Peltier heater/cooler

In another report, PCR and subsequent CGE separation were integrated on a glass microchip (see Figure 9.1). PCR of X phage DNA was conducted in a sample reservoir with thermal cycling by a Peltier heater/cooler. Subsequent CGE separation was conducted immediately after PCR because the PCR reservoir led to the CE channel. In addition, an on-chip DNA pre-concentration device was included. This reduced the analysis time to 20 min (by decreasing the number of thermal cycles required to 10 cycles), and the starting DNA copy number to 15 (0.3 pM) [925],... 

C/s Resistive heater plus Peltier heater/cooler 998... 

Fig. 13 Ploymerare chain reactor system on a chip reported by Ramsey et al. (A) Layout of chip. (B) On-chip Peltier heater/cooler for thermal cycling of PCR process. (From Ref...

The acquisition of the FTIR polarization spectra is performed by using the dedicated computer of the spectrometer, which is synchronized with the different devices. The laser beam passes through the shutter and the filter wheel and is directed via two mirrors onto the film sample, which is moimted on the Peltier heater/cooler arrangement. This set-up was used to follow the photo-induced anisotropy during and after irradiation as a function of time and temperature, as well as its thermal stability during erasing cycles. Time-resolved spectra with a resolution of 4 cm were taken with radiation polarized alternately parallel and... 

Figure 11.1 (a) Scheme of an isoperibol titration calorimetry apparatus A Dewar vessel B lid C stirrer D electrical resistance E thermistor F titrant delivery tube G O-ring seal, (b) Vessel for isothermal operation A stainless-steel, platinum, or tantalum cup B water-tight stainless steel container C heater D Peltier thermoelectric cooler E O-ring seal F heater and cooler leads. Adapted from [211],... 

A tube furnace or muffle furnace heated by coiled W wires, can easily attain 1200°C. Above that, an induction furnace must be used. For small samples, a Peltier-effect heater/cooler can be used. 

The diagram below (left) shows a device formed by a saies of three materials A, B, and C for transferring heat from one side to another, called Peltier effect converter or Peltier cooler/heater. The metal plates made of material C ensure a good mechanical behavior and a good contact with external heat sources/sinks and with the materials A and B, while allowing optimal thermal and electrical conduction. Between these plates, three in number, are the materials A and B to form two sequences of thermocouples ACC and CBC in series (from the electrical circuit viewpoint), each of these pairs using two... 

For each injection, the energy necessary to maintain isothermal condition is recorded as Aq over the injection step. This quantity of energy can be either from an electrical heater or a Peltier cooler. It is assumed that for the addition of small volumes of material Av the experimental conditions ate close to those in the definition of the partial molar excess enthalpy H of component 1. To a good approximation ... 

Fig. 14.4 Schematic representation of a reaction vessel [72] of isothermal compensation flow calorimeter, a inlets b outlet c electrical leads d Peltier cooler e controlled heater / isothermal cylinder g calibration heater h inside tube...

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