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	Microfluidic chip design and DFM review

Service \ Design & prototype \ Product design & DFM

PRODUCT DESIGN & DFM

Microfluidic chip and product design from the assay to a manufacturable device.

MATERIAL

PDMS · thermoplastics · glass · silicon

MINIMUM ORDER

One project — no minimum

LEAD TIME

Design proposal in 2–4 weeks · DFM in 1 week

\ OVERVIEW

Product design & DFM

We offer three design services. Complete product design — the reader instrument and the cartridge it runs, designed as one system — for at-home test products. Chip design for any application, on two routes. Design support is for teams with a schematic and engineers of their own; full development runs from the assay to a verified device, with the IP position handled. And DFM review, which is complimentary. A six-stage program takes a concept to commercial production, with the manufacturing route chosen at the start rather than discovered at tooling.

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3 services

product design · chip design · DFM review

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2 routes

chip design: design support or full develop

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2–4 weeks

to requirement assessment & design proposal

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500+

projects delivered

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ISO 13485

certified · FDA registered

\ CAPABILITIES

Scope and deliverables

We manufacture what we design, so the DFM report is written against our own tooling and yield, and the prototype, the pilot mold and the production mold come from one team. Every process is available at stage one, and each stage states the monthly chip volume it reaches before you commit.

What we design

Complete product design

WHAT IT COVERS

At-home test products only — the reader instrument and the cartridge it runs, designed as one system so the detection, the fluidics and the user interaction are settled together

WHAT WE NEED FROM YOU

The assay, the intended user and the intended use environment

HOW IT IS CHARGED

Quoted per program

​

​

Chip design

WHAT IT COVERS

Microfluidic chip architecture across any application — the channel layout, the geometry and the process route that will make it. Two routes, below

WHAT WE NEED FROM YOU

A workflow (the one item we cannot start without — a hand sketch of the steps is enough), the assay, and reference literature where it exists

HOW IT IS CHARGED

Fixed fee, or from $200,000 for full development

DFM review

WHAT IT COVERS

Manufacturability assessment of a design against the process it will actually be made in: what holds, what does not, and what changing it costs

WHAT WE NEED FROM YOU

CAD and a 2D drawing

HOW IT IS CHARGED

Complimentary

​

​

​

Why complete product design is scoped to one product type.

Designing a reader and its cartridge together is a systems problem: detection, fluidics, mechanics, user handling and manufacturing cost all move against each other. At-home tests are where we have done it before. For every other application, the useful division is that the chip is ours and the instrument is yours.

Chip design — design support vs. full development

The route depends on how much design already exists, and on whether you want the intellectual-property position handled as part of the work.

Design support

WHO IT IS FOR

You have a preliminary design or schematic, and engineering capability of your own

WHAT YOU RECEIVE

Your concept developed through to a manufacturable CAD file, with DFM

VERIFICATION

Yours to run

PRIOR ART / FREEDOM TO OPERATE

Not included. We design to your specification; the design is not warranted free of third-party rights — that stays with you and your counsel

PATENTS

None filed

​

​

FEE

Fixed fee, estimated and approved before anything starts — no hourly meter, no invoice you have not already seen

CREDITED AGAINST MANUFACTURING

—

Full development

WHO IT IS FOR

You have an assay and an intended product, and no device design

WHAT YOU RECEIVE

Concept to verified device: architecture, CAD, prototypes, design iterations, verification builds and the IP position

VERIFICATION

Included — it runs on our own manufacturing, which is why the two are quoted together

PRIOR ART / FREEDOM TO OPERATE

Included — prior-art search and freedom-to-operate opinion by registered patent counsel

​

PATENTS

One or more US applications, drafted and prosecuted by patent counsel. Inventors named as the law requires; all rights assigned to you

FEE

From $200,000, beginning with a $15,000–30,000 Phase 0 feasibility study

CREDITED AGAINST MANUFACTURING

Part of the design fee is credited against production

vs

Phase 0 exists so that nobody commits $200,000 to a plan.

It produces two or three candidate architectures, the manufacturing route each one implies, a first read of the patent landscape, and a costed plan for the full program. If the device should not be built the way you imagined, you learn that for the price of Phase 0.

How the IP works on full development.

Patent work is performed by registered patent counsel that we engage and manage — HiComp does not itself practice before the USPTO. Inventorship is determined by who actually conceived the invention, as US law requires, so where our engineers contribute they are named; every right they hold is then assigned to you. You own the patent. Counsel and USPTO fees are quoted and passed through at cost, separately from the program fee, so neither side is exposed to how many office actions a case attracts.

\ MATERIALS

Materials

Material and process are one decision, and it is made in Stage 1. The prototyping route and the volume route have to be compatible, or the program pays for the design twice.

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Injection-molded COC/COP or PC → CNC micro milling or 3D-printed inserts in the same resin

WHY THIS PAIRING

Machined in the production resin, so optical and chemical behavior is real from the first test

WHERE IT BREAKS

Draft, wall thickness and shrink do not exist in a machined part — they have to be designed in before tooling

PDMS at volume

PDMS at volume → Soft lithography on SU-8, then a closed mold

​

WHY THIS PAIRING

Identical material at both ends; only the forming method changes

​

WHERE IT BREAKS

Open-cast tolerances are looser than closed-mold production — expect the transfer step

Hand holding a patterned glass microfluidic slide

Glass → Etched glass at wafer scale

​

WHY THIS PAIRING

Same substrate, process and bonding route — prototype and production differ only in wafer count

WHERE IT BREAKS

Volume scales by batching wafers, not by tooling, so unit cost falls more slowly than in a molded part

Desktop dispensing robot with syringes for hybrid chip constructiconstruction

A hybrid construction → The layer that carries the function first

​

WHY THIS PAIRING

Establishes whether the biology or the detection works before the assembly problem is added

WHERE IT BREAKS

Bond compatibility between the layers is the constraint, and it is easiest to fix on paper

Every substrate compared, grade by grade, is in the Materials guide; all eight processes side by side are on the services overview.

Design rules by route

What each prototyping and production route will actually hold. Design to the route you intend to scale in.

3D printing — two-photon

MINIMUM FEATURE

Sub-micron

TOLERANCE

Process-dependent

TOOLING

None

SENSIBLE QUANTITY

1–50

Glass — DRIE and laser

​

MINIMUM FEATURE

1 µm

TOLERANCE

Process-dependent

TOOLING

Photomask

SENSIBLE QUANTITY

One wafer upward

​

​

3D printing — DLP

 

MINIMUM FEATURE

~2 µm

TOLERANCE

Process-dependent

TOOLING

None

SENSIBLE QUANTITY

1–200

MEMS wafer process

​

MINIMUM FEATURE

2 µm

TOLERANCE

Wafer-scale

TOOLING

Photomask

SENSIBLE QUANTITY

One wafer upward

​

​

CNC micro milling​

MINIMUM FEATURE

~100 µm channel width

TOLERANCE

±0.05 mm standard; ±0.02 mm high precision

TOOLING

None

SENSIBLE QUANTITY

1–500

Cleanroom injection molding

MINIMUM FEATURE

> 500 µm general features; replicated microchannels 10–200 µm

TOLERANCE

Typically ±0.30 mm or tighter by feature

TOOLING

Production mold

SENSIBLE QUANTITY

500 upward

PDMS soft lithography

​

MINIMUM FEATURE

~5 µm

TOLERANCE

Mold-limited

TOOLING

SU-8 master

SENSIBLE QUANTITY

20–5,000

The most costly design error we see is a molded part designed as though it were a machined one.

Draft angle, uniform wall thickness, gate position, knit lines and shrink have no equivalent in a milled prototype, and they decide whether the tool can be filled. If the product will be molded, the molding rules apply from the first CAD file.

\ PROCESS

Design process

Six stages from first conversation to commercial supply. Durations are typical for a device of moderate complexity and run from sign-off of the previous stage; Stages 4 and 5 frequently overlap.

3D rendering of a microfluidic chip concept

Concept and requirement definition

Define the application scenario and the core functional requirements — throughput, detection principle, sample type. Ends with a requirement assessment report and an initial design proposal.

2–4 weeks · documentation only

Engineers reviewing a microfluidic chip design on screen

Chip design and prototype development

Complete the chip structure design; produce the first SU-8 molds and PDMS or CNC prototypes as functional verification chips.

2–4 weeks · 20–50 chips/month

Inspecting a prototype chip under a digital microscope

Function verification and optimization

Iterate design and verification until the core functions meet the requirement. We iterate; you test on your own assay; the loop repeats.

​

2–3 months · 50–200 chips/month

Operator examining a pilot-batch chip under a lamp

Process finalization and pilot production

Establish stable bonding, packaging and surface treatment; deliver consistent small batches; develop pilot molds.

3–5 months · 200–1,000 chips/month

Mold room with production injection molds

Mass-production preparation

Develop production molds and validate large-scale feasibility before production tooling is released.

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3–5 months · 1,000–5,000 chips/month

Injection molding machine with robotic part removal

Commercial production

Stable, continuous supply against commercial demand under a long-term supply agreement.

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Ongoing · ≥ 10,000 chips/month

What each side does

The division of labor follows your request. By default you keep the biology and the IP, and we build the device and the process that makes it repeatably; where you want it, we build the chip and the biology too, as a full-service program.

↓ YOU RECEIVE

↓ YOU PROVIDE

 

Stage 1–2

Application background, workflow, assay, literature and patent references, key requirements, testing requirements, design sign-off

Requirement assessment report, initial design proposal, CAD drawings, SU-8 molds, first functional verification chips

 

Stage 3

Experimental testing on your own assay, and feedback

Multiple design iterations, test reports, optimization plans

 

Stage 4–5​

Confirmation of the process plan, target testing conditions, mold structure and QC acceptance criteria

Process documentation (SOPs), consistency reports, stable small-batch product, pilot molds, production molds, process validation reports, quality inspection plans

 

Stage 6

Long-term supply agreement, rolling forecast, regular market and application feedback

Mass-produced chips, full QC documentation, packaging and delivery

End to end, a device of moderate complexity takes roughly nine to fifteen months from first conversation to commercial production.

Most of that is not drawing; it is the verification and process-stabilization work in Stages 3 and 4, where a design either becomes manufacturable or does not.

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\ QUALITY CONTROL

Stage gates

Stage gate

Each stage begins on written acceptance of the previous deliverable — what keeps a redesign from arriving after tooling

Verification data

Test reports at each Stage 3 iteration, against the acceptance criteria agreed in Stage 1

Process validation

Formal validation and an inspection plan in Stage 5, before production tooling is released

Quality system

ISO 13485 certified · FDA registered

DFM report

Issued against the CAD before any mold or master is cut: what will hold, what will not, what it would cost to change​

​

Consistency reports

Batch-to-batch data in Stage 4, before the process is called stable

Documentation

SOPs, validation reports and inspection plans produced under ISO 13485 as the work happens

Design history is easier to keep than to reconstruct.

If the device is heading for a regulatory submission, we generate the documents that submission needs at the stage they belong to. Rebuilding a design history file two years later from emails and CAD revisions is the expensive way to do it.

\ LEAD TIME & MOQ

Fees, timelines and IP

Fees

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DFM review

Complimentary

​​​​

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Credited against manufacturing

Part of the full-development design fee is credited against production

​

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Chip design — design support

Fixed fee, estimated and approved before work begins

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Patent costs

Counsel and USPTO fees quoted and passed through at cost, separately from the program fee

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Chip design — full development

Phase 0 feasibility study $15,000–30,000; full program from $200,000

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Complete product design

Quoted per program

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Timelines

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Requirement assessment & proposal

2–4 weeks

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First functional chips in hand

2–4 weeks after design sign-off

​

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Verified design to validated tooling

2–3 months, then 3–5 months each for pilot and production tooling, frequently overlapping

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Phase 0 duration

2–4 weeks

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What you own

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The design

Yours — the device design, the application and the data

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The patents

Yours, on the full development route — every right held by our engineers is assigned to you

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Your biology

Stays with you — we do not run your assay or hold your compounds, reagent formulation or clinical data

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What HiComp retains

Our own process knowledge — how a geometry is molded or bonded — not specific to your product

\ SHOWCASE

Case studies and applications

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COMPLETE PRODUCT DESIGN

The one product type where we design the reader and the cartridge together.

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DESIGN → TOOLING

SBS-format plates designed for the mold from the first CAD file.

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CHIP DESIGN

Device design in PDMS or hybrid construction, with the biological model developed alongside.

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ROUTE CHOSEN EARLY

Partition arrays where the prototyping and volume routes must be compatible from Stage 1.

FAQ

FAQ

\ RELATED

Related services

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Prototypes in production thermoplastic, tool-free one-off — first molded build.

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Sub-micron & microscale prototypes & molds in 48 hours, before a route is committed.

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Stages 4-6 end for thermoplastics — tooling, DFM, trial rounds, OQ & PQ, one quote.

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\ START HERE

TELL US ABOUT YOUR PROJECT

Reply within 2 business days.
NDA on request.

Project stage
Prototype
Pilot batch / process verification
Production
Quantity (per month at production)
Fewer than 20
20–200
200–2,000
More than 2,000

By sending this, you agree that we may contact you about your inquiry. We do not add you to a mailing list.

Prefer to talk it through first? Book a design review →

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