HengaoDe HAD-A280D Benchtop Spin Coater for Thin-Film Deposition on Wafers, Glass, and Ceramic Substrates
| Brand | HengaoDe |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | HAD-A280D |
| Price | USD 42.50 (FOB) |
| Chamber Internal Diameter | 290 mm |
| Compatible Substrate Size | Ø10–280 mm circular wafers or 200×200 mm square plates |
| Programmable Steps | 26 stored protocols, up to 51 speed steps per protocol |
| Acceleration Control | Adjustable positive/negative ramp rates |
| Interface Language | English & Chinese |
| Display | Touch-enabled LCD with icon-based 6-key navigation |
Overview
The HengaoDe HAD-A280D Benchtop Spin Coater is an engineered solution for reproducible thin-film deposition via rotational coating—a process governed by centrifugal force, solvent evaporation kinetics, and viscous drag dynamics. Designed for academic laboratories, R&D facilities, and pilot-scale production environments, the system enables precise control over film thickness, uniformity, and surface morphology on rigid planar substrates including silicon wafers, fused silica, borosilicate glass, alumina ceramics, stainless steel, and other metallized or oxidized surfaces. Its modular architecture separates the motor-driven spin chamber from the dedicated controller unit, minimizing electromagnetic interference and thermal coupling—critical for maintaining process stability during extended operation cycles. The device operates under ambient atmospheric conditions and does not require vacuum or inert gas purging, making it suitable for rapid prototyping of photoresists, polymer electrolytes, sol-gel precursors, conductive inks, and anti-reflective coatings.
Key Features
- High-resolution programmable controller supporting 26 independent coating protocols, each configurable with up to 51 discrete rotational speed steps and independently adjustable acceleration/deceleration profiles.
- Chamber geometry optimized for laminar flow distribution: 290 mm internal diameter accommodates substrates from Ø10 mm up to Ø280 mm circular wafers or 200×200 mm square plates without edge exclusion artifacts.
- Dual-language interface (English/Chinese) with ISO-standard symbolic navigation—six tactile keys guide users through parameter entry, program recall, real-time monitoring, and fault diagnostics.
- Onboard template library includes pre-validated process sequences for common materials (e.g., SU-8, PMMA, PEDOT:PSS), reducing setup time and operator dependency.
- Brushless DC motor with closed-loop speed feedback ensures ±0.2% RPM stability across the full operating range (0–8000 rpm), critical for achieving sub-5 nm thickness repeatability in multi-layer stacks.
Sample Compatibility & Compliance
The HAD-A280D accepts standard substrate formats used in microfabrication and materials science workflows. It supports manual loading/unloading of bare or pre-patterned wafers, microscope slides, quartz cuvettes, and custom-shaped ceramic tiles. No vacuum chucking is required; adhesion relies on surface tension and centrifugal retention. While not certified to SEMI or ISO 14644 cleanroom standards, its sealed motor housing and non-shedding chamber liner meet basic laboratory hygiene requirements for Class 10,000 (ISO 7) environments. All electrical components comply with GB/T 19001–2016 (equivalent to ISO 9001:2015) quality management systems. The device is CE-marked for EMC Directive 2014/30/EU and Low Voltage Directive 2014/35/EU.
Software & Data Management
The embedded controller firmware provides local data logging of all executed parameters—including actual RPM, dwell time, acceleration rate, and timestamp—with automatic overwrite protection for the last 100 runs. Export is supported via USB 2.0 to CSV format for post-processing in MATLAB, Python (Pandas), or Excel. No proprietary software installation is required; raw logs are human-readable and compatible with LIMS integration via serial ASCII output (RS-232 optional). Audit trails include operator ID input (alphanumeric), session start/stop markers, and error code reporting aligned with IEC 62304 Class B medical device software guidelines—enabling traceability in GLP-compliant educational research settings.
Applications
- Microelectronics education: Fabrication of photolithographic resist films for student-level IC process training.
- Perovskite solar cell R&D: Controlled deposition of CH₃NH₃PbI₃ precursor layers with tunable crystallinity via spin-speed modulation.
- Biomedical coating: Uniform application of chitosan or gelatin hydrogels onto biosensor electrodes prior to crosslinking.
- Optical thin-film development: Layer-by-layer assembly of TiO₂/SiO₂ antireflection stacks on laser optics substrates.
- Quality assurance in printed electronics: Verification of inkjet-printed electrode line uniformity using spin-coated reference films.
FAQ
What substrate materials are compatible with the HAD-A280D?
Silicon, sapphire, fused silica, borosilicate glass, aluminum oxide, stainless steel (304/316), titanium, and FR-4 PCB substrates—all with flatness ≤5 µm over 100 mm diameter.
Does the system support automated dispensing?
No—the HAD-A280D is a manual dispense spin coater. Liquid application must be performed externally using pipettes or syringes prior to rotation initiation.
Can the controller store custom acceleration profiles?
Yes—each of the 51 speed steps within a protocol allows independent specification of ramp-up and ramp-down time (0.1–9.9 s resolution), enabling optimization for shear-thinning or viscoelastic fluids.
Is temperature control integrated into the chamber?
No—substrate heating/cooling requires external hotplates or Peltier stages. The chamber operates at ambient lab temperature (15–30°C recommended).
What maintenance is required for long-term reliability?
Monthly cleaning of the chuck surface with IPA; annual calibration of tachometer feedback loop using optical strobe verification—documented in the included maintenance logbook.
