Aluminum and titanium are described along with their properties and common uses. Aluminum is a light, silvery metal that is abundant in nature and commonly used in electricity, transportation, construction and packaging. It can be recycled infinitely without loss of properties. Titanium is also described with its discovery, properties as a transition metal, and common uses in alloys, aerospace, surgery and other industries. Biochips and biosensors are also summarized, with biochips enabling simultaneous biochemical reactions for screening and detection, while biosensors combine a biological component with a transducer and detector for analytical purposes.

1. Aluminium
and titanium
Biosensors and biochips
Victoria Saura
María Cascales

2. A LUMINIUM
D ESCRIPTION
•I’ts a chemical element in the boron group
•Its symbol: Al
•Its atomic number: 13
•It’s a silvery white, soft, ductile metal.
•Instead, it’s found combined in over 270 different minerals
•The chief ore of aluminium is bauxite

3. H ISTORY
A LUMINIUM
•Ancient Greeks and Romans used aluminium salts as:
– dyeing mordants
– astringents for dressing wounds
•The metal was first produced in 1825
• Discovered by H. C. Oersted
P ROPERTIES
•It is a very abundant element in the nature
•It is a light metal under point of merger
•His color is white and reflects well the electromagnetic
radiation
•Good electrical and thermal driver

4. U SES
A LUMINIUM
The uses that aluminium gives to nowadays are
MULTIPLE and we can divide them by sectors:
•Electricity and communication
•Transport
•Building and construction
•Packings
R ECYCLING
•It takes between 200 and 500 years to deteriorate
•Any product of aluminium can be recycled infinite times
without losing his properties
•the material can be re-used

5. H ISTORY
T ITANIUM
•Titanium was discovered included in a minera Great
Britain by William Gregor
•He found black sand by a stream
•He noticed the sand was attracted by a magnet
D ESCRIPTION
•It is a metal of transition
•It has a silver greyish color
•It forms alloys with other elements to
improve the mechanical presentations
•It has a small thermal and electrical
conductivity

6. T ITANIUM
P ROPERTIES
•Titanium is not free in the nature
•It has a density of 4507 kg/m3
•Point of merger of 1675 °C
•It is paramagnetic
•Lighter than steel

7. T ITANIUM
U SES
The two most useful properties of the metal are corrosion
resistance and the highest strength-to-density.
•Metallic alloys
•Aeronautical and aerospace industry
•In surgery
•Heat interchangers in the desalination plants
•In metallurgy
R ECYCLING
•The special steels can be recycled in junk yards or
authorized residues managers

8. B IOCHIPS
•They’re essentially miniaturized laboratories
•They can perform simultaneous biochemical reactions
•Biochips enable researchers to :
‒ screen large numbers of biological analytest
‒ detection of bioterrorism agents.
B IOSENSORS
•It’s an analytical device
•It combines a biological component with a physicochemical
component
•It consists of three parts:
– The biological sensor
– The transducer
– The detector