dielectric medium between the fingers, it alters the capacitance—enabling precise detection of gases, humidity, biomolecules, and more. This principle makes IDEs ideal for capacitive sensing, strain measurement, and impedance-based analysis .

We offer IDEs fabricated from gold, platinum, titanium, chromium, and silver, using advanced deposition techniques such as:

• PVD (Physical Vapor Deposition)
• E-beam evaporation
• Sputtering
• PECVD for nitride encapsulation and insulation

Each IDE undergoes electrical characterization—including resistance, capacitance, and impedance measurements—to ensure high resolution, low noise, and frequency stability

Substrate Versatility & Customization

Our IDEs are available on a wide range of substrates, each tailored to specific application needs:

• Polyimide (PI): Flexible, chemically resistant, ideal for wearables and aerospace
• PET: Transparent and low-cost, suited for displays and touch panels
• Ceramics (Al₂O₃): High-temperature and chemically inert, perfect for gas and pressure sensors
• Silicon: Excellent electrical properties, compatible with MEMS and IC technologies
• Quartz (Glass): High transparency and thermal stability for biosensors
• FR4: Cost-effective and robust for industrial electronics

We support custom geometries, multilayer structures, and large-scale array designs. Electrode spacing, finger width, and thickness are fully customizable.

Fabrication Technologies — From Nano to Macro

We offer multiple lithography platforms to match your resolution and budget:

• E-beam lithography: 10–5000 nm nano-gap IDEs
• Laser writer (maskless): 5–10 µm for rapid prototyping
• Maskless projection lithography: 10–30 µm for scalable microfabrication
• Metal shadow masking: >30 µm for cost-effective mass production

Each method is compatible with PDMS microfluidic integration and electrode passivation to minimize leakage and enhance stability.

Electrochemical Sensors — Real-Time Chemical Intelligence

Our Electrochemical Sensors are built on three-electrode configurations or screen-printed platforms, enabling real-time detection of analytes via:

• Amperometry: Current-based detection
• Potentiometry: Voltage-based sensing
• Conductometry: Conductivity-based analysis

These sensors are fabricated using thick-film technology on ceramic or flexible substrates and are widely used in:

• Environmental monitoring: Air, oil, and water quality
• Biomedical diagnostics: Glucose and metabolite sensing
• Industrial control: Process optimization and safety
• Automotive systems: Exhaust and fuel analysis

Why Choose Us?

• Custom Design Support: From concept to deployment, our team guides you through every step.
• Global Service & Training: We offer worldwide support and hands-on training.
• Nanochip Fabrication Facilities: Ready for advanced sensor integration.
• Quality Assurance: Every product is tested for electrical performance and long-term reliability.