Jens Ducrée and Roland Zengerle

Praxis beispie l: Ausa rbeitu ngsphaA usarbe itung d er Stan dard-Z

2.1. General Characteristics

Formal Issues

h Vorlesungstermin fest

h SeminarTeilnahme möglichVorträge der Diplomanden & Mitarbeiter des LehrstuhlsScheinerwerb durch Vortrag

- Begrenzte Anzahl von Terminen noch frei

h Exkursion zu Roche am 18.11.

h Skript unter

www.myFluidix.com

Jens Ducrée and Roland Zengerle

Praxis beispie l: Ausa rbeitu ngsphaA usarbe itung d er Stan dard-Z

2.1. General Characteristics

Dr. Jens Ducrée

ducree @ imtek.de

h Born 1968h 1996: Diploma in Physics

Heidelberg (D), Eindhoven (NL) and Münster (D)

h 1999: PhD in Experimental PhysicsSemiclassical fluid modeling

- „Hollow Atom Dynamics at Surfaces“In Münster (D) and Kansas State (USA)

h Since 1999Scientific assistant at IMTEKGroup leader

- Lab-on-a-Chip systems- Bio-Disk project- Biofuel cells

EU project coordinator- FlowMap – Microfluidics Roadmap

Leading author of book- “Microfluidics” (published by Springer)

Jens Ducrée and Roland Zengerle

Praxis beispie l: Ausa rbeitu ngsphaA usarbe itung d er Stan dard-Z

2.1. General Characteristics

Contents

1. Introduction

2. Fluids3. Physics of Microfluidic

Systems

4. Microfabrication Technologies

5. Flow Control

6. Micropumps

7. Sensors

8. Ink-Jet Technology

9. Liquid Handling

10.Microarrays

11.Microreactors

12.Analytical Chips

13.Particle-Laden Fluids

a. Measurement Techniques

b. Fundamentals of Biotechnology

c. High-Throughput Screening

Jens Ducrée and Roland Zengerle

Praxis beispie l: Ausa rbeitu ngsphaA usarbe itung d er Stan dard-Z

2.1. General Characteristics

2. Fluids

1. General Characteristics2. Dispersions

3. Thermodynamics

4. Transport Phenomena

5. Solutions

6. Surface Tension

7. Electrical Properties

8. Optical Properties

9. Biological Fluids

Jens Ducrée and Roland Zengerle

Praxis beispie l: Ausa rbeitu ngsphaA usarbe itung d er Stan dard-Z

2.1. General Characteristics

2.1. General Characteristics

1. The Three States of Matter2. Mass, Moles and Density

Jens Ducrée and Roland Zengerle

Praxis beispie l: Ausa rbeitu ngsphaA usarbe itung d er Stan dard-Z

2.1. General Characteristics

2.1.1. Liquids and Gases

h Three States of MatterSolidLiquidGaseous

h DifferencesReaction to external forces

- Stability of external shapeStrength of intermolecular forcesInternal Energy

h FluidsLiquids Gases

Jens Ducrée and Roland Zengerle

Praxis beispie l: Ausa rbeitu ngsphaA usarbe itung d er Stan dard-Z

2.1. General Characteristics

2.1.1. Liquids and Gases

h Three States of MatterSolid

- Relatively fixed molecular structure- Strong cohesive forces between molecules over long

distances- Reaction to external forces: restoring of external

shape- Lowest internal energy - Crystalline state: atoms arranged periodically (silicon,

metals, ...)- Non-crystalline state: atoms not organized within

regular lattice (glass, plastics, ...)- Quasi-crystalline: patterns not repeating at regular

intervals (alloys)

LiquidGaseous

Jens Ducrée and Roland Zengerle

Praxis beispie l: Ausa rbeitu ngsphaA usarbe itung d er Stan dard-Z

2.1. General Characteristics

2.1.1. Liquids and Gases

h Three States of MatterSolidLiquidGaseous

- No defined shape- Occupying whole volume- Reaction to pressure gradient transport of particles- Steady state: equal pressure within whole volume

- Forces between molecules very low or negligible (e.g. ideal gas)

- Random motion and occasional collisions with other molecules

Jens Ducrée and Roland Zengerle

Praxis beispie l: Ausa rbeitu ngsphaA usarbe itung d er Stan dard-Z

2.1. General Characteristics

2.1.1. Liquids and Gases

h Three States of MatterSolidLiquid

- Intermediate state compared to solid and gasCohesive forces between molecules compared to solidsMolecular alignment on molecular length scalesNo temporally fixed molecular positions

- Higher kinetic energy compared to solids

- Reaction to pressure gradient(Convective) transport of particles

- Shape defined by the minimum of potential energySurface tensionInterfacial forces with solids and gases Spherical surface in absence of gravity

Gaseous

Jens Ducrée and Roland Zengerle

Praxis beispie l: Ausa rbeitu ngsphaA usarbe itung d er Stan dard-Z

2.1. General Characteristics

2.1. General Characteristics

1. The Three States of Matter

2. Mass, Moles and Density

Jens Ducrée and Roland Zengerle

Praxis beispie l: Ausa rbeitu ngsphaA usarbe itung d er Stan dard-Z

2.1. General Characteristics

2.1.2. Mass, Moles and Density

h Mass m of body

Number of molecules NMolecular mass M

h Total number N of molecules in given sample

Avogadro‘s constant NANumber of moles n

h Particle density

Jens Ducrée and Roland Zengerle

Praxis beispie l: Ausa rbeitu ngsphaA usarbe itung d er Stan dard-Z

2.1. General Characteristics

2.1.2. Densities

h Volume per mole

h (Mass) density

Molar mass