Wonderful Tips NO.31~ NO. 40

Principle 31. Porous materials

Example : Microwave steamer

Example : Ceramic or brick absorbent coaster

1. Make an object porous or add porous elements (inserts, coatings, etc.).
2. If an object is already porous, use the pores to introduce a useful substance or function.


Principle 32. Color changes

Example : Transparent pot

Example : 7 days Pill Medicines Box: easy to identify with color

1. Change the color of an object or its external environment.
2. Change the transparency of an object or its external environment.


Principle 33. Homogeneity

Example : Packaging candy with edible glutinous rice paper

1. Make objects interacting with a given object of the same material
– Make the container out of the same material as the contents, to reduce chemical reactions.


Principle 34. Discarding and recovering

Example : Pencil lead refills 

1. Make portions of an object that have fulfilled their functions go away (discard by dissolving, evaporating, etc.) or modify these directly during operation.
2. Conversely, restore consumable parts of an object directly in operation.



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Principle 35. Parameter changes
(Change the three-state, temperature, pressure, length, volume)

Example : Hairpin

Example : Dry ice

1. Change an object’s physical state (e.g. to a gas, liquid, or solid).
2. Change the concentration or consistency.
3. Change the degree of flexibility.
4. Change the temperature.


Principle 36. Phase transitions (Make a difference)

Example : Fragrant candles

Example : Liquid gas:

atmospheric pressure is the gas, when the pressure into the steel bucket, it becomes liquid

1. Use phenomena occurring during phase transitions.
2. Such as volume change, endothermic or exothermic


Principle 37. Thermal expansion

Example :Step on flat ping pong ball and than use hot water to restore

1. Use thermal expansion (or contraction) of materials.
2. If thermal expansion is being used, use multiple materials with different coefficients of thermal expansion.


Principle 38. Strong oxidants

Example : Missile (rocket) jet fuel

Example : Ozone anion air cleaner

1. Replace common air with oxygen-enriched air.
2. Replace enriched air with pure oxygen.
3. Expose air or oxygen to ionizing radiation.
4. Use ionized oxygen.
5. Replace ionized oxygen with ozone.


Principle 39. Inert atmosphere

Example : vacuum food packaging

Example : Anti-slip gloves are made of non-slip plastic particles

1. Replace a normal environment with an inert one.
2. Add neutral parts, or inert additives to an object.
3.Use a vacuum environment.


Principle 40. Composite materials

Example : Fire coat

Example : airplane

Change from uniform to composite materials.



source@ ChongQingDigitalScienceMuseum

TRIZ Wonderful Tips NO.21~ NO. 30

Principle 21. Skipping

Example : Washing vegetables and fruits machine

Use a high speed dentist’s drill to avoid heating tissue.


Principle 22. “Blessing in disguise” or “Turn Lemons into Lemonade”

Example : Anti thief Sandwich Bag

Use harmful factors (particularly, harmful effects of the environment or surroundings) to achieve a positive effect.


Principle 23. Feedback

Example : Press the clock on time, no need to turn on the lights to watch at night

Example : Inductive doorbell

1. Introduce feedback to improve a process or action.
– Automatic volume control in audio circuits

2. If feedback is already used, change its magnitude or influence
– Change a management measure from budget variance to customer satisfaction.


Principle 24. ‘Intermediary’

Example : Kitchen anti-fouling wall stickers

Example : Edible capsules

1. Use an intermediary carrier article or intermediary process.
2. Merge one object temporarily with another (which can be easily removed)


Principle 25. Self-service

Example : Standing umbrella

Example : Solar shaking head doll

1. Make an object serve itself by performing auxiliary helpful functions
2. Use waste resources, energy, or substances.


Principle 26. Copying

Example : Model house

Example : Boyfriend pillow

1. Instead of an unavailable, expensive, fragile object, use simpler and inexpensive copies.
2. Replace an object, or process with optical copies.
3. If visible optical copies are already used, move to infrared or ultraviolet copies

Have you read?

TRIZ – A Powerful Methodology for Creative Problem Solving

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Principle 27. Cheap short-living objects

Example : Disposable light raincoat

 Example : Disposable gloves

Replace an inexpensive object with a multiple of inexpensive objects, comprising certain qualities (such as service life, for instance).


Principle 28. Mechanics substitution

Example : Touch and Go

 Example : PH test paper

1. Replace a mechanical means with a sensory (optical, acoustic, taste or smell) means.
2. Use electric, magnetic and electromagnetic fields to interact with the object.


Principle 29. Pneumatic and hydraulics

Example : Water cushion

Example : Inflatable hangers

Use gas and liquid parts of an object instead of solid parts (e.g. inflatable, filled with liquids, air cushion, hydro static, hydro-reactive)


Principle 30. Flexible shells and thin films

Example : plastic wrap

Example : Contact lenses

1. Use flexible shells and thin films instead of three dimensional structures
2. Isolate the object from the external environment using flexible shells and thin films.


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source@ ChongQingDigitalScienceMuseum

TRIZ – A Powerful Methodology for Creative Problem Solving

Projects of all kinds frequently reach a point where as much analysis as possible has been carried out, but the way forward is still unclear. Progress seems blocked, and if the project team is to move forward, it must develop creative solutions to the problems it faces.

You’ll already know about techniques such as brainstorming, which can help with this sort of situation. However, this type of approach, which depends on intuition and the knowledge of the members of the team, tends to have unpredictable and unrepeatable results. What’s more, a huge range of possible solutions can be missed, simply because they’re outside the experience of the project team.

TRIZ is a problem solving methodology based on logic, data and research, not intuition. It draws on the past knowledge and ingenuity of many thousands of engineers to accelerate the project team’s ability to solve problems creatively. As such, TRIZ brings repeatability, predictability, and reliability to the problem-solving process with its structured and algorithmic approach.

About TRIZ

“TRIZ” is the (Russian) acronym for the “Theory of Inventive Problem Solving.” G.S. Altshuller and his colleagues in the former USSR developed the method between 1946 and 1985. TRIZ is an international science of creativity that relies on the study of the patterns of problems and solutions, not on the spontaneous and intuitive creativity of individuals or groups. More than three million patents have been analyzed to discover the patterns that predict breakthrough solutions to problems, and these have been codified within TRIZ.

TRIZ is spreading into corporate use across several parallel paths – it is increasingly common in Six Sigma processes, in project management and risk management systems, and in organizational innovation initiatives.

Generalized Solutions

TRIZ research began with the hypothesis that there are universal principles of creativity that are the basis for creative innovations, and that advance technology. The idea was that if these principles could be identified and codified, they could be taught to people to make the process of creativity more predictable. The short version of this is:

Somebody someplace has already solved this problem (or one very similar to it.) Today, creativity involves finding that solution and adapting it to this particular problem.

The three primary findings of the last 65 years of research are as follows:

  1. Problems and solutions are repeated across industries and sciences. By classifying the “contradictions” (see later) in each problem, you can predict good creative solutions to that problem.
  2. Patterns of technical evolution tend to be repeated across industries and sciences.
  3. Creative innovations often use scientific effects outside the field where they were developed.

Much of the practice of TRIZ consists of learning these repeating patterns of problems-solutions, patterns of technical evolution and methods of using scientific effects, and then applying the general TRIZ patterns to the specific situation that confronts the developer. Figure 1, below, describes this process graphically.

TRIZ Method Diagram

Here, you take the specific problem you face, and generalize it to one of the TRIZ general problems. From the TRIZ general problems, you identify the TRIZ solutions to those general problems, and then see how these can be applied to the specific problem you face.


A powerful demonstration of this method was seen in the pharmaceutical industry. Following the flow of Figure 1, the specific problem was as follows: an important process needed cell walls to be broken down in bacteria cells so that hormones inside the cells could be harvested. A mechanical method for breaking the cell walls had been in use at a moderate scale for some time, but the yield was only 80%, and was variable. Higher yields and a scaleable solution were needed.

The TRIZ general problem at the highest level is to find a way to produce the product with no waste, at 100% yield, with no added complexity. One of the patterns of evolution of technology that TRIZ identifies is that energy (fields) replaces objects (mechanical devices). For example, consider using a laser instead of a scalpel for eye surgery. In this case, ultrasound could be used to break the cell walls, or an enzyme could be used to “eat” it (chemical energy). This may seem very general, but it led the pharmaceutical researchers to analyze all the resources available in the problem (the cells, the cell walls, the fluid they are in, the motion of the fluid, the processing facility, etc.) and to conclude that three possible solutions had a good potential for solving their problem:

  1. The cell walls could be broken by sound waves (from the pattern of evolution of replacing mechanical means by fields).
  2. The cell walls could be broken by shearing, as they pass through the processing facility (using the resources of the existing system in a different way).
  3. An enzyme in the fluid could “eat” the cell walls and release the contents at the desired time.

All three methods have been tested successfully. The least expensive, highest yield method was soon put in production.

Join the TRIZ LEVEL 1 WORKSHOP to experience hands on to handle contradiction problem. 

Eliminating Contradictions

Another of the fundamental concepts behind TRIZ is that at the root of many problems is a fundamental contradiction that causes it (we’ll give examples below.) In many cases, a reliable way of solving a problem is to eliminate these contradictions. TRIZ recognizes two categories of contradictions:

  1. Technical contradictions are classical engineering “trade-offs.” The desired state can’t be reached because something else in the system prevents it. In other words, when something gets better, something else automatically gets worse. Classical examples include:
    • The product gets stronger (good), but the weight increases (bad).
    • Service is customized to each customer (good), but the service delivery system gets complicated (bad).
    • Training is comprehensive (good), but keeps employees away from their assignments (bad).
  2. Physical contradictions, also called “inherent” contradictions, are situations in which an object or system suffers contradictory, opposite requirements. Everyday examples abound:
    • Software should be complex (to have many features), but should be simple (to be easy to learn).
    • Coffee should be hot for enjoyable drinking, but cold to prevent burning the customer.
    • Training should take a long time (to be thorough), but not take any time.


Dairy farm operators could no longer dry cow manure for use as fertilizer due to an increased cost of energy. They were faced with a technical contradiction between dry manure (good) and cost (bad). TRIZ led the operators to a drying method used for the concentration of fruit juice, which required no heat.

Some of the TRIZ Tools

The “General TRIZ Solutions” referred to in Figure 1 have been developed over the course of the 65 years of TRIZ research, and have been organized in many different ways. Some of these are analytic methods such as:

  • The Ideal Final Result and Ideality.
  • Functional Modeling, Analysis and Trimming.
  • Locating the Zones of Conflict. (This is more familiar to Six Sigma problem solvers as “Root Cause Analysis.”)

Some are more prescriptive such as:

  • The 40 Inventive Principles of Problem Solving.
  • The Separation Principles.
  • Laws of Technical Evolution and Technology Forecasting.
  • 76 Standard Solutions.

In the course of solving any one technical problem, one tool or many can be used.

One of these tools, “The 40 Principles of Problem Solving” is the most accessible “tool” of TRIZ.

The 40 Principles of Problem Solving  Click here to download example for 40 principles. 

These 40 Principles are the ones that were found to repeat across many fields, as solutions to many general contradictions, which are at the heart of many problems. A list of all 40 Principles of Problem Solving can be found at http://www.triz-journal.com/archives/1997/07/b/index.html.

Here are just a few of the Principles and examples of how they could have been used to create products that were once new and innovative:

Principle Solution
Segmentation (Divide an object into independent parts) Individually wrapped cheese slices
Local quality (Provide different packaging for different uses) “Adult” editions of Harry Potter books
Universality (make an object perform multiple functions) Chocolate spread sold in glasses (with a lid) that can be used for drinking afterwards
Nested Doll Store within store (coffee shops in bookstores)
Another dimension (Tilt or re-orient object) Squeezable ketchup bottles that sit on their lids